1
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Gumus E, Bingol H, Zor E. Nanomaterials-enriched sensors for detection of chiral pharmaceuticals. J Pharm Biomed Anal 2022; 221:115031. [PMID: 36115205 DOI: 10.1016/j.jpba.2022.115031] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2022] [Revised: 09/02/2022] [Accepted: 09/04/2022] [Indexed: 10/31/2022]
Abstract
Advancements in nanoscience and nanotechnology have opened new pathways to fabricate novel nanostructures with interesting properties that would be used for different applications. In this respect, nanostructures comprising chirality are one of the most rapidly developing research fields encompassing chemistry, physics and biology. Chirality, also known as mirror asymmetry, describes the geometrical property of an object that is not superimposable on its mirror image. This characteristic plays a crucial role because these identical forms of chiral species in pharmaceuticals or food additives may exhibit different effects on living organisms. Therefore, chiral analysis is an important field of modern chemical analysis in health-related industries that are reliant on the production of enantiomeric compounds involving pharmaceuticals. This review covers the recent advances dealing with the synthesis, design and advantageous analytical performance of nanomaterials-enriched sensors used for chiral pharmaceuticals. We conclude this review with the challenges existing in this research field and our perspectives on some potential strategies with cutting-edge approaches for the rational design of sensors for chiral pharmaceuticals. We expect this comprehensive review will inspire future studies in nanomaterials-enriched chiral sensors.
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Affiliation(s)
- Eda Gumus
- Biomaterials and Biotechnology Laboratory, Science and Technology Research and Application Center (BITAM), Necmettin Erbakan University, 42140 Konya, Turkey
| | - Haluk Bingol
- Biomaterials and Biotechnology Laboratory, Science and Technology Research and Application Center (BITAM), Necmettin Erbakan University, 42140 Konya, Turkey; Department of Chemistry Education, A.K. Education Faculty, Necmettin Erbakan University, 42090 Konya, Turkey
| | - Erhan Zor
- Biomaterials and Biotechnology Laboratory, Science and Technology Research and Application Center (BITAM), Necmettin Erbakan University, 42140 Konya, Turkey; Department of Science Education, A.K. Education Faculty, Necmettin Erbakan University, 42090 Konya, Turkey.
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2
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Wen J, Feng L, Zhao H, Zheng L, Stavropoulos P, Ai L, Zhang J. Chiral Recognition of Hydantoin Derivatives Enabled by Tetraaza Macrocyclic Chiral Solvating Agents Using 1H NMR Spectroscopy. J Org Chem 2022; 87:7934-7944. [PMID: 35675642 DOI: 10.1021/acs.joc.2c00587] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Enantiomers of a series of hydantoin derivatives were prepared from d- and l-amino acids with p-tolyl isocyanate and 3,5-bis(trifluoromethyl)phenyl isocyanate as guests for chiral recognition by 1H NMR spectroscopy. Meanwhile, several tetraaza macrocyclic compounds were synthesized as chiral solvating agents from d-phenylalanine and (1S,2S)-(+)-1,2-diaminocyclohexane. An uncommon enantiomeric discrimination has been successfully established for hydantoin derivatives, representatives of five-membered N,N-heterocycles, in the presence of tetraaza macrocyclic chiral solvating agents (TAMCSAs) 1a-1c by means of 1H NMR spectroscopy. Several unprecedented nonequivalent chemical shifts (up to 1.309 ppm) were observed in the split 1H NMR spectra. To evaluate practical applications in the determination of enantiomeric excess (ee), the ee values of samples with different optical purities (up to 95% ee) were accurately calculated by the integration of relevant proton peaks. To better understand the chiral discriminating behavior, Job plots of (±)-G1 with TAMCSA 1a were investigated. Furthermore, in order to further explore any underlying intermolecular hydrogen bonding interactions, theoretical calculations of the enantiomers of (S)-G1 and (R)-G1 with TAMCSA 1a were performed by means of the hybrid density functional theory (B3LYP/6-31G*) of the Gaussian 16 program.
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Affiliation(s)
- Jie Wen
- College of Chemistry, Beijing Normal University, Beijing 100875, P. R. China
| | - Lei Feng
- College of Chemistry, Beijing Normal University, Beijing 100875, P. R. China
| | - Hongmei Zhao
- State Key Laboratory of Information Photonics and Communications, School of Science, Beijing University of Posts and Telecommunications, Beijing 100876, P. R. China
| | - Li Zheng
- College of Chemistry, Beijing Normal University, Beijing 100875, P. R. China
| | - Pericles Stavropoulos
- Department of Chemistry, Missouri University of Science and Technology, Rolla, Missouri 65409, United States
| | - Lin Ai
- College of Chemistry, Beijing Normal University, Beijing 100875, P. R. China
| | - Jiaxin Zhang
- College of Chemistry, Beijing Normal University, Beijing 100875, P. R. China
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4
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Kaur N, Rahim JU, Rai R, Chopra HK. Synthesis and Application of (
S
)‐Nicotine‐Based Chiral Ionic Liquids in Enantiomeric Recognition by Using Fluorescence Spectroscopy. ChemistrySelect 2021. [DOI: 10.1002/slct.202100935] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Nirmaljeet Kaur
- Chemistry Department Sant Longowal Institute of Engineering and Technology Longowal 148106, Distt. Sangrur Punjab India
| | - Junaid Ur Rahim
- Medicinal Chemistry Division CSIR-Indian Institute of Integrative Medicine, Canal Road Jammu India
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad 201002- India
| | - Rajkishore Rai
- Medicinal Chemistry Division CSIR-Indian Institute of Integrative Medicine, Canal Road Jammu India
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad 201002- India
| | - Harish Kumar Chopra
- Chemistry Department Sant Longowal Institute of Engineering and Technology Longowal 148106, Distt. Sangrur Punjab India
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5
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Wu D, Ma C, Fan GC, Pan F, Tao Y, Kong Y. Recent advances of the ionic chiral selectors for chiral resolution by chromatography, spectroscopy and electrochemistry. J Sep Sci 2021; 45:325-337. [PMID: 34117714 DOI: 10.1002/jssc.202100334] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Revised: 06/08/2021] [Accepted: 06/08/2021] [Indexed: 01/06/2023]
Abstract
Ionic chiral selectors have been received much attention in the field of asymmetric catalysis, chiral recognition, and preparative separation. It has been shown that the addition of ionic chiral selectors can enhance the recognition efficiency dramatically due to the presence of multiple intermolecular interactions, including hydrogen bond, π-π interaction, van der Waals force, electrostatic ion-pairing interaction, and ionic-hydrogen bond. In the initial research stage of the ionic chiral selectors, most of work center on the application in chromatographic separation (capillary electrophoresis, high-performance liquid chromatography, and gas chromatography). Differently, more and more attention has been paid on the spectroscopy (nuclear magnetic resonance, fluorescence, ultraviolet and visible absorption spectrum, and circular dichroism spectrum) and electrochemistry in recent years. In this tutorial review as regards the ionic chiral selectors, we discuss in detail the structural features, properties, and their application in chromatography, spectroscopy, and electrochemistry.
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Affiliation(s)
- Datong Wu
- Jiangsu Key Laboratory of Advanced Materials and Technology, School of Petrochemical Engineering, Changzhou University, Changzhou, P. R. China
| | - Cong Ma
- Jiangsu Key Laboratory of Advanced Materials and Technology, School of Petrochemical Engineering, Changzhou University, Changzhou, P. R. China
| | - Gao-Chao Fan
- Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science, MOE, Shandong Key Laboratory of Biochemical Analysis, Qingdao University of Science and Technology, Qingdao, P. R. China
| | - Fei Pan
- Jiangsu Key Laboratory of Advanced Materials and Technology, School of Petrochemical Engineering, Changzhou University, Changzhou, P. R. China
| | - Yongxin Tao
- Jiangsu Key Laboratory of Advanced Materials and Technology, School of Petrochemical Engineering, Changzhou University, Changzhou, P. R. China
| | - Yong Kong
- Jiangsu Key Laboratory of Advanced Materials and Technology, School of Petrochemical Engineering, Changzhou University, Changzhou, P. R. China
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6
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Abstract
Rosy prospects of chiral membranes are proposed with novel and robust materials.
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Affiliation(s)
- Hongda Han
- School of Science
- Tianjin Key Laboratory of Molecular Optoelectronic Science
- Department of Chemistry
- Collaborative Innovation Center of Chemical Science and Engineering
- Tianjin University
| | - Wei Liu
- School of Science
- Tianjin Key Laboratory of Molecular Optoelectronic Science
- Department of Chemistry
- Collaborative Innovation Center of Chemical Science and Engineering
- Tianjin University
| | - Yin Xiao
- School of Chemical Engineering and Technology
- Tianjin Engineering Research Center of Functional Fine Chemicals
- Tianjin University
- Tianjin 300072
- P. R. China
| | - Xiaofei Ma
- School of Science
- Tianjin Key Laboratory of Molecular Optoelectronic Science
- Department of Chemistry
- Collaborative Innovation Center of Chemical Science and Engineering
- Tianjin University
| | - Yong Wang
- School of Science
- Tianjin Key Laboratory of Molecular Optoelectronic Science
- Department of Chemistry
- Collaborative Innovation Center of Chemical Science and Engineering
- Tianjin University
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Zeindlhofer V, Hudson P, Pálvölgyi ÁM, Welsch M, Almarashi M, Woodcock HL, Brooks B, Bica-Schröder K, Schröder C. Enantiomerization of Axially Chiral Biphenyls: Polarizable MD Simulations in Water and Butylmethylether. Int J Mol Sci 2020; 21:E6222. [PMID: 32872113 PMCID: PMC7503397 DOI: 10.3390/ijms21176222] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2020] [Revised: 08/20/2020] [Accepted: 08/25/2020] [Indexed: 01/14/2023] Open
Abstract
In this study, we investigate the influence of chiral and achiral cations on the enantiomerization of biphenylic anions in n-butylmethylether and water. In addition to the impact of the cations and solvent molecules on the free energy profile of rotation, we also explore if chirality transfer between a chiral cation and the biphenylic anion is possible, i.e., if pairing with a chiral cation can energetically favour one conformer of the anion via diastereomeric complex formation. The quantum-mechanical calculations are accompanied by polarizable MD simulations using umbrella sampling to study the impact of solvents of different polarity in more detail. We also discuss how accurate polarizable force fields for biphenylic anions can be constructed from quantum-mechanical reference data.
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Affiliation(s)
- Veronika Zeindlhofer
- Department of Computational Biological Chemistry, University of Vienna, Währingerstraße 17, 1090 Vienna, Austria; (V.Z.); (M.W.); (M.A.)
| | - Phillip Hudson
- Laboratory of Computational Biology, National Heart, Lung, and Blood Institute (NHLBI), National Institutes of Health (NIH), Bethesda, MD 20892, USA; (P.H.); (B.B.)
- Department of Chemistry, University of South Florida, Tampa, FL 33620, USA;
| | - Ádám Márk Pálvölgyi
- Institute of Applied Synthetic Chemistry, TU Wien, Getreidemarkt 9/163, 1060 Vienna, Austria; (Á.M.P.); (K.B.-S.)
| | - Matthias Welsch
- Department of Computational Biological Chemistry, University of Vienna, Währingerstraße 17, 1090 Vienna, Austria; (V.Z.); (M.W.); (M.A.)
| | - Mazin Almarashi
- Department of Computational Biological Chemistry, University of Vienna, Währingerstraße 17, 1090 Vienna, Austria; (V.Z.); (M.W.); (M.A.)
| | - H. Lee Woodcock
- Department of Chemistry, University of South Florida, Tampa, FL 33620, USA;
| | - Bernard Brooks
- Laboratory of Computational Biology, National Heart, Lung, and Blood Institute (NHLBI), National Institutes of Health (NIH), Bethesda, MD 20892, USA; (P.H.); (B.B.)
| | - Katharina Bica-Schröder
- Institute of Applied Synthetic Chemistry, TU Wien, Getreidemarkt 9/163, 1060 Vienna, Austria; (Á.M.P.); (K.B.-S.)
| | - Christian Schröder
- Department of Computational Biological Chemistry, University of Vienna, Währingerstraße 17, 1090 Vienna, Austria; (V.Z.); (M.W.); (M.A.)
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Nie L, Yohannes A, Yao S. Recent advances in the enantioseparation promoted by ionic liquids and their resolution mechanisms. J Chromatogr A 2020; 1626:461384. [PMID: 32797857 DOI: 10.1016/j.chroma.2020.461384] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Revised: 06/28/2020] [Accepted: 06/30/2020] [Indexed: 12/16/2022]
Abstract
More and more various chemical media are being applied in enantioseparation; among them, ionic liquids (ILs) have attracted the long-term attention in this decade as green designable solvents. This paper provides comprehensive overview for the applications of ILs in chiral extraction, gas chromatography, liquid chromatography, capillary electrophoresis and other techniques for enantioseparation. Additionally, the important resolution mechanisms based on ILs have also been summarized and discussed. This review focuses on the latest development of enantioseparation methods by using ILs in various modes, leading to meaningful and valuable information to related fields and thus promotes further research and application of reported methods.
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Affiliation(s)
- Lirong Nie
- School of Medical Instrument and Food Engineering, University of Shanghai for Science and Technology, 516 Jungong Road, Shanghai 200093, China
| | - Alula Yohannes
- School of Chemical Engineering, Sichuan University, No.24 South Section 1, Yihuan Road, Chengdu 610065, China
| | - Shun Yao
- School of Chemical Engineering, Sichuan University, No.24 South Section 1, Yihuan Road, Chengdu 610065, China.
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9
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Singh A, Kaur N, Kumar Chopra H. Chiral Recognition Methods in Analytical Chemistry: Role of the Chiral Ionic Liquids. Crit Rev Anal Chem 2019; 49:553-569. [DOI: 10.1080/10408347.2019.1565985] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Avtar Singh
- Department of Chemistry, Sant Longowal Institute of Engineering and Technology, Longowal, India
| | - Nirmaljeet Kaur
- Department of Chemistry, Sant Longowal Institute of Engineering and Technology, Longowal, India
| | - Harish Kumar Chopra
- Department of Chemistry, Sant Longowal Institute of Engineering and Technology, Longowal, India
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10
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Greño M, Marina ML, Castro-Puyana M. Enantioseparation by Capillary Electrophoresis Using Ionic Liquids as Chiral Selectors. Crit Rev Anal Chem 2018; 48:429-446. [PMID: 29641220 DOI: 10.1080/10408347.2018.1439365] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Capillary electrophoresis (CE) is one of the most widely employed analytical techniques to achieve enantiomeric separations. In spite of the fact that there are many chiral selectors commercially available to perform enantioseparations by CE, one of the most relevant topics in this field is the search for new selectors capable of providing high enantiomeric resolutions. Chiral ionic liquids (CILs) have interesting characteristics conferring them a high potential in chiral separations although only some of them are commercially available. The aim of this article is to review all the works published on the use of CILs as chiral selectors in the development of enantioselective methodologies by CE, covering the period from 2006 (when the first research work on this topic was published) to 2017. The use of CILs as sole chiral selectors, as chiral selectors in dual systems or as chiral ligands will be considered. This review also provides detailed analytical information on the experimental conditions used to carry out enantioseparations in different fields as well as on the separation mechanism involved.
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Affiliation(s)
- Maider Greño
- a Departamento de Química Analítica , Química Física e Ingeniería Química, Universidad de Alcalá , Alcalá de Henares, Madrid , Spain
| | - María Luisa Marina
- a Departamento de Química Analítica , Química Física e Ingeniería Química, Universidad de Alcalá , Alcalá de Henares, Madrid , Spain.,b Instituto de Investigación Química Andrés M. del Río, Universidad de Alcalá , Alcalá de Henares, Madrid , Spain
| | - María Castro-Puyana
- a Departamento de Química Analítica , Química Física e Ingeniería Química, Universidad de Alcalá , Alcalá de Henares, Madrid , Spain.,b Instituto de Investigación Química Andrés M. del Río, Universidad de Alcalá , Alcalá de Henares, Madrid , Spain
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11
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He S, He Y, Cheng L, Wu Y, Ke Y. Novel chiral ionic liquids stationary phases for the enantiomer separation of chiral acid by high-performance liquid chromatography. Chirality 2018; 30:670-679. [PMID: 29476561 DOI: 10.1002/chir.22839] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2017] [Revised: 12/08/2017] [Accepted: 01/05/2018] [Indexed: 11/06/2022]
Abstract
Novel chiral ionic liquid stationary phases based on chiral imidazolium were prepared. The ionic liquid chiral selector was synthesized by ring opening of cyclohexene oxide with imidazole or 5,6-dimethylbenzimidazole, and then chemically modified by different substitute groups. Chiral stationary phases were prepared by bonding to the surface of silica sphere through thioene "click" reaction. Their enantioselective separations of chiral acids were evaluated by high-performance liquid chromatography. The retention of acid sample was related to the counterion concentration and showed a typical ion exchange process. The chiral separation abilities of chiral stationary phases were greatly influenced by the substituent group on the chiral selector as well as the mobile phase, which indicated that, besides ion exchange, other interactions such as steric hindrance, π-π interaction, and hydrogen bonding are important for the enantioselectivity. In this report, the influence of bulk solvent components, the effects of varying concentration, and the type of the counterion as well as the proportion of acid and basic additives were investigated in detail.
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Affiliation(s)
- Shanshan He
- Engineering Research Center of Pharmaceutical Process Chemistry, School of Pharmacy, Ministry of Education, East China University of Science and Technology, Shanghai, China
| | - Yunchao He
- Engineering Research Center of Pharmaceutical Process Chemistry, School of Pharmacy, Ministry of Education, East China University of Science and Technology, Shanghai, China
| | - Lingping Cheng
- Engineering Research Center of Pharmaceutical Process Chemistry, School of Pharmacy, Ministry of Education, East China University of Science and Technology, Shanghai, China
| | - Yaling Wu
- Engineering Research Center of Pharmaceutical Process Chemistry, School of Pharmacy, Ministry of Education, East China University of Science and Technology, Shanghai, China
| | - Yanxiong Ke
- Engineering Research Center of Pharmaceutical Process Chemistry, School of Pharmacy, Ministry of Education, East China University of Science and Technology, Shanghai, China
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12
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Huang XY, Pei D, Liu JF, Di DL. A review on chiral separation by counter-current chromatography: Development, applications and future outlook. J Chromatogr A 2018; 1531:1-12. [DOI: 10.1016/j.chroma.2017.10.073] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2017] [Revised: 10/27/2017] [Accepted: 10/29/2017] [Indexed: 12/21/2022]
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13
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Izák P, Bobbink FD, Hulla M, Klepic M, Friess K, Hovorka Š, Dyson PJ. Catalytic Ionic-Liquid Membranes: The Convergence of Ionic-Liquid Catalysis and Ionic-Liquid Membrane Separation Technologies. Chempluschem 2017; 83:7-18. [PMID: 31957320 DOI: 10.1002/cplu.201700293] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2017] [Revised: 08/24/2017] [Indexed: 12/17/2022]
Abstract
Membrane technologies enable the facile separation of complex mixtures of gases, vapours, liquids and/or solids under mild conditions. Simultaneous chemical transformations can also be achieved in membranes by using catalytically active membrane materials or embedded catalysts, in so-called membrane reactors. A particular class of membranes containing or composed of ionic liquids (ILs) or polymeric ionic liquids (pILs) have recently emerged. These membranes often exhibit superior transport and separation properties to those of classical polymeric membranes. ILs and pILs have also been extensively studied as separation solvents, catalysts and co-catalysts in similar applications for which membranes are employed. In this review, after introducing ILs and their applications in catalysis, catalytic membranes and recent advances in membrane separation processes based on ILs are described. Finally, the nascent concept of catalytic IL membranes is highlighted, in which catalytically active ILs/pILs are incorporated into membrane technologies to act as a catalytic separation layer.
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Affiliation(s)
- Pavel Izák
- Institute of Chemical Process Fundamentals of the Czech Academy of Science, v.v.i. Rozvojová 135, 165 02, Prague 6, Czech Republic
| | - Felix D Bobbink
- Institute of Chemical Sciences and Engineering, École Polytechnique Fédérale de Lausanne (EPFL), CH 1015, Lausanne, Switzerland
| | - Martin Hulla
- Institute of Chemical Sciences and Engineering, École Polytechnique Fédérale de Lausanne (EPFL), CH 1015, Lausanne, Switzerland
| | - Martina Klepic
- University of Chemistry and Technology, Technická 5, 166 28, Prague, Czech Republic
| | - Karel Friess
- University of Chemistry and Technology, Technická 5, 166 28, Prague, Czech Republic
| | - Štěpán Hovorka
- University of Chemistry and Technology, Technická 5, 166 28, Prague, Czech Republic
| | - Paul J Dyson
- Institute of Chemical Sciences and Engineering, École Polytechnique Fédérale de Lausanne (EPFL), CH 1015, Lausanne, Switzerland
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14
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Determination of ᴅ-phenylglycine in the presence of its ʟ-enantiomer using a turn-on fluorescent nano-chemosensor. Talanta 2017; 162:547-551. [DOI: 10.1016/j.talanta.2016.10.054] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2016] [Revised: 10/10/2016] [Accepted: 10/12/2016] [Indexed: 11/17/2022]
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15
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Cai P, Wu D, Zhao X, Pan Y. Fluorescence recognition of chiral amino alcohols by using a novel ionic liquid sensor. Analyst 2017; 142:2961-2966. [DOI: 10.1039/c7an00645d] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
A novel task-specific ionic liquid derived from l-phenylalaninol was prepared as an enantioselective fluorescent sensor for the first time.
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Affiliation(s)
- Pengfei Cai
- Department of Chemistry
- Zhejiang University
- Hangzhou 310027
- China
| | - Datong Wu
- Department of Chemistry
- Zhejiang University
- Hangzhou 310027
- China
| | - Xiaoyong Zhao
- Department of Chemistry
- Zhejiang University
- Hangzhou 310027
- China
| | - Yuanjiang Pan
- Department of Chemistry
- Zhejiang University
- Hangzhou 310027
- China
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16
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Noguchi T, Li C, Sasaki D, Yamada K, Saigo K, Ishida Y. Cyclophane-shaped ionic liquids with planar chirality: effects of bridge unit on thermal properties and chirality-recognition ability. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.01.058] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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17
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Vasiloiu M, Cervenka I, Gaertner P, Weil M, Schröder C, Bica K. Amino alcohol-derived chiral ionic liquids: structural investigations toward chiral recognition. ACTA ACUST UNITED AC 2015. [DOI: 10.1016/j.tetasy.2015.08.009] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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18
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Dinis TBV, Passos H, Lima DLD, Esteves VI, Coutinho JAP, Freire MG. One-step extraction and concentration of estrogens for an adequate monitoring of wastewater using ionic-liquid-based aqueous biphasic systems. GREEN CHEMISTRY : AN INTERNATIONAL JOURNAL AND GREEN CHEMISTRY RESOURCE : GC 2015; 17:2570-2579. [PMID: 26379470 PMCID: PMC4568319 DOI: 10.1039/c5gc00077g] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
Ethinylestradiol (EE2) is a synthetic hormone that has been recognized as one of the most prominent endocrine disruptors found in the aqueous environment. Nevertheless, the low content of EE2 in wastewater makes its identification/quantification unfeasible - a major drawback for the evaluation of its persistence and environmental impact. In this context, a novel extraction/concentration method for EE2 from wastewater is proposed here based on aqueous biphasic systems composed of ionic liquids (ILs). Aqueous biphasic systems formed by several hydrophilic ILs and KNaC4H4O6 were initially screened and optimized, with extraction efficiencies of EE2 for the IL-rich phase ranging between 92 and 100%. Remarkable results were obtained with systems that allow the complete extraction of EE2 in a single-step, and without loss of EE2 or the saturation of the extractive phase. Further, the concentration factors of EE2 attainable with these systems were investigated by a suitable manipulation of the composition of the phase-forming components and the corresponding volumes of the coexisting phases. An outstanding concentration of EE2 up to 1000-fold (from ng L-1 to μg L-1) in a single extraction and concentration step was achieved for the first time with IL-based aqueous biphasic systems. These systems are straightforwardly envisaged for the monitoring of wastewater as one-step extraction and concentration routes for a wide array of endocrine disrupting chemicals while allowing an adequate evaluation of their environmental impact.
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Affiliation(s)
- Teresa B. V. Dinis
- CICECO - Aveiro Institute of Materials, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Helena Passos
- CICECO - Aveiro Institute of Materials, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Diana L. D. Lima
- Chemistry Department, CESAM, University of Aveiro, 3810-193 Aveiro, Portugal
- Department of Complementary Sciences, Superior School of Health Technology of Coimbra, 3040-854 Coimbra, Portugal
| | - Valdemar I. Esteves
- Chemistry Department, CESAM, University of Aveiro, 3810-193 Aveiro, Portugal
| | - João A. P. Coutinho
- CICECO - Aveiro Institute of Materials, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Mara G. Freire
- CICECO - Aveiro Institute of Materials, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal
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19
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Afkhami A, Kafrashi F, Ahmadi M, Madrakian T. A new chiral electrochemical sensor for the enantioselective recognition of naproxen enantiomers using l-cysteine self-assembled over gold nanoparticles on a gold electrode. RSC Adv 2015. [DOI: 10.1039/c5ra07396k] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A chiral electrochemical sensor for analyzing the enantiomeric composition of chiral compounds is reported.
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Affiliation(s)
- Abbas Afkhami
- Faculty of Chemistry
- Bu Ali Sina University
- Hamedan
- Iran
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20
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Kapnissi-Christodoulou CP, Stavrou IJ, Mavroudi MC. Chiral ionic liquids in chromatographic and electrophoretic separations. J Chromatogr A 2014; 1363:2-10. [DOI: 10.1016/j.chroma.2014.05.059] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2014] [Revised: 05/17/2014] [Accepted: 05/20/2014] [Indexed: 02/07/2023]
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21
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Qing H, Jiang X, Yu J. Separation of Tryptophan Enantiomers by Ligand-Exchange Chromatography With Novel Chiral Ionic Liquids Ligand. Chirality 2014; 26:160-5. [DOI: 10.1002/chir.22286] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2013] [Accepted: 11/18/2013] [Indexed: 01/31/2023]
Affiliation(s)
- Haiqun Qing
- School of Chemistry and Chemical Engineering; Central South University; Changsha China
| | - Xinyu Jiang
- School of Chemistry and Chemical Engineering; Central South University; Changsha China
- Key Laboratory of Resources Chemistry of Nonferrous Metals, Ministry of Education; Central South University; Changsha China
| | - Jingang Yu
- School of Chemistry and Chemical Engineering; Central South University; Changsha China
- Key Laboratory of Resources Chemistry of Nonferrous Metals, Ministry of Education; Central South University; Changsha China
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22
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Effect of Ionic Liquids on Preparative Separation of Flavonoid Compounds in the Extract fromBrassica napus L.Pollen using High-Performance Counter-Current Chromatography. SEP SCI TECHNOL 2013. [DOI: 10.1080/01496395.2013.804558] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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23
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Trojanowicz M, Kaniewska M. Flow methods in chiral analysis. Anal Chim Acta 2013; 801:59-69. [DOI: 10.1016/j.aca.2013.09.025] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2013] [Revised: 08/31/2013] [Accepted: 09/10/2013] [Indexed: 11/30/2022]
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24
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Meng H, Li S, Xiao L, Li C. Functionalized assembly of solid membranes for chiral separation using polyelectrolytes and chiral ionic liquid. AIChE J 2013. [DOI: 10.1002/aic.14227] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Hong Meng
- College of Chemical Engineering; Beijing University of Chemical Technology; Beijing 100029 P.R.China
| | - Sumin Li
- College of Chemical Engineering; Beijing University of Chemical Technology; Beijing 100029 P.R.China
| | - Ling Xiao
- College of Chemical Engineering; Beijing University of Chemical Technology; Beijing 100029 P.R.China
| | - Chunxi Li
- College of Chemical Engineering; Beijing University of Chemical Technology; Beijing 100029 P.R.China
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25
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A novel methodology for analysis of enantiomers through determination of their critical micelle concentrations using spectrophotometric method. J Pharm Biomed Anal 2013; 83:96-100. [DOI: 10.1016/j.jpba.2013.04.034] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2012] [Revised: 04/10/2013] [Accepted: 04/17/2013] [Indexed: 11/23/2022]
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26
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Jiao L, Deng Q, Wang Y, Li H. Determination of Enantiomeric Composition of Tryptophan by Fluorescence Spectroscopy Combined with Principal Component Regression. ANAL LETT 2013. [DOI: 10.1080/00032719.2012.733901] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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27
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Duri S, El-Zahab B, Tran CD. Polysaccharide Ecocomposite Materials: Synthesis, Characterization and Application for Removal of Pollutants and Bacteria. ACTA ACUST UNITED AC 2013. [PMID: 26203313 DOI: 10.1149/05011.0573ecst] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
A novel, simple and totally recyclable method has been developed for the synthesis of nontoxic, biocompatible and biodegradable composite materials from cellulose and chitosan. In this method, [BMIm+Cl-], an ionic liquid (IL), was used as a solvent to dissolve and synthesize the [CEL+CS] composite materials. Since the IL can be removed from the materials by washing them with water, and recovered from the washed solution, the method is totally recyclable. XRD, FTIR, NIR and SEM were used to characterize the materials and to confirm that CEL and CS were successfully regenerated by the method without any chemical transformation. More importantly, we have successfully demonstrated that [CEL+CS] material can serve as an effective adsorbent for removal of various endocrine disruptors including polychlorophenols and bisphenol A. This is because the composites have combined advantages of their components, namely superior chemical stability and mechanical stability (from CEL) and excellent adsorption capability for pollutants (from CS).
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Affiliation(s)
- Simon Duri
- Department of Chemistry, Marquette University Milwaukee, WI 53201-1881
| | - Bilal El-Zahab
- Department of Chemistry, Marquette University Milwaukee, WI 53201-1881
| | - Chieu D Tran
- Department of Chemistry, Marquette University Milwaukee, WI 53201-1881
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28
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Jiang H, Zhao F, Wang J, Liu Z, Ren J, Liu R, Shang J, Hu Y. Molecular simulations of imidazolium-based ionic liquids with [l-lactate]− anion and the binary mixture of [bmim][l-lactate] and 1-octanol. J Mol Liq 2012. [DOI: 10.1016/j.molliq.2011.10.009] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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29
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Payagala T, Armstrong DW. Chiral ionic liquids: a compendium of syntheses and applications (2005-2012). Chirality 2011; 24:17-53. [PMID: 22144292 DOI: 10.1002/chir.21975] [Citation(s) in RCA: 109] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2011] [Accepted: 09/30/2011] [Indexed: 11/07/2022]
Abstract
In recent years, the field of chiral ionic liquids (CILs) has undergone exponential growth. As the technology has advanced, new ways of synthesizing stable and structurally diverse ionic liquids have been established. This has led to heretofore unknown applications of CILs as well as in improving efficiency of previously identified applications. In this review article we have compiled a comprehensive database containing structures and physical properties of notable CILs that have been synthesized during the last 6 years. Their applications in the fields of asymmetric organic synthesis, spectroscopy, and chromatography are also illustrated. This is an expansion of our previous review, which covered the literature before 2005.
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Affiliation(s)
- Tharanga Payagala
- Department of Chemistry and Biochemistry, University of Texas at Arlington, Arlington, Texas 76019, USA
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30
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Tang F, Zhang Q, Ren D, Nie Z, Liu Q, Yao S. Functional amino acid ionic liquids as solvent and selector in chiral extraction. J Chromatogr A 2011; 1217:4669-74. [PMID: 20965081 DOI: 10.1016/j.chroma.2010.05.013] [Citation(s) in RCA: 78] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2009] [Revised: 05/03/2010] [Accepted: 05/07/2010] [Indexed: 11/19/2022]
Abstract
Amino acid ionic liquids (AAILs) have received great attention due to their potentials in catalysis and separations. In this work, functional AAILs were used as solvent and selector in chiral liquid–liquid extraction for the first time. The AAILs have shown distinct enantioselectivity in amino acid extraction. Using these functional AAILs as acceptor phase and ethylacetate as donor phase, more L-enantiomer of amino acid was extracted into the ionic liquid phase than that of D-enantiomer. The influencing factors, including AAILs structure, copper ion concentration, organic phase and amino acid concentration, were investigated. We found that the enantioselective enrichment of racemic amino acids was achieved through a chiral ligand-exchange mechanism. The enantioselectivity of single-step extraction was up to enantiomeric excess value of 50.6%. Moreover, the functional AAILs were found to be efficient extraction solvents for amino acids. The logarithm of distribution coefficient for L-Phe was in the range of 3.4–3.6 in the ionic liquid–ethylacetate two-phase system. This liquid–liquid extraction approach may extend the application of ionic liquids in chiral separations.
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Affiliation(s)
- Fei Tang
- State Key Lab of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, Hunan, China.
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31
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De Rooy SL, Li M, Bwambok DK, El-Zahab B, Challa S, Warner IM. Ephedrinium-based protic chiral ionic liquids for enantiomeric recognition. Chirality 2010; 23:54-62. [DOI: 10.1002/chir.20920] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2009] [Accepted: 07/14/2010] [Indexed: 11/11/2022]
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32
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Abstract
AbstractIn this study, spectroscopic investigation of chiral and achiral room temperature ionic liquids is achieved. New ionic liquids were prepared via metathesis, accomplished by the reaction of either L-phenylalanine ethyl ester hydrochloride, chlorpromazine hydrochloride or 1,10-Phenanthroline monohydrate hydrochloride with lithium bis(trifluoromethane) sulfonamide in water. The resulting ionic liquids were produced in high yield and purity. The results obtained by use of 1H NMR and IR experiments were in very good agreement with the chemical structures of the synthesized ionic liquids. In addition, the results of thermal gravimetric analysis suggested that these ionic liquids have good thermal stability. UV-Vis and fluorescence spectroscopy measurements indicated that these ionic liquids are strongly optically absorbent and fluorescent. Lastly, time-based fluorescence steady-state measurements demonstrated the high photostability of these ionic liquids.
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33
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Bwambok DK, Challa SK, Lowry M, Warner IM. Amino Acid-Based Fluorescent Chiral Ionic Liquid for Enantiomeric Recognition. Anal Chem 2010; 82:5028-37. [DOI: 10.1021/ac9027774] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- David K. Bwambok
- Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803
| | - Santhosh K. Challa
- Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803
| | - Mark Lowry
- Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803
| | - Isiah M. Warner
- Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803
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34
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Development of a Universal Method Based on Ionic Liquids for Determination of Enantiomeric Compositions of Pharmaceutical Products. ACTA ACUST UNITED AC 2010. [DOI: 10.1021/bk-2010-1038.ch004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
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35
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Ionic liquids in analytical chemistry. Anal Chim Acta 2010; 661:1-16. [DOI: 10.1016/j.aca.2009.12.007] [Citation(s) in RCA: 587] [Impact Index Per Article: 41.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2009] [Revised: 12/04/2009] [Accepted: 12/09/2009] [Indexed: 11/23/2022]
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36
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Hu Y, Jiang H, Zhang X, Liu Z, Ren J, Liu R. United-atom force field for [emim][lactate] and molecular simulation of mixture of [emim][lactate] and water. ACTA ACUST UNITED AC 2009. [DOI: 10.1016/j.theochem.2009.08.028] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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37
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Li M, Gardella J, Bwambok DK, El-Zahab B, de Rooy S, Cole M, Lowry M, Warner IM. Combinatorial Approach to Enantiomeric Discrimination: Synthesis and 19F NMR Screening of a Chiral Ionic Liquid-Modified Silane Library. ACTA ACUST UNITED AC 2009; 11:1105-14. [DOI: 10.1021/cc900113p] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Min Li
- Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803, and Department of Chemistry and Physics, Louisiana State University—Shreveport, Shreveport, Louisiana 71105
| | - Jerry Gardella
- Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803, and Department of Chemistry and Physics, Louisiana State University—Shreveport, Shreveport, Louisiana 71105
| | - David K. Bwambok
- Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803, and Department of Chemistry and Physics, Louisiana State University—Shreveport, Shreveport, Louisiana 71105
| | - Bilal El-Zahab
- Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803, and Department of Chemistry and Physics, Louisiana State University—Shreveport, Shreveport, Louisiana 71105
| | - Sergio de Rooy
- Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803, and Department of Chemistry and Physics, Louisiana State University—Shreveport, Shreveport, Louisiana 71105
| | - Marsha Cole
- Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803, and Department of Chemistry and Physics, Louisiana State University—Shreveport, Shreveport, Louisiana 71105
| | - Mark Lowry
- Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803, and Department of Chemistry and Physics, Louisiana State University—Shreveport, Shreveport, Louisiana 71105
| | - Isiah M. Warner
- Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803, and Department of Chemistry and Physics, Louisiana State University—Shreveport, Shreveport, Louisiana 71105
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38
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Luo S, Zhang L, Cheng JP. Functionalized Chiral Ionic Liquids: A New Type of Asymmetric Organocatalysts and Nonclassical Chiral Ligands. Chem Asian J 2009; 4:1184-95. [DOI: 10.1002/asia.200900080] [Citation(s) in RCA: 82] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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39
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Duri S, Molthen RC, Tran CD. Discriminating pulmonary hypertension caused by monocrotaline toxicity from chronic hypoxia by near-infrared spectroscopy and multivariate methods of analysis. Anal Biochem 2009; 390:155-64. [DOI: 10.1016/j.ab.2009.04.028] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2009] [Revised: 04/14/2009] [Accepted: 04/20/2009] [Indexed: 10/20/2022]
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40
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Multicomponent analyses of chiral samples by use of regression analysis of UV-visible spectra of cyclodextrin guest-host complexes. Anal Bioanal Chem 2009; 394:1645-53. [PMID: 19484461 DOI: 10.1007/s00216-009-2853-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2009] [Revised: 05/08/2009] [Accepted: 05/13/2009] [Indexed: 10/20/2022]
Abstract
We report the first combined use of analytical spectroscopy, guest-host chemistry, and multivariate regression analysis for determination of enantiometric composition of multicomponent samples of chiral analytes. Sample solutions containing multicomponent analytes of ephedrine, tryptophan, propranolol, and proline of varying enantiomeric composition with beta-cyclodextrin (BCD) or methyl-beta-cyclodextrin (Me-BCD) as chiral host molecules were investigated using ultraviolet (UV)-visible spectroscopy. The interactions of enantiomers of chiral analytes with chiral hosts resulted in the formation of transient diastereomeric inclusion complexes with varying spectral properties. Multivariate analysis using partial-least-square (PLS) regression was used to correlate subtle changes in the UV-visible spectra of the guest-host complexes with the enantiomeric composition of the calibration samples. These PLS regressions were carefully optimized and then used to predict the enantiomeric composition of multicomponent chiral analytes of validation samples. The results of these validation studies demonstrate the predictive ability of the regression models for determination of future enantiomeric composition of samples. The accuracy of the models to correctly predict the enantiomeric composition of samples, evaluated by use of the root mean square percent relative error (RMS%RE) was analyte and chiral host dependent. In general, better prediction of enantiomeric composition of samples and low RMS%RE values were obtained when Me-BCD was used as the chiral host. The analyses procedure reported here is simple, rapid, and inexpensive. In addition, this approach does not require prior separation of chiral analytes, thus reducing analysis time and eliminating the need for expensive chiral columns.
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41
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Preparation of ionic liquid based solid-phase microextraction fiber and its application to forensic determination of methamphetamine and amphetamine in human urine. J Chromatogr A 2009; 1216:4824-30. [PMID: 19426983 DOI: 10.1016/j.chroma.2009.04.028] [Citation(s) in RCA: 113] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2009] [Revised: 04/08/2009] [Accepted: 04/10/2009] [Indexed: 11/23/2022]
Abstract
A new solid-phase microextraction (SPME) procedure using an ionic liquid (IL) has been developed. Reusable IL-based SPME fiber was prepared for the first time by fixing IL through cross-linkage of IL impregnated silicone elastomer on the surface of a fused silica fiber. 1-Ethoxyethyl-3-methylimidazloium bis(trifluoromethane) sulfonylimide ([EeMim][NTf(2)]) ionic liquid was employed as a demonstration and the prepared fiber was applied to the forensic headspace determination of methamphetamine (MAP) and amphetamine (AP) in human urine samples. Important extraction parameters including the concentration of salt and base in sample matrix, extraction temperature and extraction time were investigated and optimized. Combined with gas chromatography/mass spectrometry (GC/MS) working in selected ion monitoring (SIM) mode, the new method showed good linearity in the range of 20-1500 microg L(-1), good repeatability (RSD<7.5% for MAP, and <11.5% for AP, n=6), and low detection limits (0.1 microg L(-1) for MAP and 0.5 microg L(-1) for AP). Feasibility of the method was evaluated by analyzing human urine samples. Although IL-based SPME is still at the beginning of its development stage, the results obtained by this work showed that it is a promising simple, fast and sensitive sample preparation method.
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42
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Li M, De Rooy SL, Bwambok DK, El-Zahab B, DiTusa JF, Warner IM. Magnetic chiral ionic liquids derived from amino acids. Chem Commun (Camb) 2009:6922-4. [DOI: 10.1039/b917683g] [Citation(s) in RCA: 79] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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43
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Tran CD, Mejac I, Rebek J, Hooley RJ. Gas Chromatographic Separation of Isotopic Molecules Using a Cavitand-Impregnated Ionic Liquid Stationary Phase. Anal Chem 2008; 81:1244-54. [DOI: 10.1021/ac8021423] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Chieu D. Tran
- Department of Chemistry, Marquette University, P.O. Box 1881, Milwaukee, Wisconsin 53201, and Department of Chemistry and the Skaggs Institute for Chemical Biology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037
| | - Irena Mejac
- Department of Chemistry, Marquette University, P.O. Box 1881, Milwaukee, Wisconsin 53201, and Department of Chemistry and the Skaggs Institute for Chemical Biology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037
| | - Julius Rebek
- Department of Chemistry, Marquette University, P.O. Box 1881, Milwaukee, Wisconsin 53201, and Department of Chemistry and the Skaggs Institute for Chemical Biology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037
| | - Richard J. Hooley
- Department of Chemistry, Marquette University, P.O. Box 1881, Milwaukee, Wisconsin 53201, and Department of Chemistry and the Skaggs Institute for Chemical Biology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037
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44
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Ionic liquids in sample preparation. Anal Bioanal Chem 2008; 393:871-83. [DOI: 10.1007/s00216-008-2445-6] [Citation(s) in RCA: 131] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2008] [Revised: 09/25/2008] [Accepted: 09/30/2008] [Indexed: 10/21/2022]
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45
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Tran CD, Mejac I. Chiral ionic liquids for enantioseparation of pharmaceutical products by capillary electrophoresis. J Chromatogr A 2008; 1204:204-9. [DOI: 10.1016/j.chroma.2008.04.013] [Citation(s) in RCA: 80] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2007] [Revised: 02/26/2008] [Accepted: 04/08/2008] [Indexed: 11/16/2022]
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46
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Affiliation(s)
- Katharina Bica
- Institute of Applied Synthetic Chemistry, Vienna University of Technology, Getreidemarkt 9/163, 1060 Vienna, Austria, Fax: +43‐1‐58801‐15499
| | - Peter Gaertner
- Institute of Applied Synthetic Chemistry, Vienna University of Technology, Getreidemarkt 9/163, 1060 Vienna, Austria, Fax: +43‐1‐58801‐15499
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47
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Reversed-phase liquid chromatography analysis of alkyl-imidazolium ionic liquids. J Chromatogr A 2008; 1189:476-82. [DOI: 10.1016/j.chroma.2007.10.046] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2007] [Revised: 09/26/2007] [Accepted: 10/09/2007] [Indexed: 11/22/2022]
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48
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Bwambok DK, Marwani HM, Fernand VE, Fakayode SO, Lowry M, Negulescu I, Strongin RM, Warner IM. Synthesis and characterization of novel chiral ionic liquids and investigation of their enantiomeric recognition properties. Chirality 2008; 20:151-8. [PMID: 18092298 DOI: 10.1002/chir.20517] [Citation(s) in RCA: 70] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
We report the synthesis and characterization of amino acid ester based chiral ionic liquids, derived from L- and D-alanine tert butyl ester chloride. The synthesis was accomplished via an anion metathesis reaction between commercially available L- and D-alanine tert butyl ester chloride using a variety of counterions such as lithium bis (trifluoromethane) sulfonimide, silver nitrate, silver lactate, and silver tetrafluoroborate. Both enantiomeric forms were obtained as confirmed by bands of opposite sign in the circular dichroism spectra. The L- and D-alanine tert butyl ester bis (trifluoromethane) sulfonimide were obtained as liquids at room temperature and intriguingly exhibited the highest thermal stability (up to 263 degrees C). In addition, the ionic liquids demonstrated enantiomeric recognition ability as evidenced by splitting of racemic Mosher's sodium salt signal using a liquid state (19)F nuclear magnetic resonance (NMR) and fluorescence spectroscopy. The L- and D-alanine tert butyl ester chloride resulted in solid salts with nitrate, lactate, and tetrafluoroborate anions. This illustrates the previously observed tunability of ionic liquid synthesis, resulting in ionic liquids of varying properties as a function of varying the anion.
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Affiliation(s)
- David K Bwambok
- Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana, USA
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49
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Tran CD, Challa S. Fullerene-impregnated ionic liquid stationary phases for gas chromatography. Analyst 2008; 133:455-64. [DOI: 10.1039/b716443b] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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50
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Abstract
Herein, we report an approach for protein detection enhanced by ionic liquid (IL) selectors in capillary electrophoresis (CE), with avidin as a model protein. Hydrophilic ILs were added into the running buffer of CE and acted as selectors for sample injection, enriching the positive target and excluding the negative from the capillary. When using 3 % (v/v) IL selector, the detection sensitivity of avidin was improved by over one order of magnitude, while the interference from protein adsorption was effectively avoided, even in an uncoated capillary. The electrochemiluminescence method was initially used for IL-based CE with low noise that was independent of the IL concentration, making ILs almost transparent as additives in the electrophoresis buffer.
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Affiliation(s)
- Tao Li
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, China
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