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Eleuteri M, Desantis J, Cruciani G, Germani R, Goracci L. Use of ionic liquids in amidation reactions for proteolysis targeting chimera synthesis. Org Biomol Chem 2024; 22:3477-3489. [PMID: 38602033 DOI: 10.1039/d4ob00304g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/12/2024]
Abstract
Selective degradation of disease-causing proteins using proteolysis targeting chimeras (PROTACs) has gained great attention, thanks to its several advantages over traditional therapeutic modalities. Despite the advances made so far, the structural chemical complexity of PROTACs poses challenges in their synthetic approaches. PROTACs are typically prepared through a convergent approach, first synthesizing two fragments separately (target protein and E3 ligase ligands) and then coupling them to produce a fully assembled PROTAC. The amidation reaction represents the most common coupling exploited in PROTACs synthesis. Unfortunately, the overall isolated yields of such synthetic procedures are usually low due to one or more purification steps to obtain the final PROTAC with acceptable purity. In this work, we focused our attention on the optimization of the final amidation step for the synthesis of an anti-SARS-CoV-2 PROTAC by investigating different amidation coupling reagents and a range of alternative solvents, including ionic liquids (ILs). Among the ILs screened, [OMIM][ClO4] emerged as a successful replacement for the commonly used DMF within the HATU-mediated amidation reaction, thus allowing the synthesis of the target PROTAC under mild and sustainable conditions in very high isolated yields. With the optimised conditions in hand, we explored the scalability of the synthetic approach and the substrate scope of the reaction by employing different E3 ligase ligand (VHL and CRBN)-based intermediates containing linkers of different lengths and compositions or by using different target protein ligands. Interestingly, in all cases, we obtained high isolated yields and complete conversion in short reaction times.
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Affiliation(s)
- Michela Eleuteri
- Department of Chemistry, Biology, and Biotechnology, University of Perugia, Italy.
| | - Jenny Desantis
- Department of Chemistry, Biology, and Biotechnology, University of Perugia, Italy.
| | - Gabriele Cruciani
- Department of Chemistry, Biology, and Biotechnology, University of Perugia, Italy.
| | - Raimondo Germani
- Department of Chemistry, Biology, and Biotechnology, University of Perugia, Italy.
| | - Laura Goracci
- Department of Chemistry, Biology, and Biotechnology, University of Perugia, Italy.
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2
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Barreira A, Santos AFM, Dionísio M, Jesus AR, Duarte ARC, Petrovski Ž, Paninho AB, Ventura MG, Branco LC. Ionic Levothyroxine Formulations: Synthesis, Bioavailability, and Cytotoxicity Studies. Int J Mol Sci 2023; 24:8822. [PMID: 37240166 PMCID: PMC10218257 DOI: 10.3390/ijms24108822] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2023] [Revised: 04/28/2023] [Accepted: 05/08/2023] [Indexed: 05/28/2023] Open
Abstract
Thyroid diseases affect a considerable portion of the population, with hypothyroidism being one of the most commonly reported thyroid diseases. Levothyroxine (T4) is clinically used to treat hypothyroidism and suppress thyroid stimulating hormone secretion in other thyroid diseases. In this work, an attempt to improve T4 solubility is made through the synthesis of ionic liquids (ILs) based on this drug. In this context, [Na][T4] was combined with choline [Ch]+ and 1-(2-hydroxyethyl)-3-methylimidazolium [C2OHMiM] + cations in order to prepare the desired T4-ILs. All compounds were characterized by NMR, ATR-FTIR, elemental analysis, and DSC, aiming to check their chemical structure, purities, and thermal properties. The serum, water, and PBS solubilities of the T4-ILs were compared to [Na][T4], as well as the permeability assays. It is important to note an improved adsorption capacity, in which no significant cytotoxicity was observed against L929 cells. [C2OHMiM][T4] seems to be a good alternative to the commercial levothyroxine sodium salt with promising bioavailability.
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Affiliation(s)
| | | | | | | | | | | | | | - Márcia G. Ventura
- LAQV-REQUIMTE, Department of Chemistry, NOVA School of Science and Technology, NOVA University of Lisbon, Campus de Caparica, 2829-516 Caparica, Portugal; (A.B.); (A.F.M.S.); (M.D.); (A.R.J.); (A.R.C.D.); (Ž.P.); (A.B.P.)
| | - Luis C. Branco
- LAQV-REQUIMTE, Department of Chemistry, NOVA School of Science and Technology, NOVA University of Lisbon, Campus de Caparica, 2829-516 Caparica, Portugal; (A.B.); (A.F.M.S.); (M.D.); (A.R.J.); (A.R.C.D.); (Ž.P.); (A.B.P.)
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3
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Carreira ARF, Veloso T, Schaeffer N, Pereira JL, Ventura SPM, Rizzi C, Sirieix Plénet J, Passos H, Coutinho JAP. Synthesis of Purine-Based Ionic Liquids and Their Applications. Molecules 2021; 26:6958. [PMID: 34834050 PMCID: PMC8620494 DOI: 10.3390/molecules26226958] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2021] [Revised: 11/15/2021] [Accepted: 11/15/2021] [Indexed: 11/18/2022] Open
Abstract
Bio-based ionic liquids (ILs) are being increasingly sought after, as they are more sustainable and eco-friendly. Purines are the most widely distributed, naturally occurring N-heterocycles, but their low water-solubility limits their application. In this work, four purines (theobromine, theophylline, xanthine, and uric acid) were combined with the cation tetrabutylammonium to synthesize bio-based ILs. The physico-chemical properties of the purine-based ILs were characterized, including their melting and decomposition temperatures and water-solubility. The ecotoxicity against the microalgae Raphidocelis subcapitata was also determined. The ILs show good thermal stability (>457 K) and an aqueous solubility enhancement ranging from 53- to 870-fold, in comparison to their respective purine percursors, unlocking new prospects for their application where aqueous solutions are demanded. The ecotoxicity of these ILs seems to be dominated by the cation, and it is similar to chloride-based IL, emphasizing that the use of natural anions does not necessarily translate to more benign ILs. The application of the novel ILs in the formation of aqueous biphasic systems (ABS), and as solubility enhancers, was also evaluated. The ILs were able to form ABS with sodium sulfate and tripotassium citrate salts. The development of thermoresponsive ABS, using sodium sulfate as a salting-out agent, was accomplished, with the ILs having different thermosensitivities. In addition, the purine-based ILs acted as solubility enhancers of ferulic acid in aqueous solution.
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Affiliation(s)
- Ana R. F. Carreira
- Department of Chemistry, CICECO-Aveiro Institute of Materials, University of Aveiro, 3810-193 Aveiro, Portugal; (A.R.F.C.); (T.V.); (N.S.); (S.P.M.V.); (J.A.P.C.)
| | - Telma Veloso
- Department of Chemistry, CICECO-Aveiro Institute of Materials, University of Aveiro, 3810-193 Aveiro, Portugal; (A.R.F.C.); (T.V.); (N.S.); (S.P.M.V.); (J.A.P.C.)
- Department of Biology & CESAM, University of Aveiro, 3810-193 Aveiro, Portugal;
| | - Nicolas Schaeffer
- Department of Chemistry, CICECO-Aveiro Institute of Materials, University of Aveiro, 3810-193 Aveiro, Portugal; (A.R.F.C.); (T.V.); (N.S.); (S.P.M.V.); (J.A.P.C.)
| | - Joana L. Pereira
- Department of Biology & CESAM, University of Aveiro, 3810-193 Aveiro, Portugal;
| | - Sónia P. M. Ventura
- Department of Chemistry, CICECO-Aveiro Institute of Materials, University of Aveiro, 3810-193 Aveiro, Portugal; (A.R.F.C.); (T.V.); (N.S.); (S.P.M.V.); (J.A.P.C.)
| | - Cécile Rizzi
- Laboratoire Physico-Chimie des Électrolytes et Nano-Systèmes Interfaciaux, PHENIX, CNRS, Sorbonne Université, F-75005 Paris, France; (C.R.); (J.S.P.)
| | - Juliette Sirieix Plénet
- Laboratoire Physico-Chimie des Électrolytes et Nano-Systèmes Interfaciaux, PHENIX, CNRS, Sorbonne Université, F-75005 Paris, France; (C.R.); (J.S.P.)
| | - Helena Passos
- Department of Chemistry, CICECO-Aveiro Institute of Materials, University of Aveiro, 3810-193 Aveiro, Portugal; (A.R.F.C.); (T.V.); (N.S.); (S.P.M.V.); (J.A.P.C.)
| | - João A. P. Coutinho
- Department of Chemistry, CICECO-Aveiro Institute of Materials, University of Aveiro, 3810-193 Aveiro, Portugal; (A.R.F.C.); (T.V.); (N.S.); (S.P.M.V.); (J.A.P.C.)
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4
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Abstract
Exploring efficient and robust antibacterial materials is crucially important for human health and ecological security. Compared with intrinsically antibacterial materials, materials modified with antibacterial agents either by chemical or physical modification can simultaneously maintain basic functions and antibacterial properties. In particular, physical modification with antiseptic sprays is quite suitable for large-size objects in our daily life but restricted by high volatility of the antibacterial agents or poor adhesion strength between the antibacterial agents and the targeted objects. In this paper, we report a poly(ionic liquid) (PIL-Cn)-based efficient and robust antiseptic spray that exhibits long-term antibacterial properties against both Gram-positive and Gram-negative bacteria on diverse substrates, including glass, PE, and cotton. It is believed that this work will provide an alternative for current antiseptic sprays for usage in our daily life and hospitals.
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Affiliation(s)
- Xi Liu
- School of Chemistry and Chemical Engineering, Yantai University, Yantai 264005, P. R. China
- CAS Key Laboratory of Bio-inspired Materials and Interfacial Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Li Chang
- Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education, School of Chemistry, Beihang University, Beijing 100191, P. R. China
| | - Liying Peng
- Beijing Laboratory of Biomedical Materials, Department of Geriatric Dentistry, Peking University School and Hospital of Stomatology, Beijing 100081, P. R. China
| | - Rushui Bai
- Beijing Laboratory of Biomedical Materials, Department of Geriatric Dentistry, Peking University School and Hospital of Stomatology, Beijing 100081, P. R. China
| | - Yan Wei
- Beijing Laboratory of Biomedical Materials, Department of Geriatric Dentistry, Peking University School and Hospital of Stomatology, Beijing 100081, P. R. China
| | - Chuao Ma
- College of Chemistry, Jilin University, Changchun 130012, P. R. China
| | - Hongliang Liu
- School of Chemistry and Chemical Engineering, Yantai University, Yantai 264005, P. R. China
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5
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Abstract
Electronic tattoos as an emerging epidermal electronic are alluring in the field of wearable electronics for their lightweight and noninvasive properties. However, the combination of flexibility, skin biocompatibility, adhesion, repairability, and erasability remains a challenge for fabricating electronic tattoos. Hence, a dynamic ionic liquid is prepared which is ideally suited for making an electronic tattoo with these challenging features at the same time. Such an intrinsically flexible electronic tattoo can be firmly attached to human skin with negligible irritation. More importantly, the existence of dynamic covalent chemistry provides the electronic tattoo with healing and erasable abilities under mild redox conditions. Owing to the high ionic conductivity of ionic liquids, the electronic tattoo exhibits excellent sensing performance in response to the temperature variation and tensile strain, which can intelligently monitor body temperature, pulse, and movement. As an extension of the application, a specially designed quadrilateral electronic tattoo can sense and distinguish multiple signals simultaneously. This concept of electronic tattoo based on the dynamic ionic liquid shows great potentials in the applications of intelligent wearable electronics.
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Affiliation(s)
- Zhiwu Chen
- Department of Chemistry, Renmin University of China, Beijing 100872, China
| | - Naiwei Gao
- Department of Chemistry, Renmin University of China, Beijing 100872, China
| | - Yanji Chu
- Department of Chemistry, Renmin University of China, Beijing 100872, China
| | - Yonglin He
- Department of Chemistry, Renmin University of China, Beijing 100872, China
| | - Yapei Wang
- Department of Chemistry, Renmin University of China, Beijing 100872, China
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6
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Fontana F, Carminati G, Bertolotti B, Mussini PR, Arnaboldi S, Grecchi S, Cirilli R, Micheli L, Rizzo S. Helicity: A Non-Conventional Stereogenic Element for Designing Inherently Chiral Ionic Liquids for Electrochemical Enantiodifferentiation. Molecules 2021; 26:molecules26020311. [PMID: 33435346 PMCID: PMC7828060 DOI: 10.3390/molecules26020311] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Revised: 12/31/2020] [Accepted: 01/03/2021] [Indexed: 11/16/2022] Open
Abstract
Configurationally stable 5-aza[6]helicene (1) was envisaged as a promising scaffold for non-conventional ionic liquids (IL)s. It was prepared, purified, and separated into enantiomers by preparative HPLC on a chiral stationary phase. Enantiomerically pure quaternary salts of 1 with appropriate counterions were prepared and fully characterized. N-octyl-5-aza[6]helicenium bis triflimidate (2) was tested in very small quantities as a selector in achiral IL media to perform preliminary electrochemical enantiodifferentiation experiments on the antipodes of two different chiral probes. The new organic salt exhibited outstanding enantioselection performance with respect to these probes, thus opening the way to applications in the enantioselective electroanalysis of relevant bioactive molecules.
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Affiliation(s)
- Francesca Fontana
- Dipartimento di Ingegneria e Scienze Applicate, Università di Bergamo, Viale Marconi 5, 24044 Dalmine, Italy; (G.C.); (B.B.)
- CSGI Bergamo R.U., Viale Marconi 5, 24044 Dalmine, Italy
- Correspondence: (F.F.); (S.R.)
| | - Greta Carminati
- Dipartimento di Ingegneria e Scienze Applicate, Università di Bergamo, Viale Marconi 5, 24044 Dalmine, Italy; (G.C.); (B.B.)
| | - Benedetta Bertolotti
- Dipartimento di Ingegneria e Scienze Applicate, Università di Bergamo, Viale Marconi 5, 24044 Dalmine, Italy; (G.C.); (B.B.)
| | - Patrizia Romana Mussini
- Dipartimento di Chimica, Università Degli Studi di Milano, Via Golgi 19, 20133 Milano, Italy; (P.R.M.); (S.A.); (S.G.)
| | - Serena Arnaboldi
- Dipartimento di Chimica, Università Degli Studi di Milano, Via Golgi 19, 20133 Milano, Italy; (P.R.M.); (S.A.); (S.G.)
| | - Sara Grecchi
- Dipartimento di Chimica, Università Degli Studi di Milano, Via Golgi 19, 20133 Milano, Italy; (P.R.M.); (S.A.); (S.G.)
| | - Roberto Cirilli
- Centro Nazionale per Il Controllo e la Valutazione dei Farmaci, Istituto Superiore di Sanità, Viale Regina Elena 299, 00161 Rome, Italy;
| | - Laura Micheli
- Dipartimento di Scienze e Tecnologie Chimiche, Università Degli Studi di Roma Tor Vergata, Via della Ricerca Scientifica, 1, 00133 Roma, Italy;
| | - Simona Rizzo
- CNR Istituto di Scienze e Tecnologie Chimiche “Giulio Natta”, Via C. Golgi 19, 20133 Milano, Italy
- Correspondence: (F.F.); (S.R.)
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7
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Semenyuta IV, Trush MM, Kovalishyn VV, Rogalsky SP, Hodyna DM, Karpov P, Xia Z, Tetko IV, Metelytsia LO. Structure-Activity Relationship Modeling and Experimental Validation of the Imidazolium and Pyridinium Based Ionic Liquids as Potential Antibacterials of MDR Acinetobacter Baumannii and Staphylococcus Aureus. Int J Mol Sci 2021; 22:ijms22020563. [PMID: 33429999 PMCID: PMC7827895 DOI: 10.3390/ijms22020563] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2020] [Revised: 12/29/2020] [Accepted: 01/05/2021] [Indexed: 12/31/2022] Open
Abstract
Online Chemical Modeling Environment (OCHEM) was used for QSAR analysis of a set of ionic liquids (ILs) tested against multi-drug resistant (MDR) clinical isolate Acinetobacter baumannii and Staphylococcus aureus strains. The predictive accuracy of regression models has coefficient of determination q2 = 0.66 - 0.79 with cross-validation and independent test sets. The models were used to screen a virtual chemical library of ILs, which was designed with targeted activity against MDR Acinetobacter baumannii and Staphylococcus aureus strains. Seven most promising ILs were selected, synthesized, and tested. Three ILs showed high activity against both these MDR clinical isolates.
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Affiliation(s)
- Ivan V. Semenyuta
- V.P. Kukhar Institute of Bioorganic Chemistry and Petrochemistry, National Academy of Science of Ukraine, 1 Murmanska Street, 02660 Kyiv, Ukraine; (I.V.S.); (M.M.T.); (V.V.K.); (S.P.R.); (D.M.H.); (L.O.M.)
| | - Maria M. Trush
- V.P. Kukhar Institute of Bioorganic Chemistry and Petrochemistry, National Academy of Science of Ukraine, 1 Murmanska Street, 02660 Kyiv, Ukraine; (I.V.S.); (M.M.T.); (V.V.K.); (S.P.R.); (D.M.H.); (L.O.M.)
| | - Vasyl V. Kovalishyn
- V.P. Kukhar Institute of Bioorganic Chemistry and Petrochemistry, National Academy of Science of Ukraine, 1 Murmanska Street, 02660 Kyiv, Ukraine; (I.V.S.); (M.M.T.); (V.V.K.); (S.P.R.); (D.M.H.); (L.O.M.)
| | - Sergiy P. Rogalsky
- V.P. Kukhar Institute of Bioorganic Chemistry and Petrochemistry, National Academy of Science of Ukraine, 1 Murmanska Street, 02660 Kyiv, Ukraine; (I.V.S.); (M.M.T.); (V.V.K.); (S.P.R.); (D.M.H.); (L.O.M.)
| | - Diana M. Hodyna
- V.P. Kukhar Institute of Bioorganic Chemistry and Petrochemistry, National Academy of Science of Ukraine, 1 Murmanska Street, 02660 Kyiv, Ukraine; (I.V.S.); (M.M.T.); (V.V.K.); (S.P.R.); (D.M.H.); (L.O.M.)
| | - Pavel Karpov
- Institute of Structural Biology, Helmholtz Zentrum München—German Research Center for Environmental Health (GmbH), Ingolstädter Landstraße 1, D-85764 Neuherberg, Germany; (P.K.); (Z.X.)
| | - Zhonghua Xia
- Institute of Structural Biology, Helmholtz Zentrum München—German Research Center for Environmental Health (GmbH), Ingolstädter Landstraße 1, D-85764 Neuherberg, Germany; (P.K.); (Z.X.)
| | - Igor V. Tetko
- Institute of Structural Biology, Helmholtz Zentrum München—German Research Center for Environmental Health (GmbH), Ingolstädter Landstraße 1, D-85764 Neuherberg, Germany; (P.K.); (Z.X.)
- BIGCHEM GmbH, Unterschleißheim, Valerystr. 49, D-85716 Neuherberg, Germany
- Correspondence: ; Tel.: +49-89-3187-3575
| | - Larisa O. Metelytsia
- V.P. Kukhar Institute of Bioorganic Chemistry and Petrochemistry, National Academy of Science of Ukraine, 1 Murmanska Street, 02660 Kyiv, Ukraine; (I.V.S.); (M.M.T.); (V.V.K.); (S.P.R.); (D.M.H.); (L.O.M.)
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8
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Fojtášková J, Koutník I, Vráblová M, Sezimová H, Maxa M, Obalová L, Pánek P. Antibacterial, Antifungal and Ecotoxic Effects of Ammonium and Imidazolium Ionic Liquids Synthesized in Microwaves. Molecules 2020; 25:molecules25215181. [PMID: 33172179 PMCID: PMC7664430 DOI: 10.3390/molecules25215181] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2020] [Revised: 10/27/2020] [Accepted: 11/04/2020] [Indexed: 11/16/2022] Open
Abstract
Ionic liquids are increasingly used for their superior properties. Four water-immiscible ionic liquids (butyltriethylammonium bis(trifluoromethylsulfonyl)imide, octyltriethylammonium bis(trifluoromethylsulfonyl)imide, dodecyltriethylammonium bis(trifluoromethylsulfonyl)imide, butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide) and their water miscible precursors (bromides) were synthesized in a microwave reactor and by conventional heating. The best conditions for microwave-assisted synthesis concerning the yield and the purity of the product are proposed. The heating in the microwave reactor significantly shortened the reaction time. Biocide and ecotoxic effects of synthesized ionic liquids and their precursors were investigated. All tested compounds had at least a little effect on the growth or living of microorganisms (bacteria or mold). The precursor dodecyltriethylammonium bromide was found to be the strongest biocide, but posed a risk to the aquatic environment due to its relatively high EC50 value in the test with Vibrio fischeri. We assumed that apart from the alkyl chain length, the solubility in water, duration of action, or type of anion can influence the final biocide and ecotoxic effect.
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Affiliation(s)
- Jana Fojtášková
- Institute of Environmental Technology, VSB-Technical University of Ostrava, 17. listopadu 15, 708 00 Ostrava, Czech Republic; (J.F.); (I.K.); (L.O.); (P.P.)
- Faculty of Materials Science and Technology, VSB-Technical University of Ostrava, 17. listopadu 15, 708 00 Ostrava, Czech Republic
| | - Ivan Koutník
- Institute of Environmental Technology, VSB-Technical University of Ostrava, 17. listopadu 15, 708 00 Ostrava, Czech Republic; (J.F.); (I.K.); (L.O.); (P.P.)
- Faculty of Materials Science and Technology, VSB-Technical University of Ostrava, 17. listopadu 15, 708 00 Ostrava, Czech Republic
| | - Martina Vráblová
- Institute of Environmental Technology, VSB-Technical University of Ostrava, 17. listopadu 15, 708 00 Ostrava, Czech Republic; (J.F.); (I.K.); (L.O.); (P.P.)
- Correspondence:
| | - Hana Sezimová
- Department of Biology and Ecology, Faculty of Science, University of Ostrava, Chittussiho 10, 710 00 Ostrava, Czech Republic;
| | - Milan Maxa
- TECHEM CZ, Ltd., Ondříčkova 1300/48, 130 05 Praha 3, Czech Republic;
| | - Lucie Obalová
- Institute of Environmental Technology, VSB-Technical University of Ostrava, 17. listopadu 15, 708 00 Ostrava, Czech Republic; (J.F.); (I.K.); (L.O.); (P.P.)
| | - Petr Pánek
- Institute of Environmental Technology, VSB-Technical University of Ostrava, 17. listopadu 15, 708 00 Ostrava, Czech Republic; (J.F.); (I.K.); (L.O.); (P.P.)
- Faculty of Materials Science and Technology, VSB-Technical University of Ostrava, 17. listopadu 15, 708 00 Ostrava, Czech Republic
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9
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Wilms W, Woźniak-Karczewska M, Syguda A, Niemczak M, Ławniczak Ł, Pernak J, Rogers RD, Chrzanowski Ł. Herbicidal Ionic Liquids: A Promising Future for Old Herbicides? Review on Synthesis, Toxicity, Biodegradation, and Efficacy Studies. J Agric Food Chem 2020; 68:10456-10488. [PMID: 32786821 PMCID: PMC7530898 DOI: 10.1021/acs.jafc.0c02894] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2020] [Revised: 08/12/2020] [Accepted: 08/12/2020] [Indexed: 05/13/2023]
Abstract
The transformation of agrochemicals into herbicidal ionic liquids (HILs) has been suggested as a solution to problems associated with commercial forms of herbicides. The aim of this review was to summarize the latest progress in the field of HILs, including their synthesis as well as physicochemical and biological properties, and to address the areas that require further research in order to ensure their safe commercialization (e.g., data regarding biodegradability, toxicity, and environmental fate). The first part of the review provides an in-depth summary of the current state of knowledge regarding HILs, particularly the anions and cations used for their synthesis. The second part highlights the employed synthesis methods and elucidates their respective advantages and limitations. The third section is focused on the characterization of HILs with emphasis on the methods and factors that are significant in terms of their practical application. Subsequently, the issues associated with the biodegradation and toxic effects of HILs are discussed based on the relevant literature reports. All sections include comprehensively tabulated data in order to enable rapid comparison of utilized approaches. Finally, all the findings are critically analyzed in terms of crucial disadvantages (especially the lack of standardization), which allowed us to establish future recommendations and basic guidelines that are presented in the last section.
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Affiliation(s)
- Wiktoria Wilms
- Department
of Chemical Technology, Poznan University
of Technology, Poznan 60-965, Poland
| | | | - Anna Syguda
- Department
of Chemical Technology, Poznan University
of Technology, Poznan 60-965, Poland
| | - Michał Niemczak
- Department
of Chemical Technology, Poznan University
of Technology, Poznan 60-965, Poland
- Department
of Chemistry, The University of Alabama, Tuscaloosa, Alabama 35487, United States
| | - Łukasz Ławniczak
- Department
of Chemical Technology, Poznan University
of Technology, Poznan 60-965, Poland
| | - Juliusz Pernak
- Department
of Chemical Technology, Poznan University
of Technology, Poznan 60-965, Poland
| | - Robin D. Rogers
- 525
Solutions, Inc., PO Box 2206, Tuscaloosa, Alabama 35403, United States
- Department
of Chemistry, The University of Alabama, Tuscaloosa, Alabama 35487, United States
| | - Łukasz Chrzanowski
- Department
of Chemical Technology, Poznan University
of Technology, Poznan 60-965, Poland
- Department
of Chemistry, The University of Alabama, Tuscaloosa, Alabama 35487, United States
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10
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Gaida B, Brzęczek-Szafran A. Insights into the Properties and Potential Applications of Renewable Carbohydrate-Based Ionic Liquids: A Review. Molecules 2020; 25:E3285. [PMID: 32698359 PMCID: PMC7397332 DOI: 10.3390/molecules25143285] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Revised: 07/15/2020] [Accepted: 07/17/2020] [Indexed: 11/16/2022] Open
Abstract
Carbohydrate-derived ionic liquids have been explored as bio-alternatives to conventional ionic liquids for over a decade. Since their discovery, significant progress has been made regarding synthetic methods, understanding their environmental effect, and developing perspectives on their potential applications. This review discusses the relationships between the structural properties of carbohydrate ionic liquids and their thermal, toxicological, and biodegradability characteristics in terms of guiding future designs of sugar-rich systems for targeted applications. The synthetic strategies related to carbohydrate-based ionic liquids, the most recent relevant advances, and several perspectives for possible applications spanning catalysis, biomedicine, ecology, biomass, and energy conversion are presented herein.
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Affiliation(s)
| | - Alina Brzęczek-Szafran
- Department of Chemical Organic Technology and Petrochemistry, Silesian University of Technology, 44100 Gliwice, Poland;
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11
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Gao L, Lin X, Zheng A, Shuang E, Wang J, Chen X. Real-time monitoring of intracellular pH in live cells with fluorescent ionic liquid. Anal Chim Acta 2020; 1111:132-138. [PMID: 32312389 DOI: 10.1016/j.aca.2020.03.050] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2020] [Revised: 03/15/2020] [Accepted: 03/23/2020] [Indexed: 12/20/2022]
Abstract
Real-time monitoring of intracellular pH is of great significance due to its essential role in physiological and pathological processes. In present work, the ionic liquid (IL) N-methyl-6-hydroxyquinolinium bis(trifluoromethylsulfonyl) imide ([6MQc][NTf2]) is proposed as a fluorescence probe for the quantitative imaging of intracellular pH in response to external stimuli. The fluorescence of the IL [6MQc][NTf2] exhibits a sensitive response to pH variations, as the deprotonation of [6MQc][NTf2] generates the highly fluorescent zwitterionic product [6MQz]. pH fluctuations in the range of 6.0-7.5 can be accurately sensed by monitoring the fluorescence change at 555 nm. Moreover, this IL probe exhibits favorable biocompatibility, excellent anti-photobleaching properties, and high tolerance to ionic strength. Using the IL probe, real-time sensing of hypoxia- and drug-induced intracellular pH changes in MCF-7 cells is achieved.
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Affiliation(s)
- Lifang Gao
- Department of Chemistry, College of Sciences, Northeastern University, Box 332, Shenyang, 110819, China
| | - Xin Lin
- Department of Chemistry, College of Sciences, Northeastern University, Box 332, Shenyang, 110819, China
| | - Anqi Zheng
- Department of Chemistry, College of Sciences, Northeastern University, Box 332, Shenyang, 110819, China
| | - E Shuang
- Department of Chemistry, College of Sciences, Northeastern University, Box 332, Shenyang, 110819, China
| | - Jianhua Wang
- Department of Chemistry, College of Sciences, Northeastern University, Box 332, Shenyang, 110819, China
| | - Xuwei Chen
- Department of Chemistry, College of Sciences, Northeastern University, Box 332, Shenyang, 110819, China.
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12
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Akopyan A, Eseva E, Polikarpova P, Kedalo A, Vutolkina A, Glotov A. Deep Oxidative Desulfurization of Fuels in the Presence of Brönsted Acidic Polyoxometalate-Based Ionic Liquids. Molecules 2020; 25:E536. [PMID: 31991874 PMCID: PMC7037028 DOI: 10.3390/molecules25030536] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2019] [Revised: 01/19/2020] [Accepted: 01/24/2020] [Indexed: 11/16/2022] Open
Abstract
Polyoxometalate-based ionic liquid hybrid materials with a pyridinium cation, containing Brönsted acid sites, were synthesized and used as catalysts for the oxidation of model and real diesel fuels. Keggin-type polyoxometalates with the formulae [PMo12O40]3-, [PVMo11O40]4-, [PV2Mo10O40]4-, [PW12O40]3- were used as anions. It was shown that increasing the acid site strength leads to an increase of dibenzothiophene conversion to the corresponding sulfone. The best results were obtained in the presence of a catalyst, containing a nicotinic acid derivative as cation and phosphomolybdate as anion. The main factors affecting the process consisting of catalyst dosage, temperature, reaction time, oxidant dosage were investigated in detail. Under optimal conditions full oxidation of dibenzothiophene and more than a 90% desulfurization degree of real diesel fuel (initial sulfur content of 2050 ppm) were obtained (the oxidation conditions: NK-1 catalyst, molar ratio H2O2:S 10:1, molar ratio S:Mo 8:1, 1 mL MeCN, 70 °C, 1 h). The synthesized catalysts could be used five times with a slight decrease in activity.
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Affiliation(s)
- Argam Akopyan
- Department of Petroleum Chemistry and Organic Catalysis, Moscow State University, 119991 Moscow, Russia; (A.A.); (E.E.); (P.P.); (A.K.); (A.V.)
| | - Ekaterina Eseva
- Department of Petroleum Chemistry and Organic Catalysis, Moscow State University, 119991 Moscow, Russia; (A.A.); (E.E.); (P.P.); (A.K.); (A.V.)
| | - Polina Polikarpova
- Department of Petroleum Chemistry and Organic Catalysis, Moscow State University, 119991 Moscow, Russia; (A.A.); (E.E.); (P.P.); (A.K.); (A.V.)
| | - Anastasia Kedalo
- Department of Petroleum Chemistry and Organic Catalysis, Moscow State University, 119991 Moscow, Russia; (A.A.); (E.E.); (P.P.); (A.K.); (A.V.)
| | - Anna Vutolkina
- Department of Petroleum Chemistry and Organic Catalysis, Moscow State University, 119991 Moscow, Russia; (A.A.); (E.E.); (P.P.); (A.K.); (A.V.)
- Department of Physical and Colloid Chemistry, Gubkin Russian State University of Oil and Gas, 119991 Moscow, Russia
| | - Aleksandr Glotov
- Department of Petroleum Chemistry and Organic Catalysis, Moscow State University, 119991 Moscow, Russia; (A.A.); (E.E.); (P.P.); (A.K.); (A.V.)
- Department of Physical and Colloid Chemistry, Gubkin Russian State University of Oil and Gas, 119991 Moscow, Russia
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Mitra S, Das R, Singh A, Mukhopadhyay MK, Roy G, Ghosh SK. Surface Activities of a Lipid Analogue Room-Temperature Ionic Liquid and Its Effects on Phospholipid Membrane. Langmuir 2020; 36:328-339. [PMID: 31826620 DOI: 10.1021/acs.langmuir.9b02716] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
There are great efforts of synthesizing imidazolium-based ionic liquids (ILs) for developing new antibiotics as these molecules have shown strong antibacterial activities. Compared to a single-hydrocarbon-chained IL, the lipid analogues (LAs) with two chains are more effective. In the present study, the LA molecule MeIm(COOH)Me(Oleylamine)Iodide has been synthesized and its surface activities along with the effectiveness in restructuring of a model cellular membrane have been quantified. The molecule is found to be highly surface active as estimated from the area-pressure isotherm of a monolayer of the molecules formed at the air-water interface. The X-ray reflectivity (XRR) studies of a monolayer dip-coated on a hydrophilic substrate have shown the structural properties of the layer which resembles to those of unsaturated phospholipids. The LA molecules are observed to fluidize a phospholipid bilayer formed by the saturated lipid 1,2-dipalmitoyl-sn-glycero-3-phosphocholine (DPPC). At a lower surface pressure, the lipid monolayer of DPPC has exhibited a thickening effect at a low concentration of added LA and a thinning effect at higher concentration. However, at a high surface pressure of the monolayer, the thickness is found to decrease monotonically. The in-plane pressure-dependent interaction of LA molecules with model cellular membrane and the corresponding perturbation in the structure and physical properties of the membrane may be linked to the strong lysing effect of these types of molecules.
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Affiliation(s)
| | | | - A Singh
- Surface Physics and Material Science Division , Saha Institute of Nuclear Physics , AF Block, Bidhannagar , Kolkata 700064 , India
| | - M K Mukhopadhyay
- Surface Physics and Material Science Division , Saha Institute of Nuclear Physics , AF Block, Bidhannagar , Kolkata 700064 , India
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14
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Parajó JJ, Macário IPE, De Gaetano Y, Dupont L, Salgado J, Pereira JL, Gonçalves FJM, Mohamadou A, Ventura SPM. Glycine-betaine-derived ionic liquids: Synthesis, characterization and ecotoxicological evaluation. Ecotoxicol Environ Saf 2019; 184:109580. [PMID: 31493585 DOI: 10.1016/j.ecoenv.2019.109580] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2019] [Revised: 07/25/2019] [Accepted: 08/15/2019] [Indexed: 05/11/2023]
Abstract
Ionic Liquids (ILs) are generically regarded as environmentally "harmless" and thus, assumed as "non-toxic". However, due to the endless design possibilities, their ecotoxicological profile is still poorly known. An accurate knowledge on the toxicity of a substance is required, under the scope of environmental regulation worldwide, before their application and commercialization. Knowledge on the relationship between the chemical structure and toxic effects is essential for the future design of more biocompatible solvents. Focusing on the use of ILs as base lubricants, lubricant additives, or even as potential working fluids for absorption heat pumps, the knowledge on its environmental impact is of great importance, due to the possibility of spills. In this specific context, four analogues of glycine-betaine-based ILs (AGB-ILs) and four glycine-betaine based ILs (GB-ILs) were synthesized and characterized. Their ecotoxicity was assessed using representatives of two trophic levels in aquatic ecosystems, the bacteria Allivibrio fischeri (commonly used as a screening test organism) and the microalgae Raphidocelis subcapitata (as an alternative test organism that has been proven very sensitive to several IL families). The microalgae were more sensitive than the bacteria, hence, following a precautionary principle, we recommend considering the toxicity towards microalgae as an indicator in future studies regarding the focused ILs. Although four of the studied ILs were derived from a natural amino acid, all were considered hazardous for the aquatic environment, disproving the primary theory that all ILs derived from natural compounds are benign. Furthermore, the modification in the structure of anion and the cation can lead to the increase of toxicity.
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Affiliation(s)
- Juan J Parajó
- NaFoMat Group, Applied Physic Department, University of Santiago de Compostela. Campus Vida, 15782, Santiago de Compostela, Spain
| | - Inês P E Macário
- Department of Biology, CESAM (Centro de Estudos Do Ambiente e Do Mar), University of Aveiro, Campus Universitário de Santiago, 3810-193, Aveiro, Portugal
| | - Yannick De Gaetano
- ICMR, Institute of Molecular Chemistry of Reims, CNRS UMR 7312, University of Reims Champagne-Ardenne, BP 1039, F-51687, Reims Cedex 2, France
| | - Laurent Dupont
- ICMR, Institute of Molecular Chemistry of Reims, CNRS UMR 7312, University of Reims Champagne-Ardenne, BP 1039, F-51687, Reims Cedex 2, France
| | - Josefa Salgado
- NaFoMat Group, Applied Physic Department, University of Santiago de Compostela. Campus Vida, 15782, Santiago de Compostela, Spain
| | - Joana L Pereira
- Department of Biology, CESAM (Centro de Estudos Do Ambiente e Do Mar), University of Aveiro, Campus Universitário de Santiago, 3810-193, Aveiro, Portugal
| | - Fernando J M Gonçalves
- Department of Biology, CESAM (Centro de Estudos Do Ambiente e Do Mar), University of Aveiro, Campus Universitário de Santiago, 3810-193, Aveiro, Portugal
| | - Aminou Mohamadou
- ICMR, Institute of Molecular Chemistry of Reims, CNRS UMR 7312, University of Reims Champagne-Ardenne, BP 1039, F-51687, Reims Cedex 2, France
| | - Sónia P M Ventura
- CICECO, Department of Chemistry, University of Aveiro, Campus Universitário de Santiago, 3810-193, Aveiro, Portugal.
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Bielas R, Mielańczyk A, Skonieczna M, Mielańczyk Ł, Neugebauer D. Choline supported poly(ionic liquid) graft copolymers as novel delivery systems of anionic pharmaceuticals for anti-inflammatory and anti-coagulant therapy. Sci Rep 2019; 9:14410. [PMID: 31594975 PMCID: PMC6783615 DOI: 10.1038/s41598-019-50896-5] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2019] [Accepted: 09/20/2019] [Indexed: 01/18/2023] Open
Abstract
New type of carriers based on grafted poly(ionic liquid)s was designed for delivery of ionically attached salicylates (Sal). Choline derived ionic liquid monomeric units were successfully introduced with various content in the side chains by the controlled radical polymerization. Properly high amounts of ionic pharmaceutics in the polymer systems were achieved by the well-fitted length and grafting degree of the side chains. In aqueous solution the graft copolymers were self-assembled into the spherical superstructures with sizes up to 73 nm. Delivery studies showed "burst" release within 4 h, after that it was slower yielding ~70% of released drug within 80 h. Proposed nanocarriers supported low toxicity against human cells (NHDF and BEAS-2B), anti-inflammation activity evaluated with the use of pro-inflammatory interleukins (IL-6 and IL-8) and antibacterial activities towards E. coli. Adjustment of ionic drug content by structural parameters of graft copolymers, including grafting degree and graft length, are advantageous to tailor nanocarriers with self-assembly properties in aqueous media. Effective release process by ionic exchange and biological activity with low toxicity are promising for further development of this type of drug delivery (DDS).
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Affiliation(s)
- Rafał Bielas
- Department of Physical Chemistry and Technology of Polymers, Faculty of Chemistry, Silesian University of Technology, Strzody 9, 44-100, Gliwice, Poland
| | - Anna Mielańczyk
- Department of Physical Chemistry and Technology of Polymers, Faculty of Chemistry, Silesian University of Technology, Strzody 9, 44-100, Gliwice, Poland
| | - Magdalena Skonieczna
- Biosystems Group, Institute of Automatic Control, Faculty of Automatics, Electronics, and Informatics, Silesian University of Technology, Akademicka 16, Gliwice, Poland
- Biotechnology Centre, Silesian University of Technology, Krzywoustego 8, Gliwice, Poland
| | - Łukasz Mielańczyk
- Department of Histology and Cell Pathology, School of Medicine with the Division of Dentistry in Zabrze, Medical University of Silesia, Jordana 19, 41-808, Zabrze, Poland
| | - Dorota Neugebauer
- Department of Physical Chemistry and Technology of Polymers, Faculty of Chemistry, Silesian University of Technology, Strzody 9, 44-100, Gliwice, Poland.
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16
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Jin L, Shi Z, Zhang X, Liu X, Li H, Wang J, Liang F, Zhao W, Zhao C. Intelligent antibacterial surface based on ionic liquid molecular brushes for bacterial killing and release. J Mater Chem B 2019; 7:5520-5527. [PMID: 31432876 DOI: 10.1039/c9tb01199d] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The prevention of bacteria-induced infections has been increasing in importance in both clinical surgery and biomedical engineering. Although great attention has been paid to designing intelligent antibacterial surfaces, the fabrication processes are still not facile and universal enough, and the antibacterial efficiencies of these surfaces are also not ideal. Herein, ionic liquid (IL) molecules of 3-(12-mercaptododecyl)-1-methyl-1H-imidazol-3-ium bromide (IL(Br)) were synthesized with the minimum inhibitory concentrations as low as 4 and 8 μg mL-1 against Staphylococcus aureus (S. aureus) and Escherichia coli (E. coli), respectively. By simply immersing a polymeric substrate into the IL(Br) solution, an antibacterial surface with high killing efficiency of 99% against S. aureus (94% against E. coli) was achieved via a mussel-inspired approach. Subsequently, 97% S. aureus and 95% E. coli on the substrate could be released by simple ion-exchange of Br- with (CF3SO2)2N- due to the ion sensitivity of the IL molecular brushes. Thus, the proposed facile strategy towards a superior efficiency surface could be potentially used in intelligent antibacterial fields.
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Affiliation(s)
- Lunqiang Jin
- College of Polymer Science and Engineering, The State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065, P. R. China.
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17
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Mustahil NA, Baharuddin SH, Abdullah AA, Reddy AVB, Abdul Mutalib MI, Moniruzzaman M. Synthesis, characterization, ecotoxicity and biodegradability evaluations of novel biocompatible surface active lauroyl sarcosinate ionic liquids. Chemosphere 2019; 229:349-357. [PMID: 31078892 DOI: 10.1016/j.chemosphere.2019.05.026] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2019] [Revised: 05/02/2019] [Accepted: 05/03/2019] [Indexed: 05/23/2023]
Abstract
Ionic liquids (ILs) based surfactants have been emerged as attractive alternatives to the conventional surfactants owing to their tailor-made and eco-friendly properties. Therefore, present study described the synthesis of nine new fatty amino acids based IL surfactants utilizing lauroyl sarcosinate anion and pyrrolidinium, imidazolium, pyridinium, piperidinium, morpholinium and cholinium cations for the first time. The synthesized surface active lauroyl sarcosinate ionic liquids (SALSILs) were characterized by 1H NMR, 13C NMR and TGA. Next, the surface tension and critical micellar concentrations were determined and compared with the surface properties of ILs based surfactants. Further, the toxicity and biodegradability of the synthesized SALSIILs were evaluated to confirm their safe and efficient process applications. The studies revealed that three out of nine synthesized SALSILs containing pyridinium cation have showed strong activity towards the tested microbial growth. The remaining six SALSILs met the biocompatible measures demonstrating moderate to low activity depends on the tested microbes. The alicyclic SALSILs containing morpholinium and piperidinium cations have demonstrated 100% biodegradation after 28 days of the test period. Overall, it is believed that the synthesized SALSILs could effectively replace the conventional surfactants in a wide variety of applications.
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Affiliation(s)
- Noorul Adawiyah Mustahil
- Centre of Research in Ionic Liquids (CORIL), Universiti Teknologi PETRONAS, 32610, Seri Iskandar, Perak, Malaysia
| | - Siti Hawatulaila Baharuddin
- Centre of Research in Ionic Liquids (CORIL), Universiti Teknologi PETRONAS, 32610, Seri Iskandar, Perak, Malaysia
| | - Atikah Aini Abdullah
- Centre of Research in Ionic Liquids (CORIL), Universiti Teknologi PETRONAS, 32610, Seri Iskandar, Perak, Malaysia
| | | | - Mohamed Ibrahim Abdul Mutalib
- Centre of Research in Ionic Liquids (CORIL), Universiti Teknologi PETRONAS, 32610, Seri Iskandar, Perak, Malaysia; Department of Chemical Engineering, Universiti Teknologi PETRONAS, 32610, Seri Iskandar, Perak, Malaysia
| | - Muhammad Moniruzzaman
- Centre of Research in Ionic Liquids (CORIL), Universiti Teknologi PETRONAS, 32610, Seri Iskandar, Perak, Malaysia; Department of Chemical Engineering, Universiti Teknologi PETRONAS, 32610, Seri Iskandar, Perak, Malaysia.
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18
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Van Kerrebroeck R, Naert P, Heugebaert TSA, D'hooghe M, Stevens CV. Electrophilic Bromination in Flow: A Safe and Sustainable Alternative to the Use of Molecular Bromine in Batch. Molecules 2019; 24:E2116. [PMID: 31167456 PMCID: PMC6600453 DOI: 10.3390/molecules24112116] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2019] [Revised: 05/30/2019] [Accepted: 06/01/2019] [Indexed: 11/26/2022] Open
Abstract
Bromination reactions are crucial in today's chemical industry since the versatility of the formed organobromides makes them suitable building blocks for numerous syntheses. However, the use of the toxic and highly reactive molecular bromine (Br2) makes these brominations very challenging and hazardous. We describe here a safe and straightforward protocol for bromination in continuous flow. The hazardous Br2 or KOBr is generated in situ by reacting an oxidant (NaOCl) with HBr or KBr, respectively, which is directly coupled to the bromination reaction and a quench of residual bromine. This protocol was demonstrated by polybrominating both alkenes and aromatic substrates in a wide variety of solvents, with yields ranging from 78% to 99%. The protocol can easily be adapted for the bromination of other substrates in an academic and industrial environment.
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Affiliation(s)
- Reinout Van Kerrebroeck
- SynBioC research Group, Department of Green Chemistry and Technology, Ghent University, Coupure Links 653, 9000 Ghent, Belgium.
| | - Pieter Naert
- SynBioC research Group, Department of Green Chemistry and Technology, Ghent University, Coupure Links 653, 9000 Ghent, Belgium.
| | - Thomas S A Heugebaert
- SynBioC research Group, Department of Green Chemistry and Technology, Ghent University, Coupure Links 653, 9000 Ghent, Belgium.
| | - Matthias D'hooghe
- SynBioC research Group, Department of Green Chemistry and Technology, Ghent University, Coupure Links 653, 9000 Ghent, Belgium.
| | - Christian V Stevens
- SynBioC research Group, Department of Green Chemistry and Technology, Ghent University, Coupure Links 653, 9000 Ghent, Belgium.
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Arumugam V, Rajamanikandan R, Ilanchelian M, Moodley KG, Redhi GG. Investigation of binding interactions between BSA and [EPMpyr][Sal] through spectroscopy studies, thermophysical and thermodynamic properties. Spectrochim Acta A Mol Biomol Spectrosc 2019; 210:299-307. [PMID: 30471538 DOI: 10.1016/j.saa.2018.11.024] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/13/2018] [Revised: 10/29/2018] [Accepted: 11/12/2018] [Indexed: 06/09/2023]
Abstract
The intensity of research, probing the interactions between proteins and ionic liquid (IL), has been increasing and parallels the fast-growing applications of ILs in biotechnology. The specific aspects which have attracted the involvement of researchers are stabilization, separation, biochemical and enzymatic reactions of proteins. In this work the synthesis of IL, epoxypropyl and N-methyl substituted 2‑oxopyrrolidinium cation with salicylate anion, [EPMpyr][Sal], and its interaction with aqueous BSA{BSA(aq)-[EPMpyr][Sal]}. Measurements of thermophysical properties (density (ρ), and speed of sound (u)) showed that both moderately strong and weak interactions occur on treatment of BSA with that chosen IL. H-bond formation, dipole-dipole interactions and ionic interactions occurring in this system were investigated via thermophysical and thermodynamic properties as well as spectroscopic data. Thermodynamic data (excess molar volume (VmE), isentropic compressibility (ks), deviation in isentropic compressibility (∆ks) and intermolecular free length (Lf)) showed that there were stronger interaction between IL and BSA at higher temperature. The data from all the studies were correlated with Redlich Kister polynomial equation. The blue shift observed in the fluorescent spectra was interpreted to indicate that thetryptophan (Trp) residue of BSA moves to a more hydrophobic environment. It was also observed that the addition of more IL to BSA resulted in denaturation of BSA due to high hydrophobic nature of IL. Circular dichroism studies show that there were significant changes in the fine structure of BSA on interaction with IL. From the FTIR spectra the position of H-bond in the secondary structure of BSA was deduced.
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Affiliation(s)
| | - Ramar Rajamanikandan
- Department of Chemistry, Bharathiar University, Coimbatore 641 046, Tamil Nadu, India
| | | | | | - Gan G Redhi
- Department of Chemistry, Durban University of Technology, South Africa.
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Löwe R, Hanemann T, Hofmann A. Polymerizable Ionic Liquids for Solid-State Polymer Electrolytes. Molecules 2019; 24:molecules24020324. [PMID: 30658399 PMCID: PMC6359094 DOI: 10.3390/molecules24020324] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2018] [Revised: 01/11/2019] [Accepted: 01/13/2019] [Indexed: 12/03/2022] Open
Abstract
Eight new polymerizable ammonium-TFSI ionic liquids were synthesized and characterized with respect to an application in energy storage devices. The ionic liquids feature methacrylate or acrylate termination as polymerizable groups. The preparation was optimized to obtain the precursors and ionic liquids in high yield. All products were characterized by NMR and IR spectroscopy. Phase transition temperatures were obtained by DSC analysis. Density, viscosity and ionic conductivity of the ionic liquids were compared and discussed. The results reveal that the length of attached alkyl groups as well as the methyl group at the polymerizable function have significant influences on the ionic liquids physicochemical properties. Ionic conductivity values vary between 0.264 mS cm−1 for [C2NA,22]TFSI and 0.080 mS cm−1 for [C8NMA,22]TFSI at 25 °C. Viscosity values are within a range of 0.762 Pa s for [C2NA,22]TFSI and 1.522 Pa s for [C6NMA,22]TFSI at 25 °C.
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Affiliation(s)
- Robert Löwe
- Institute for Applied Materials, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, D-76344 Eggenstein-Leopoldshafen, Germany.
- Department of Microsystems Engineering, University of Freiburg, Georges-Köhler-Allee 102, D-79110 Freiburg, Germany.
| | - Thomas Hanemann
- Institute for Applied Materials, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, D-76344 Eggenstein-Leopoldshafen, Germany.
- Department of Microsystems Engineering, University of Freiburg, Georges-Köhler-Allee 102, D-79110 Freiburg, Germany.
| | - Andreas Hofmann
- Institute for Applied Materials, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, D-76344 Eggenstein-Leopoldshafen, Germany.
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21
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Forero Doria O, Castro R, Gutierrez M, Gonzalez Valenzuela D, Santos L, Ramirez D, Guzman L. Novel Alkylimidazolium Ionic Liquids as an Antibacterial Alternative to Pathogens of the Skin and Soft Tissue Infections. Molecules 2018; 23:molecules23092354. [PMID: 30223457 PMCID: PMC6225289 DOI: 10.3390/molecules23092354] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2018] [Revised: 09/03/2018] [Accepted: 09/10/2018] [Indexed: 01/05/2023] Open
Abstract
Keeping in mind the concept of green chemistry, this research aims to synthesize and characterize new ionic liquids (ILs) derived from N-cinnamyl imidazole with different sizes of alkyl chains (1, 6, 8, and 10 carbon atoms), and evaluate their antibacterial activity against Skin and soft tissue infections (SSTIs) causative bacteria. The antibacterial screening was carried out by agar well diffusion and the Minimum Inhibitory Concentration (MIC) and Half Maximum Inhibitory Concentration (IC50) of the different ILs were determined by microdilution in broth, also Molecular dynamics simulations were performed to study the interaction mechanism between ILs and membranes. The MIC value in Gram-positive bacteria showed that as the hydrocarbon chain increases, the MIC value decreases with a dose-dependent effect. Furthermore, Gram-negative bacteria showed high MIC values, which were also evidenced in the antibacterial screening. The molecular dynamics showed an incorporation of the ILs with the longer chain (10 C), corresponding to a passive diffusion towards the membrane surface, for its part, the ILs with the shorter chain due to its lack of hydrophobicity was not incorporated into the bilayer. Finally, the new ILs synthesized could be an alternative for the treatment of Gram-positive bacteria causative of SSTIs.
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Affiliation(s)
- Oscar Forero Doria
- Instituto de Química de Recursos Naturales, Universidad de Talca, P.O. Box 747, Talca 3460000, Chile.
| | - Ricardo Castro
- Multidisciplinary Agroindustry Research Laboratory, Universidad Autónoma de Chile, Talca 3460000, Chile.
- Carrera de Ingeniería en Construcción e Instituto de Ciencias Químicas Aplicadas, Universidad Autónoma de Chile, Talca 3460000, Chile.
| | - Margarita Gutierrez
- Instituto de Química de Recursos Naturales, Universidad de Talca, P.O. Box 747, Talca 3460000, Chile.
| | | | - Leonardo Santos
- Instituto de Química de Recursos Naturales, Universidad de Talca, P.O. Box 747, Talca 3460000, Chile.
| | - David Ramirez
- Instituto de Ciencias Biomédicas, Universidad Autónoma de Chile, Talca 3460000, Chile.
| | - Luis Guzman
- Departamento de Bioquímica Clínica e Inmunohematología, Facultad de Ciencias de la Salud, Universidad de Talca, P.O. Box 747, Talca 3460000, Chile.
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Zhang TH, He HX, Du JL, He ZJ, Yao S. Novel 3-Methyl-2-alkylthio Benzothiazolyl-Based Ionic Liquids: Synthesis, Characterization, and Antibiotic Activity. Molecules 2018; 23:molecules23082011. [PMID: 30103555 PMCID: PMC6222442 DOI: 10.3390/molecules23082011] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2018] [Revised: 08/06/2018] [Accepted: 08/06/2018] [Indexed: 11/17/2022] Open
Abstract
Three series of novel 3-methyl-2-alkylthio benzothiazolyl ionic liquids (ILs) were synthesized for the first time. After structural identification, their melting point, solubility, and thermostability together with antibiotic activity were determined successively. As a result, 3-methyl-2-alkylthio benzothiazolyl p-toluene sulfonate was found to have the highest antibacterial activity among the three series of ILs. Meanwhile, it has a good solubility in water as well. On the basis of comprehensive comparison with similar compounds, the effect of cations and anions of these benzothiazolium ILs on typical physical properties together with antibiotic performance was explored and discussed, which is very beneficial to take the greatest advantage of their structural designability for various purposes. Furthermore, the experiment data preliminarily discovered the relationships of the structure-properties/activities of the above three kinds ILs to a certain extent, which can provide useful references for future research and for the potential application of these new ILs as surfactant antiseptics or agricultural chemicals.
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Affiliation(s)
- Teng He Zhang
- School of Chemical Engineering, Sichuan University, Chengdu 610065, China.
| | - Hao Xi He
- Mianyang Blood Center, Mianyang 621000, China.
| | - Jun Liang Du
- College of Chemistry and Chemical Engineering, Mianyang Normal University, Mianyang 621000, China.
| | - Zhi Jian He
- College of Chemistry and Chemical Engineering, Mianyang Normal University, Mianyang 621000, China.
| | - Shun Yao
- School of Chemical Engineering, Sichuan University, Chengdu 610065, China.
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23
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Tot A, Vraneš M, Maksimović I, Putnik-Delić M, Daničić M, Belić S, Gadžurić S. The effect of imidazolium based ionic liquids on wheat and barley germination and growth: Influence of length and oxygen functionalization of alkyl side chain. Ecotoxicol Environ Saf 2018; 147:401-406. [PMID: 28888123 DOI: 10.1016/j.ecoenv.2017.08.066] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2017] [Revised: 08/22/2017] [Accepted: 08/24/2017] [Indexed: 05/19/2023]
Abstract
In this work five different imidazolium based ionic liquids, namely: 1-(2-oxybutyl)-3-methylimidazolium chloride, [C2OC2mIm][Cl]; 1-(2-oxypropyl)-3-methylimidazolium chloride, [C1OC2mIm][Cl]; 1-(3-hydroxypropyl)-3-ethylimidazolium chloride, [OHC3eIm][Cl]; 1-(3-hydroxypropyl)-3-methylimidazolium chloride, [OHC3mIm][Cl]; 1-(2-hydroxyethyl)-3-methylimidazolium chloride, [OHC2mIm][Cl], together with commercial 1-butyl-3-methylimidazolium chloride, [bmim][Cl] and synthesized protic imidazolium chloride, [Im][Cl], were prepared and their toxicity examined towards wheat and barley germination and growth. Introduction of the polar groups (in the form of hydroxyde and/or ether group) in the alkyl side chain of the imidazolium cation and their influence on the reduction of the ionic liquid's toxicity is demonstrated. The results indicate that toxicity of oxygen functionalized ILs is significantly lower against wheat comparing to non-functionalized analogues. In the case of barley, influence on germination follow the same trend as in the case of wheat, but for seedlings growth different trend is observed with more pronounced toxicity of ether functionalized ILs. From these results it was also shown that alkylation in the position N-3 atom of the imidazole significantly reduces toxicity of cation.
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Affiliation(s)
- A Tot
- University of Novi Sad, Faculty of Sciences, Department of Chemistry, Biochemistry and Environmental Protection, Trg D. Obradovića 3, 21000 Novi Sad, Serbia
| | - M Vraneš
- University of Novi Sad, Faculty of Sciences, Department of Chemistry, Biochemistry and Environmental Protection, Trg D. Obradovića 3, 21000 Novi Sad, Serbia.
| | - I Maksimović
- University of Novi Sad, Faculty of Agriculture, Trg D. Obradovića 8, 21000 Novi Sad, Serbia
| | - M Putnik-Delić
- University of Novi Sad, Faculty of Agriculture, Trg D. Obradovića 8, 21000 Novi Sad, Serbia
| | - M Daničić
- University of Novi Sad, Faculty of Agriculture, Trg D. Obradovića 8, 21000 Novi Sad, Serbia
| | - S Belić
- University of Novi Sad, Faculty of Sciences, Department of Chemistry, Biochemistry and Environmental Protection, Trg D. Obradovića 3, 21000 Novi Sad, Serbia
| | - S Gadžurić
- University of Novi Sad, Faculty of Sciences, Department of Chemistry, Biochemistry and Environmental Protection, Trg D. Obradovića 3, 21000 Novi Sad, Serbia
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Rezki N, Al-Sodies SA, Shreaz S, Shiekh RA, Messali M, Raja V, Aouad MR. Green Ultrasound versus Conventional Synthesis and Characterization of Specific Task Pyridinium Ionic Liquid Hydrazones Tethering Fluorinated Counter Anions: Novel Inhibitors of Fungal Ergosterol Biosynthesis. Molecules 2017; 22:E1532. [PMID: 29112179 PMCID: PMC6150352 DOI: 10.3390/molecules22111532] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2017] [Accepted: 11/03/2017] [Indexed: 11/29/2022] Open
Abstract
A series of specific task ionic liquids (ILs) based on a pyridiniumhydrazone scaffold in combination with hexafluorophosphate (PF₆-), tetrafluoroboron (BF₄-) and/or trifluoroacetate (CF₃COO-) counter anion, were designed and characterized by IR, NMR and mass spectrometry. The reactions were conducted under both conventional and green ultrasound procedures. The antifungal potential of the synthesized compounds 2-25 was investigated against 40 strains of Candida (four standard and 36 clinical isolates). Minimum inhibitory concentrations (MIC90) of the synthesized compounds were in the range of 62.5-2000 μg/mL for both standard and oral Candida isolates. MIC90 results showed that the synthesized 1-(2-(4-chlorophenyl)-2-oxoethyl)-4-(2-(4-fluorobenzylidene)hydrazinecarbonyl)-pyridin-1-ium hexafluorophosphate (11) was found to be most effective, followed by 4-(2-(4-fluorobenzylidene)hydrazinecarbonyl)-1-(2-(4-nitrophenyl)-2-oxoethyl)-pyridin-1-ium hexafluorophosphate (14) and 1-(2-ethoxy-2-oxoethyl)-4-(2-(4-fluorobenzylidene)hydrazinecarbonyl)pyridin-1-ium hexafluorophosphate (8). All the Candida isolates showed marked sensitivity towards the synthesized compounds. Ergosterol content was drastically reduced by more active synthesized compounds, and agreed well with MIC90 values. Confocal scanning laser microscopy (CLSM) results showed that the red colored fluorescent dye enters the test agent treated cells, which confirms cell wall and cell membrane damage. The microscopy results obtained suggested membrane-located targets for the action of these synthesized compounds. It appears that the test compounds might be interacting with ergosterol in the fungal cell membranes, decreasing the membrane ergosterol content and ultimately leading to membrane disruption as visible in confocal results. The present study indicates that these synthesized compounds show significant antifungal activity against Candida which forms the basis to carry out further in vivo experiments before their clinical use.
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Affiliation(s)
- Nadjet Rezki
- Department of Chemistry, Faculty of Sciences, Taibah University, P.O. Box 344, Al-Madinah Al-Munawarah 30002, Saudi Arabia.
- Laboratoire de Chimie et Electrochimie des Complexes Métalliques (LCECM) USTO-MB, Department of Chemistry, Faculty of Sciences, University of Sciences and Technology Mohamed Boudiaf, P.O. Box 1505, El M`nouar, Oran 31000, Algeria.
| | - Salsabeel A Al-Sodies
- Department of Chemistry, Faculty of Sciences, Taibah University, P.O. Box 344, Al-Madinah Al-Munawarah 30002, Saudi Arabia.
| | - Sheikh Shreaz
- Environment and Life Sciences Research Center, Kuwait Institute for Scientific Research, P.O. Box 24885, Safat 13109, Kuwait.
| | - Rayees Ahmad Shiekh
- Department of Chemistry, Faculty of Sciences, Taibah University, P.O. Box 344, Al-Madinah Al-Munawarah 30002, Saudi Arabia.
- Government Degree College Pulwama, University of Kashmir, Srinagar 192301, India.
| | - Mouslim Messali
- Department of Chemistry, Faculty of Sciences, Taibah University, P.O. Box 344, Al-Madinah Al-Munawarah 30002, Saudi Arabia.
| | - Vaseem Raja
- Department of Applied Sciences & Humanities, Faculty of Engineering & Technology, Jamia Millia Islamia, Central University, New Delhi 110025, India.
| | - Mohamed R Aouad
- Department of Chemistry, Faculty of Sciences, Taibah University, P.O. Box 344, Al-Madinah Al-Munawarah 30002, Saudi Arabia.
- Laboratoire de Chimie et Electrochimie des Complexes Métalliques (LCECM) USTO-MB, Department of Chemistry, Faculty of Sciences, University of Sciences and Technology Mohamed Boudiaf, P.O. Box 1505, El M`nouar, Oran 31000, Algeria.
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25
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Ziembowicz FI, Bender CR, Frizzo CP, Martins MAP, de Souza TD, Kloster CL, Santos Garcia IT, Villetti MA. Thermodynamic Insights into the Binding of Mono- and Dicationic Imidazolium Surfactant Ionic Liquids with Methylcellulose in the Diluted Regime. J Phys Chem B 2017; 121:8385-8398. [PMID: 28787160 DOI: 10.1021/acs.jpcb.7b03525.s001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Alkylimidazolium salts are an important class of ionic liquids (ILs) due to their self-assembly capacity when in solution and due to their potential applications in chemistry and materials science. Therefore, detailed knowledge of the physicochemical properties of this class of ILs and their mixtures with natural polymers is highly desired. This work describes the interactions between a homologous series of mono- (CnMIMBr) and dicationic imidazolium (Cn(MIM)2Br2) ILs with cellulose ethers in aqueous medium. The effects of the alkyl chain length (n = 10, 12, 14, and 16), type, and concentration range of ILs (below and above their cmc) on the binding to methylcellulose (MC) were evaluated. The thermodynamic parameters showed that the interactions are favored by the increase of the IL hydrocarbon chain length, and that the binding of monocationic ILs to MC is driven by entropy. The monocationic ILs bind more effectively on the methoxyl group of MC when compared to dicationic ILs, and this outcome may be rationalized by considering the structural difference between the conventional (CnMIMBr) and the bolaform (Cn(MIM)2Br2) surfactant ILs. The C16MIMBr interacts more strongly with hydroxypropylcellulose when compared to methylcellulose, indicating that the strength of the interaction also depends on the hydrophobicity of the cellulose ethers. Our findings highlight that several parameters should be taken into account when designing new complex formulations.
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Affiliation(s)
- Francieli Isa Ziembowicz
- Spectroscopy and Polymers Laboratory (LEPOL), Department of Physics, Federal University of Santa Maria , CEP 97105-900 Santa Maria, RS, Brazil
| | - Caroline Raquel Bender
- Department of Chemistry (NUQUIMHE), Federal University of Santa Maria , CEP 97105-900 Santa Maria, RS, Brazil
| | - Clarissa Piccinin Frizzo
- Department of Chemistry (NUQUIMHE), Federal University of Santa Maria , CEP 97105-900 Santa Maria, RS, Brazil
| | | | - Thiane Deprá de Souza
- Spectroscopy and Polymers Laboratory (LEPOL), Department of Physics, Federal University of Santa Maria , CEP 97105-900 Santa Maria, RS, Brazil
| | - Carmen Luisa Kloster
- Spectroscopy and Polymers Laboratory (LEPOL), Department of Physics, Federal University of Santa Maria , CEP 97105-900 Santa Maria, RS, Brazil
| | | | - Marcos Antonio Villetti
- Spectroscopy and Polymers Laboratory (LEPOL), Department of Physics, Federal University of Santa Maria , CEP 97105-900 Santa Maria, RS, Brazil
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Abstract
Until very recently, the term Lewis acidic ionic liquids (ILs) was nearly synonymous with halometallate ILs, with a strong focus on chloroaluminate(III) systems. The first part of this review covers the historical context in which these were developed, speciation of a range of halometallate ionic liquids, attempts to quantify their Lewis acidity, and selected recent applications: in industrial alkylation processes, in supported systems (SILPs/SCILLs) and in inorganic synthesis. In the last decade, interesting alternatives to halometallate ILs have emerged, which can be divided into two sub-sections: (1) liquid coordination complexes (LCCs), still based on halometallate species, but less expensive and more diverse than halometallate ionic liquids, and (2) ILs with main-group Lewis acidic cations. The two following sections cover these new liquid Lewis acids, also highlighting speciation studies, Lewis acidity measurements, and applications.
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Affiliation(s)
- Lucy C Brown
- School of Chemistry and Chemical Engineering, The Queen's University of Belfast, David Keir Building, Stranmillis Road, Belfast, BT9 5AG, UK
| | - James M Hogg
- School of Chemistry and Chemical Engineering, The Queen's University of Belfast, David Keir Building, Stranmillis Road, Belfast, BT9 5AG, UK
| | - Małgorzata Swadźba-Kwaśny
- School of Chemistry and Chemical Engineering, The Queen's University of Belfast, David Keir Building, Stranmillis Road, Belfast, BT9 5AG, UK.
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27
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Pernak J, Giszter R, Biedziak A, Niemczak M, Olszewski R, Marcinkowska K, Praczyk T. Alkyl(C 16, C 18, C 22)trimethylammonium-Based Herbicidal Ionic Liquids. J Agric Food Chem 2017; 65:260-269. [PMID: 27997185 DOI: 10.1021/acs.jafc.6b04528] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
In the framework of this study a synthesis methodology and characterization of long alkyl herbicidal ionic liquids (HILs) based on four commonly used herbicides (2,4-D, MCPA, MCPP, and dicamba) are presented. New HILs were obtained with high efficiency (>95%) using an acid-base reaction between herbicidal acids and hexadecyltrimethylammonium, octadecyltrimethylammonium, and behenyltrimethylammonium hydroxides in alcoholic medium. Among all synthesized salts, only three compounds comprising the MCPP anion were liquids at room temperature. Subsequently, the influence of both the alkyl chain length and the anion structure on their physicochemical properties (thermal decomposition profiles, solubility in 10 representative solvents, surface activity, density, viscosity, and refractive index) was determined. All HILs exhibited high thermal stability as well as surface activity; however, their solubility notably depended on both the length of the carbon chain and the structure of the anion. The herbicidal efficacy of the obtained salts was tested in greenhouse and field experiments. Greenhouse testing performed on common lambsquarters (Chenopodium album L.) and flixweed (Descurainia sophia L.) as test plants indicated that HILs were characterized by similar or higher efficacy compared to commercial herbicides. The results of field trials confirmed the high activity of HILs, particularly those containing phenoxyacids as anions (MCPA, 2,4-D, and MCPP).
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Affiliation(s)
- Juliusz Pernak
- Department of Chemical Technology, Poznan University of Technology , Poznan 60-965, Poland
| | - Rafał Giszter
- Department of Chemical Technology, Poznan University of Technology , Poznan 60-965, Poland
| | - Agnieszka Biedziak
- Department of Chemical Technology, Poznan University of Technology , Poznan 60-965, Poland
| | - Michał Niemczak
- Department of Chemical Technology, Poznan University of Technology , Poznan 60-965, Poland
| | | | | | - Tadeusz Praczyk
- Institute of Plant Protection - National Research Institute , Poznan 60-318, Poland
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Li HY, Chen CY, Cheng HT, Chu YH. Exploiting 1,2,3-Triazolium Ionic Liquids for Synthesis of Tryptanthrin and Chemoselective Extraction of Copper(II) Ions and Histidine-Containing Peptides. Molecules 2016; 21:molecules21101355. [PMID: 27754392 PMCID: PMC6274210 DOI: 10.3390/molecules21101355] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2016] [Revised: 10/05/2016] [Accepted: 10/09/2016] [Indexed: 12/23/2022] Open
Abstract
Based on a common structural core of 4,5,6,7-tetrahydro[1,2,3]triazolo[1,5-a]pyridine, a number of bicyclic triazolium ionic liquids 1–3 were designed and successfully prepared. In our hands, this optimized synthesis of ionic liquids 1 and 2 requires no chromatographic separation. Also in this work, ionic liquids 1, 2 were shown to be efficient ionic solvents for fast synthesis of tryptanthrin natural product. Furthermore, a new affinity ionic liquid 3 was tailor-synthesized and displayed its effectiveness in chemoselective extraction of both Cu(II) ions and, for the first time, histidine-containing peptides.
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Affiliation(s)
- Hsin-Yi Li
- Department of Chemistry and Biochemistry, National Chung Cheng University, Chiayi 62102, Taiwan.
| | - Chien-Yuan Chen
- Department of Chemistry and Biochemistry, National Chung Cheng University, Chiayi 62102, Taiwan.
| | - Hui-Ting Cheng
- Department of Chemistry and Biochemistry, National Chung Cheng University, Chiayi 62102, Taiwan.
| | - Yen-Ho Chu
- Department of Chemistry and Biochemistry, National Chung Cheng University, Chiayi 62102, Taiwan.
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29
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Rodriguez Castillo AS, Guihéneuf S, Le Guével R, Biard PF, Paquin L, Amrane A, Couvert A. Synthesis and toxicity evaluation of hydrophobic ionic liquids for volatile organic compounds biodegradation in a two-phase partitioning bioreactor. J Hazard Mater 2016; 307:221-230. [PMID: 26785216 DOI: 10.1016/j.jhazmat.2015.12.043] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2015] [Revised: 12/21/2015] [Accepted: 12/22/2015] [Indexed: 06/05/2023]
Abstract
Synthesis of several hydrophobic ionic liquids (ILs), which might be selected as good candidates for degradation of hydrophobic volatile organic compounds in a two-phase partitioning bioreactor (TPPB), were carried out. Several bioassays were also realized, such as toxicity evaluation on activated sludge and zebrafish, cytotoxicity, fluoride release in aqueous phase and biodegradability in order to verify their possible effects in case of discharge in the aquatic environment and/or human contact during industrial manipulation. The synthesized compounds consist of alkylimidazoliums, functionalized imidazoliums, isoqinoliniums, triazoliums, sulfoniums, pyrrolidiniums and morpholiniums and various counter-ions such as: PF6(-), NTf2(-) and NfO(-). Toxicity evaluation on activated sludge of each compound (5% v/v of IL) was assessed by using a glucose uptake inhibition test. Toxicity against zebrafish and cytotoxicity were evaluated by the ImPACCell platform of Rennes (France). Fluoride release in water was estimated by regular measurements using ion chromatography equipment. IL biodegradability was determined by measuring BOD28 of aqueous samples (compound concentration,1mM). All ILs tested were not biodegradable; while some of them were toxic toward activated sludge. Isoquinolinium ILs were toxic to human cancerous cell lines. Nevertheless no toxicity was found against zebrafish Danio rerio. Only one IL released fluoride after long-time agitation.
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Affiliation(s)
- Alfredo Santiago Rodriguez Castillo
- Ecole Nationale Supérieure de Chimie de Rennes, CNRS, UMR 6226, 11 Allée de Beaulieu, CS 50837, 35708 Rennes Cedex 7, France; Université européenne de Bretagne
| | - Solène Guihéneuf
- Université européenne de Bretagne; Université de Rennes 1, Sciences Chimiques de Rennes, UMR, CNRS 6226, Groupe Ingénierie Chimique & Molécules Pour le Vivant (ICMV), Bât. 10A, Campus de Beaulieu, Avenue du Général Leclerc, CS 74205, 35042 Rennes cedex, France.
| | - Rémy Le Guével
- Plate-forme ImPACcell Structure Fédérative de Recherche BIOSIT Université de Rennes 1, Bat. 8, Campus de Villejean, 2 Avenue du Pr. Leon Bernard, CS 34317, 35043 Rennes Cedex, France
| | - Pierre-François Biard
- Ecole Nationale Supérieure de Chimie de Rennes, CNRS, UMR 6226, 11 Allée de Beaulieu, CS 50837, 35708 Rennes Cedex 7, France; Université européenne de Bretagne
| | - Ludovic Paquin
- Université européenne de Bretagne; Université de Rennes 1, Sciences Chimiques de Rennes, UMR, CNRS 6226, Groupe Ingénierie Chimique & Molécules Pour le Vivant (ICMV), Bât. 10A, Campus de Beaulieu, Avenue du Général Leclerc, CS 74205, 35042 Rennes cedex, France
| | - Abdeltif Amrane
- Ecole Nationale Supérieure de Chimie de Rennes, CNRS, UMR 6226, 11 Allée de Beaulieu, CS 50837, 35708 Rennes Cedex 7, France; Université européenne de Bretagne
| | - Annabelle Couvert
- Ecole Nationale Supérieure de Chimie de Rennes, CNRS, UMR 6226, 11 Allée de Beaulieu, CS 50837, 35708 Rennes Cedex 7, France; Université européenne de Bretagne
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30
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Appiah C, Akbarzadeh J, Stojanovic-Marinow A, Peterlik H, Binder WH. Hierarchically Mesostructured Polyisobutylene-Based Ionic Liquids. Macromol Rapid Commun 2016; 37:1175-80. [PMID: 26991899 DOI: 10.1002/marc.201600020] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2016] [Revised: 02/11/2016] [Indexed: 11/07/2022]
Abstract
The formation and design of a hierarchically nanostructured poly(isobutylene)-based ionic liquid (PIB-ILs) is reported, displaying assembly into classical multiplets and an additional ordering of the aromatic counteranions. Three PIB-ILs (Mn = 3600 and 8600 g mol(-1) ), bearing imidazolium (1a), N-methylpyrrolidinium (1b), and triethylammonium cations (1c) together with the aromatic 2-(methylthio)benzoate anion are prepared via a combination of living carbocationic polymerization, "click" reactions and subsequent anion metathesis. The morphology of the novel PIB-ILs as well as its temperature-dependent behavior has been studied via small angle X-ray scattering, displaying two different transition temperatures: one originating from ordering of micelles within a cylinder, and the second from cylinder-cylinder arrangement. Furthermore, the incorporation of an aromatic, rigid, and bulky 2-(methylthio)benzoate anion into the PIB-ILs effects the formation of an internal assembly consisting of stacked cylindrical structures, composed from the mesoscale ordering of ionic "multiplets" characteristic for classical ionomers and from the typical distance of the cylinders themselves.
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Affiliation(s)
- Clement Appiah
- Institute of Chemistry, Chair of Macromolecular Chemistry Faculty of Natural Sciences II (Chemistry, Physics and Mathematics), Martin-Luther-University Halle-Wittenberg, Von-Danckelmann-Platz 4, Halle, 06120, Germany
| | - Johanna Akbarzadeh
- Faculty of Physics, Dynamics of Condensed Systems, University of Vienna, Strudlhofgasse 4, 1090, Vienna, Austria
| | - Anja Stojanovic-Marinow
- Institute of Chemistry, Chair of Macromolecular Chemistry Faculty of Natural Sciences II (Chemistry, Physics and Mathematics), Martin-Luther-University Halle-Wittenberg, Von-Danckelmann-Platz 4, Halle, 06120, Germany
| | - Herwig Peterlik
- Faculty of Physics, Dynamics of Condensed Systems, University of Vienna, Strudlhofgasse 4, 1090, Vienna, Austria
| | - Wolfgang H Binder
- Institute of Chemistry, Chair of Macromolecular Chemistry Faculty of Natural Sciences II (Chemistry, Physics and Mathematics), Martin-Luther-University Halle-Wittenberg, Von-Danckelmann-Platz 4, Halle, 06120, Germany
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31
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Messali M. Conventional versus ultrasound and microwave assisted synthesis: Some new environmentally friendly functionalized picolinium-based ionic liquids with potential antibacterial activity. Acta Pharm 2015; 65:253-70. [PMID: 26431104 DOI: 10.1515/acph-2015-0028] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 06/19/2015] [Indexed: 11/15/2022]
Abstract
A green chemistry approach has been adopted for the synthesis of thirty-four new picolinium-based ionic liquids using microwave (MW) and ultrasound (US) irradiation as well as conventional thermal heating. Their structures were confirmed by FT-IR, 1H NMR, 13C NMR, 11B NMR, 19F NMR, 31P NMR, mass spectra and elemental analyses. The antimicrobial profile of the novel ionic liquids was evaluated and the minimum inhibitory concentration (MIC) showed their moderate to low antimicrobial activity against eight types of human pathogens.
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Messali M. Eco-Friendly Synthesis of a New Class of Pyridinium-Based Ionic Liquids with Attractive Antimicrobial Activity. Molecules 2015; 20:14936-49. [PMID: 26287148 PMCID: PMC6331848 DOI: 10.3390/molecules200814936] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2015] [Revised: 07/30/2015] [Accepted: 08/05/2015] [Indexed: 11/25/2022] Open
Abstract
The present study reports a green synthesis of a new family of ionic liquids (ILs) based on functionalized 4-dimethylaminopyridinium derivatives. The structures of 23 newly synthesized ILs (2–24) were confirmed by FT-IR, 1H-, 13C-, 11B-, 19F-, and 31P-NMR spectroscopy and mass spectrometry. The antimicrobial activity of all novel ILs was tested against a panel of bacteria and fungi. The results prove that all tested ILs are effective antibacterial and antifungal agents, especially 4-(dimethylamino)-1-(4-phenoxybutyl)pyridinium derivatives 5 and 19.
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Affiliation(s)
- Mouslim Messali
- Department of Chemistry, Taibah University, Al-Madina Al-Mounawara 30002, Saudi Arabia.
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Cui S, Wang T, Hu X. Synthesis, characterization, and DFT studies of a new chiral ionic liquid from (S)-1-phenylethylamine. Spectrochim Acta A Mol Biomol Spectrosc 2014; 133:778-784. [PMID: 25000565 DOI: 10.1016/j.saa.2014.06.057] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2014] [Revised: 04/15/2014] [Accepted: 06/08/2014] [Indexed: 06/03/2023]
Abstract
A new chiral ionic liquid was synthesized from (S)-1-phenylethylamine and it was studied by IR, Raman, polarimetry, NMR and X-ray crystal diffraction. Its vibrational spectral bands are precisely ascribed to the studied structure with the aid of DFT theoretical calculations. The optimized geometries and calculated vibrational frequencies are evaluated via comparison with experimental values. The vibrational spectral data obtained from IR and Raman spectra are assigned based on the results of the theoretical calculations by the DFT-B3LYP method at 6-311G(d,p) level. The computed vibrational frequencies were scaled by scale factors to yield a good agreement with observed experimental vibrational frequencies.The vibrational modes assignments were performed by using the animation option of GaussView5.0 graphical interface for Gaussian program.
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Affiliation(s)
- Shuya Cui
- College of Chemistry and Chemical Engineering, Mianyang Normal University, Mianyang 621000, China.
| | - Tao Wang
- Department of Chemistry and Chemical Engineering, Heze University, Heze 274015, China
| | - Xiaoli Hu
- College of Chemistry and Chemical Engineering, Mianyang Normal University, Mianyang 621000, China
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Feder-Kubis J, Bryjak J. Laccase activity and stability in the presence of menthol-based ionic liquids. Acta Biochim Pol 2013; 60:741-745. [PMID: 24364047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2013] [Revised: 12/06/2013] [Accepted: 12/06/2013] [Indexed: 06/03/2023]
Abstract
Laccases attract attention due to their potential for manufacturing pharmaceutical intermediates from a wide array of phenolic and non-phenolic substrates that are sparingly soluble in water. Because of the high polarity of ionic liquids (ILs), they can dissolve polar and nonpolar compounds and are claimed as "green" alternative for volatile organic solvents. The main aim of this work was to find water-immiscible ILs suitable for Cerrena unicolor laccase. For that five ILs with bis(trifluoromethanesulfonyl)imide anions coupled with cations derived from natural alcohol - (1R,2S,5R)-(-)-menthol were synthesized, namely: (I) 3-butyl-1-[(1R,2S,5R)-(-)-menthoxymethyl]imidazolium, (II) 1-[(1R,2S,5R)-(-)-menthoxymethyl]-3-heptylimidazolium, (III) 1-[(1R,2S,5R)-(-)-menthoxymethyl]-3-methylpyridinium, (IV) heptyl[(1R,2S,5R)-(-)-menthoxymethyl]dimethylammonium, and (V) decyl[(1R,2S,5R)-(-)-menthoxymethyl]dimethylammonium ions. Laccase activity was tested in buffer saturated with ILs whereas stability tests in biphasic systems lasted 5 days. It was shown that ILs I, III-V did not significantly alter laccase activity (being 90-123% respective to the buffer) whereas IL II decreased reactivity in 20%. Stability tests revealed that ILs I, IV and V increased enzyme stability even more than in the buffer. For mathematical formalization of inactivation courses, isoenzyme model was applied but this model fitted experimental data only for sets obtained in the buffer (control) and in the presence of IL II. In the other cases, first-order reaction model was sufficient. This shows that ILs, even at very low concentrations, influence conformational stability of proteins, which is dependent on the cation structure. In general, the imidazolium (I) and ammonium (IV) salts with shorter alkyl chains supported laccase activity and stability.
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Affiliation(s)
- Joanna Feder-Kubis
- Wrocław University of Technology, Faculty of Chemistry, Department of Chemical Engineering, Wrocław, Poland
| | - Jolanta Bryjak
- Wrocław University of Technology, Faculty of Chemistry, Department of Bioorganic Chemistry, Wrocław, Poland
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Ferlin N, Gatard S, Van Nhien AN, Courty M, Bouquillon S. Click reactions as a key step for an efficient and selective synthesis of D-xylose-based ILs. Molecules 2013; 18:11512-25. [PMID: 24048284 PMCID: PMC6270402 DOI: 10.3390/molecules180911512] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2013] [Revised: 08/07/2013] [Accepted: 09/10/2013] [Indexed: 12/05/2022] Open
Abstract
d-Xylose-based ionic liquids have been prepared from d-xylose following a five steps reaction sequence, the key step being a click cycloaddition. These ionic liquids (ILs) have been characterized through classical analytical methods (IR, NMR, mass spectroscopy, elemental analysis) and their stability constants, Tg and Tdec, were also determined. Considering their properties and their hydrophilicity, these compounds could be alternative solvents for chemical applications under mild conditions.
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Affiliation(s)
- Nadège Ferlin
- Institut de Chimie Moléculaire de Reims, UMR CNRS 6229, Université de Reims Champagne-Ardenne, Boîte 44, B.P. 1039, Reims F-51687, France; E-Mails: (N.F.); (S.G.)
| | - Sylvain Gatard
- Institut de Chimie Moléculaire de Reims, UMR CNRS 6229, Université de Reims Champagne-Ardenne, Boîte 44, B.P. 1039, Reims F-51687, France; E-Mails: (N.F.); (S.G.)
| | - Albert Nguyen Van Nhien
- Laboratoire des Glucides FRE 3517, Université de Picardie Jules Verne, UFR des Sciences, 33 rue Saint Leu, Amiens Cedex 1 80039, France; E-Mail:
| | - Matthieu Courty
- Laboratoire de Réactivité et de Chimie des Solides UMR CNRS 7314, Université de Picardie Jules Verne, UFR des Sciences, 33 rue Saint Leu, Amiens Cedex 1 80039, France; E-Mail:
| | - Sandrine Bouquillon
- Institut de Chimie Moléculaire de Reims, UMR CNRS 6229, Université de Reims Champagne-Ardenne, Boîte 44, B.P. 1039, Reims F-51687, France; E-Mails: (N.F.); (S.G.)
- Author to whom correspondence should be addressed; E-Mail: ; Tel.: +33-3-2691-8973; Fax: +33-3-2691-3166
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Frade RFM, Simeonov S, Rosatella AA, Siopa F, Afonso CAM. Toxicological evaluation of magnetic ionic liquids in human cell lines. Chemosphere 2013; 92:100-105. [PMID: 23561571 DOI: 10.1016/j.chemosphere.2013.02.047] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2012] [Revised: 02/07/2013] [Accepted: 02/17/2013] [Indexed: 06/02/2023]
Abstract
Magnetic ionic liquids (MILs) are new solvents with an interesting broad of applications however their toxicity is still an open issue. In this paper we report the toxicity of [C(8)MIM] and [Choline-C(n)] based magnetic ionic liquids assessed in two human cell lines: normal skin fibroblasts (CRL-1502) and colorectal adenocarcinoma cells (CaCo-2), acquiring this last characteristics of human enterocytes after differentiation. The results showed that [CoCl(4)] and [MnCl(4)] are more prone to generate cytotoxicity.
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Affiliation(s)
- Raquel F M Frade
- iMed.UL, Faculdade de Farmácia da Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003 Lisboa, Portugal.
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Messali M, Moussa Z, Alzahrani AY, El-Naggar MY, ElDouhaibi AS, Judeh ZMA, Hammouti B. Synthesis, characterization and the antimicrobial activity of new eco-friendly ionic liquids. Chemosphere 2013; 91:1627-34. [PMID: 23357867 DOI: 10.1016/j.chemosphere.2012.12.062] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2012] [Revised: 12/15/2012] [Accepted: 12/21/2012] [Indexed: 05/07/2023]
Abstract
A green microwave-assisted procedure for the preparation of a series of 24 new 1-alkyl-3-ethylimidazolium ionic liquids with different functional groups in the alkyl chain is described. Moreover, the synthesis of a variety of ten new geminal dicationic ionic liquids is reported. Their structures were characterized by FT-IR, (1)H NMR, (13)C NMR, (11)B, (19)F, (31)P, and mass spectrometry. Several ionic liquids were selected for antimicrobial activity studies, yielding very interesting and promising results.
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Affiliation(s)
- Mouslim Messali
- Department of Chemistry, Taibah University, 30002 Al-Madina Al-Mounawara, Saudi Arabia.
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Narayanaperumal S, da Silva RC, Feu KS, de la Torre AF, Corrêa AG, Paixão MW. Basic-functionalized recyclable ionic liquid catalyst: A solvent-free approach for Michael addition of 1,3-dicarbonyl compounds to nitroalkenes under ultrasound irradiation. Ultrason Sonochem 2013; 20:793-798. [PMID: 23218731 DOI: 10.1016/j.ultsonch.2012.11.002] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2012] [Revised: 10/22/2012] [Accepted: 11/03/2012] [Indexed: 06/01/2023]
Abstract
A task-specific ionic liquid (TSIL) has been introduced as a recyclable catalyst in Michael addition. A series of nitroalkenes and various C-based nucleophiles were reacted in the presence of 30mol% of recyclable basic-functionalized ionic liquid. Good to excellent yields were obtained in 30min under ultrasound irradiation.
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Affiliation(s)
- Senthil Narayanaperumal
- Departamento de Química, Universidade Federal de São Carlos, 13565-905 São Carlos, SP, Brazil
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Abstract
We present a straightforward strategy for the synthesis of highly charged poly(ionic liquid)-functionalized particles in low-polarity solvents. A series of cationic liquid monomers consisting of a tetraalkyl ammonium cation and a fluorinated tetrakis[phenyl] borate anion linked, via a C3-alkyl chain, to a methacrylate unit were synthesized. The addition of this ionic monomer to a conventional dispersion polymerization of methyl methacrylate and methacrylic acid at 80 °C in a mixed dodecane/hexane solvent yielded spherical, highly monodisperse particles with mean diameters of between ~50 and 2500 nm with high electrophoretic mobility and stability in nonpolar solvents such as dodecane. The surface potential in dodecane could be adjusted in the range from 0 to 180 ± 9 mV by altering the ratio of ionic monomer to methacrylate monomers. The particles open up new opportunities for the electrostatic assembly of nanoparticles and organized structures in nonpolar environments.
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Hou XD, Liu QP, Smith TJ, Li N, Zong MH. Evaluation of toxicity and biodegradability of cholinium amino acids ionic liquids. PLoS One 2013; 8:e59145. [PMID: 23554985 PMCID: PMC3598705 DOI: 10.1371/journal.pone.0059145] [Citation(s) in RCA: 169] [Impact Index Per Article: 15.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2012] [Accepted: 02/12/2013] [Indexed: 11/18/2022] Open
Abstract
Cholinium amino acid ionic liquids ([Ch][AA] ILs), which are wholly composed of renewable biomaterials, have recently been demonstrated to have very promising properties for applications in organic synthesis and biomass pretreatment. In this work, the toxicity of these ILs toward enzymes and bacteria was assessed, and the effect of the anion on these properties is discussed. The inhibitory potentials of this type of ILs to acetylcholinesterase were weaker approximately an order of magnitude than the traditional IL 1-butyl-3-methylimidazolium tetrafluoroborate. Additionally, the [Ch][AA] ILs displayed low toxicity toward the bacteria tested. Furthermore, the biodegradability of the [Ch][AA] ILs was evaluated via the closed bottle and CO(2) headspace tests using wastewater microorganisms. All the ILs were classified as 'readily biodegradable' based on their high levels of mineralization (62-87%). The presence of extra carboxyl or amide groups on the amino acid side chain rendered the ILs significantly more susceptible to microbial breakdown. In addition, for most of the [Ch][AA] ILs, low toxicity correlated with good biodegradability. The low toxicity and high biodegradability of these novel [Ch][AA] make them promising candidates for use as environmentally friendly solvents in large-scale applications.
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Affiliation(s)
- Xue-Dan Hou
- State Key Laboratory of Pulp and Paper Engineering, College of Light Industry and Food Sciences, South China University of Technology, Guangzhou, China
- College of Bioscience and Bioengineering, South China University of Technology, Guangzhou, China
| | - Qiu-Ping Liu
- College of Bioscience and Bioengineering, South China University of Technology, Guangzhou, China
| | - Thomas J. Smith
- Biomedical Research Centre, Sheffield Hallam University, Sheffield, United Kingdom
| | - Ning Li
- State Key Laboratory of Pulp and Paper Engineering, College of Light Industry and Food Sciences, South China University of Technology, Guangzhou, China
- * E-mail: (NL); (MHZ)
| | - Min-Hua Zong
- State Key Laboratory of Pulp and Paper Engineering, College of Light Industry and Food Sciences, South China University of Technology, Guangzhou, China
- * E-mail: (NL); (MHZ)
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Garcia MT, Ribosa I, Perez L, Manresa A, Comelles F. Aggregation behavior and antimicrobial activity of ester-functionalized imidazolium- and pyridinium-based ionic liquids in aqueous solution. Langmuir 2013; 29:2536-45. [PMID: 23360222 DOI: 10.1021/la304752e] [Citation(s) in RCA: 169] [Impact Index Per Article: 15.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Two series of long chain imidazolium- and pyridinium-based ionic liquids containing an ester functional group in the alkyl side chain, 3-methyl-1-alkyloxycarbonylmethylimidazolium bromides (C(n)EMeImBr) and 1-alkyloxycarbonylmethylpyridinium bromides (C(n)EPyrBr), were synthesized and their thermal stability, aggregation behavior in aqueous medium, and antimicrobial activity investigated. The introduction of an ester group decreased the thermal stability of the functionalized ILs compared to simple alkyl chain containing ILs (1-alkyl-3-methylimidazolium bromides and 1-alkylpyridinium bromides). Tensiometry, conductimetry, and spectrofluorimetry were applied to study the self-aggregation of the amphiphilic ILs in aqueous solution. The ILs investigated displayed surface activity and the characteristic chain length dependence of the micellization process of surfactants. As compared to simple alkyl chain containing ILs bearing the same hydrocarbon chain, ester-functionalized ILs possess higher adsorption efficiency (pC(20)) and significantly lower critical micelle concentration (cmc) and surface tension at the cmc (γ(cmc)), indicating that the incorporation of an ester group promotes adsorption at the air/water interface and micelle formation. The antimicrobial activity was evaluated against Gram-negative and Gram-positive bacteria and fungi. ILs containing more than eight carbon atoms in the alkyl chain showed antimicrobial activity. Their efficiency as antimicrobial agents increased with the hydrophobicity of the amphiphilic cation being the C(12) homologous the most active compounds. The incorporation of an ester group particularly increased the biological activity against fungi.
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Affiliation(s)
- M Teresa Garcia
- Department of Chemical and Surfactant Technology, Institut de Quimica Avançada de Catalunya IQAC-CSIC, Jordi Girona 18-26, 08034 Barcelona, Spain.
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Pearson A, O'Mullane AP, Bhargava SK, Bansal V. Effect of imidazolium-based ionic liquids on the nanoscale morphology of CuTCNQ (TCNQ = 7,7,8,8-tetracyanoquinodimethane) metal-organic semiconductors. Langmuir 2013; 29:8-12. [PMID: 23244737 DOI: 10.1021/la303885r] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
We demonstrate for the first time the ionic-liquid-mediated synthesis of nanostructured CuTCNQ by the simple immersion of copper in a solution of TCNQ where the viscosity of the medium significantly impacts the corrosion-crystallization process and the final morphology of the material.
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Affiliation(s)
- Andrew Pearson
- NanoBiotechnology Research Lab (NBRL), RMIT University, GPO Box 2476 V, Melbourne VIC 3000, Australia
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Hossain MI, El-Harbawi M, Alitheen NBM, Noaman YA, Lévêque JM, Yin CY. Synthesis and anti-microbial potencies of 1-(2-hydroxyethyl)-3-alkylimidazolium chloride ionic liquids: microbial viabilities at different ionic liquids concentrations. Ecotoxicol Environ Saf 2013; 87:65-69. [PMID: 23107478 DOI: 10.1016/j.ecoenv.2012.09.020] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2012] [Revised: 09/04/2012] [Accepted: 09/18/2012] [Indexed: 06/01/2023]
Abstract
Three 1-(2-hydroxyethyl)-3-alkylimidazolium chloride room temperature ionic liquids (ILs) [2OHimC(n)][Cl]; (n=0, 1, 4) have been synthesized from the appropriate imidazole precursors and characterized by IR and NMR spectroscopies and elemental analysis. Their anti-microbial activities were investigated using the well-diffusion method. The viabilities of Escherichia coli, Aeromonas hydrophila, Listeria monocytogenes and Salmonella enterica as a function of IL concentrations were studied. The minimal inhibitory concentrations (MICs) and EC₅₀ values for the present ILs were within the concentration range from 60 to 125 mM and 23 to 73 mM. The anti-microbial potencies of the present ILs were compared to a standard antibiotic, gentamicin. The finding affords additional perspective on the level of ILs toxicity to aquatic lifeforms and yet, this characteristic can be readily harnessed to detect microbial growth and activity.
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Affiliation(s)
- M Ismail Hossain
- Chemical Engineering Department, Universiti Teknologi PETRONAS, 31750 Bandar Seri Iskandar, Tronoh, Perak, Malaysia
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Green DC, Glatzel S, Collins AM, Patil AJ, Hall SR. A new general synthetic strategy for phase-pure complex functional materials. Adv Mater 2012; 24:5767-5772. [PMID: 22927336 DOI: 10.1002/adma.201202683] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2012] [Indexed: 06/01/2023]
Abstract
The ability of ionic liquids to solvate inorganic salts completely has to date never been employed in the synthesis of complex inorganic materials. Here, we demonstrate that complex functional oxides, even those traditionally considered extremely difficult to synthesize in bulk, such as quinternary superconductors, are produced with no impurity phases and on timescales that are much shorter than other synthetic techniques.
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Affiliation(s)
- David C Green
- Complex Functional Materials Group, School of Chemistry, University of Bristol, UK
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Bernal JM, Lozano P, García-Verdugo E, Burguete MI, Sánchez-Gómez G, López-López G, Pucheault M, Vaultier M, Luis SV. Supercritical synthesis of biodiesel. Molecules 2012; 17:8696-719. [PMID: 22825622 PMCID: PMC6268286 DOI: 10.3390/molecules17078696] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2012] [Revised: 07/12/2012] [Accepted: 07/16/2012] [Indexed: 11/17/2022] Open
Abstract
The synthesis of biodiesel fuel from lipids (vegetable oils and animal fats) has gained in importance as a possible source of renewable non-fossil energy in an attempt to reduce our dependence on petroleum-based fuels. The catalytic processes commonly used for the production of biodiesel fuel present a series of limitations and drawbacks, among them the high energy consumption required for complex purification operations and undesirable side reactions. Supercritical fluid (SCF) technologies offer an interesting alternative to conventional processes for preparing biodiesel. This review highlights the advances, advantages, drawbacks and new tendencies involved in the use of supercritical fluids (SCFs) for biodiesel synthesis.
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Affiliation(s)
- Juana M. Bernal
- Departamento de Bioquímica y Biología Molecular B e Inmunología, Facultad de Química, Regional Campus of International Excellence “Campus Mare Nostrum”, Universidad de Murcia, Campus de Espinardo, E-30100 Murcia, Spain;
| | - Pedro Lozano
- Departamento de Bioquímica y Biología Molecular B e Inmunología, Facultad de Química, Regional Campus of International Excellence “Campus Mare Nostrum”, Universidad de Murcia, Campus de Espinardo, E-30100 Murcia, Spain;
| | - Eduardo García-Verdugo
- Departamento de Química Inorgánica y Orgánica, Universidad Jaume I, Campus del Riu Sec, E-12071 Castellón, Spain; (E.G.-V.); (M.I.B.); (S.V.L.)
| | - M. Isabel Burguete
- Departamento de Química Inorgánica y Orgánica, Universidad Jaume I, Campus del Riu Sec, E-12071 Castellón, Spain; (E.G.-V.); (M.I.B.); (S.V.L.)
| | - Gregorio Sánchez-Gómez
- Departamento de Química Inorgánica, Facultad de Química, Regional Campus of International Excellence “Campus Mare Nostrum”, Universidad de Murcia, Campus de Espinardo, E-30100 Murcia, Spain; (G.S.-G.); (G.L.-L.)
| | - Gregorio López-López
- Departamento de Química Inorgánica, Facultad de Química, Regional Campus of International Excellence “Campus Mare Nostrum”, Universidad de Murcia, Campus de Espinardo, E-30100 Murcia, Spain; (G.S.-G.); (G.L.-L.)
| | - Mathieu Pucheault
- Groupe Phoenics, Institut des Sciences Moléculaires, Université Bordeaux 1. CNRS UMR 5255, F33405 Talence cedex, France; (M.P.); (M.V.)
| | - Michel Vaultier
- Groupe Phoenics, Institut des Sciences Moléculaires, Université Bordeaux 1. CNRS UMR 5255, F33405 Talence cedex, France; (M.P.); (M.V.)
| | - Santiago V. Luis
- Departamento de Química Inorgánica y Orgánica, Universidad Jaume I, Campus del Riu Sec, E-12071 Castellón, Spain; (E.G.-V.); (M.I.B.); (S.V.L.)
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Abstract
In recent years, the designer nature of ionic liquids (ILs) has driven their exploration and exploitation in countless fields among the physical and chemical sciences. A fair measure of the tremendous attention placed on these fluids has been attributed to their inherent designer nature. And yet, there are relatively few examples of reviews that emphasize this vital aspect in an exhaustive or meaningful way. In this critical review, we systematically survey the physicochemical properties of the collective library of ether- and alcohol-functionalized ILs, highlighting the impact of ionic structure on features such as viscosity, phase behavior/transitions, density, thermostability, electrochemical properties, and polarity (e.g. hydrophilicity, hydrogen bonding capability). In the latter portions of this review, we emphasize the attractive applications of these functionalized ILs across a range of disciplines, including their use as electrolytes or functional fluids for electrochemistry, extractions, biphasic systems, gas separations, carbon capture, carbohydrate dissolution (particularly, the (ligno)celluloses), polymer chemistry, antimicrobial and antielectrostatic agents, organic synthesis, biomolecular stabilization and activation, and nanoscience. Finally, this review discusses anion-functionalized ILs, including sulfur- and oxygen-functionalized analogs, as well as choline-based deep eutectic solvents (DESs), an emerging class of fluids which can be sensibly categorized as semi-molecular cousins to the IL. Finally, the toxicity and biodegradability of ether- and alcohol-functionalized ILs are discussed and cautiously evaluated in light of recent reports. By carefully summarizing literature examples on the properties and applications of oxy-functional designer ILs up till now, it is our intent that this review offers a barometer for gauging future advances in the field as well as a trigger to spur further contemplation of these seemingly inexhaustible and--relative to their potential--virtually untouched fluids. It is abundantly clear that these remarkable fluidic materials are here to stay, just as certain design rules are slowly beginning to emerge. However, in fairness, serendipity also still plays an undeniable role, highlighting the need for both expanded in silico studies and a beacon to attract bright, young researchers to the field (406 references).
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Affiliation(s)
- Shaokun Tang
- Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering & Technology, Tianjin University, Tianjin 300072, China
| | - Gary A. Baker
- Department of Chemistry, University of Missouri-Columbia, Columbia, MO 65211, USA
| | - Hua Zhao
- Chemistry Program, Savannah State University, Savannah, GA 31404, USA
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Ignat’ev NV, Barthen P, Kucheryna A, Willner H, Sartori P. A convenient synthesis of triflate anion ionic liquids and their properties. Molecules 2012; 17:5319-38. [PMID: 22565482 PMCID: PMC6268271 DOI: 10.3390/molecules17055319] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2012] [Revised: 04/13/2012] [Accepted: 04/13/2012] [Indexed: 11/16/2022] Open
Abstract
A solvent- and halogen-free synthesis of high purity triflate ionic liquids via direct alkylation of organic bases (amines, phosphines or heterocyclic compounds) with methyl and ethyl trifluoromethanesulfonate (methyl and ethyl triflate) has been developed. Cheap and non-toxic dimethyl and diethyl carbonate serve as source for the methyl and ethyl groups in the preparation of methyl and ethyl triflate by this invented process. The properties of ionic liquids containing the triflate anion are determined and discussed.
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Affiliation(s)
- Nikolai V. Ignat’ev
- Merck KGaA, PM-ABE, Ionic Liquids Research Laboratory, Frankfurter Str. 250, Darmstadt D-64293, Germany
- Author to whom correspondence should be addressed; ; Tel.: +49-151-1454-3102; Fax: +49-6151-728-587
| | - Peter Barthen
- Inorganic Chemistry, Henrich-Heine-University Düsseldorf, Universitätsstrasse 1, Düsseldorf D-40225, Germany;
| | - Andryi Kucheryna
- Inorganic Chemistry, Bergische University Wuppertal, Gauss Str. 20, Wuppertal D-42119, Germany; (A.K.); (H.W.)
| | - Helge Willner
- Inorganic Chemistry, Bergische University Wuppertal, Gauss Str. 20, Wuppertal D-42119, Germany; (A.K.); (H.W.)
| | - Peter Sartori
- Professor Emeritus, Inorganic Chemistry, University Duisburg-Essen, Lotharstrasse 1, Duisburg D-47048, Germany;
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Brown P, Butts CP, Eastoe J, Fermin D, Grillo I, Lee HC, Parker D, Plana D, Richardson RM. Anionic surfactant ionic liquids with 1-butyl-3-methyl-imidazolium cations: characterization and application. Langmuir 2012; 28:2502-9. [PMID: 22208500 DOI: 10.1021/la204557t] [Citation(s) in RCA: 149] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
For the first time a series of anionic surfactant ionic liquids (SAILs) has been synthesized based on organic surfactant anions and 1-butyl-3-methyl-imidazolium cations. These compounds are more environmentally friendly and chemically tunable as compared to other common ionic liquids. A detailed investigation of physicochemical properties highlights potential applications from battery design to reaction control, and studies into aqueous aggregation behavior, as well as structuring in pure ILs, point to possible uses in electrochemistry.
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Affiliation(s)
- Paul Brown
- School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, United Kingdom
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Tanaka S, Kida K, Fujimoto H, Makino T, Miyake Y. Self-assembling imidazolium-based ionic liquid in rigid nanopores induces anomalous CO2 adsorption at low pressure. Langmuir 2011; 27:7991-7995. [PMID: 21644549 DOI: 10.1021/la201431z] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
An alkylimidazolium-based long-chain ionic liquid (LCIL) was immobilized in silica nanopores via a supramolecular assembly approach. To discuss the characteristic features of LCIL in a confined nanospace, except for the characteristics of the host materials, we have prepared the silica host with monodisperse morphology and a nanostructured system to immobilize LCIL. The nanostructure is composed of three distinct regions: the silica framework, the hydrophobic interior of the alkyl chains, and the organic-inorganic ionic interface. Anomalous CO(2) adsorption sites were found to be well-ordered locations on the ionic interface fabricated by the π-π-stacked imidazolium heads containing inorganic anions and polar silica surfaces.
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Affiliation(s)
- Shunsuke Tanaka
- Department of Chemical, Energy and Environmental Engineering, Faculty of Environmental and Urban Engineering, Kansai University, Suita-shi, Osaka 564-8680 Japan.
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