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Eftekhari-Sis B, Amirpour N, Naderahmadian A, Zirak M, Janeta M, Mahmoudi G. Amphiphilic Azo-Functionalized Polyhedral Oligomeric Silsesquioxane; Synthesis and Photo-Switched Efficient Phase Transfer via Host-Guest Encapsulation. Chempluschem 2024; 89:e202300628. [PMID: 38153180 DOI: 10.1002/cplu.202300628] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Revised: 12/07/2023] [Accepted: 12/28/2023] [Indexed: 12/29/2023]
Abstract
A new amphiphilic azo-functionalized polyhedral oligomeric silsesquioxane (POSS) derivative was synthesized by functionalizing octa(3-aminopropyl)silsesquioxane (OAS-POSS) with 4-((4-(dodecyloxy)phenyl)diazenyl)benzoic acid, affording a hydrophilic amino POSS head and hydrophobic dodecyl tail with a diphenyl-azo connector. Prepared amphiphilic azo-functionalized POSS (azo-POSS) exhibited high ability for encapsulation and transferring cationic dyes into the organic phase by vigorously mixing with aqueous solutions of each dye. The photo-controlled encapsulating properties of the synthesized phase transfer reagent was studied using cationic dyes, such as methylene blue (MB), crystal violet (CV) and thymol blue in acidic conditions. Results showed more than 95 % encapsulation of MB. However, no considerable encapsulation was shown in the case of anionic dyes such as eriochrome black T (EBT) and thymol blue in alkaline solutions. By trans/cis isomerization of the azo moiety of the phase transfer reagent by UV irradiation (365 nm), the amount of dye encapsulation was decreased, which could be attributed to the formation of cis isomer that led to the folding of the dodecyl alkyl tail on the POSS moiety, and therefore prevent to lay the 3-aminopropyl moieties of POSS head to the water/DCM interface to adsorb and encapsulate MB molecules.
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Affiliation(s)
- Bagher Eftekhari-Sis
- Department of Chemistry, University of Maragheh, Golshahr, P.O.Box, 55181-83111, Maragheh, Iran
| | - Nasim Amirpour
- Department of Chemistry, University of Maragheh, Golshahr, P.O.Box, 55181-83111, Maragheh, Iran
| | - Aylar Naderahmadian
- Department of Chemistry, University of Maragheh, Golshahr, P.O.Box, 55181-83111, Maragheh, Iran
| | - Maryam Zirak
- Department of Chemistry, Payame Noor University, Tehran, Iran
| | - Mateusz Janeta
- Faculty of Chemistry, University of Wrocław F., Joliot-Curie 14, 50-383, Wrocław
| | - Ghodrat Mahmoudi
- Department of Chemistry, University of Maragheh, Golshahr, P.O.Box, 55181-83111, Maragheh, Iran
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Kowalewska A, Majewska-Smolarek K. Hybrid Perovskite-Based Materials Modified with Polyhedral Silsesquioxanes-Structure and Properties. MATERIALS (BASEL, SWITZERLAND) 2023; 16:6531. [PMID: 37834668 PMCID: PMC10573911 DOI: 10.3390/ma16196531] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Revised: 09/23/2023] [Accepted: 09/28/2023] [Indexed: 10/15/2023]
Abstract
Polyhedral oligomeric silsesquioxanes (POSS) and hybrid organo-halide perovskites are two important types of hybrid nanoscale frameworks with great potential in materials chemistry. Both are currently under intensive investigation for a wide range of possible applications. Recent results suggest that POSS can be attractive passivating and structure-controlling agents for perovskite materials. In this review, we present the importance of POSS in engineering the structures of inorganic cesium-halide perovskites CsPbX3 (X = Cl, Br, I) to create a new class of hybrid derivatives with improved properties. The combination of these two components can be an effective strategy for controlling the perovskite crystallization process. In addition, passivation of surface defects/bulk and the engineering of energy and optoelectronic properties of perovskite-based materials can be achieved following this method. In this minireview, we summarized the existing literature reports on the structural specificity and properties of hybrid POSS perovskites.
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Affiliation(s)
- Anna Kowalewska
- Centre of Molecular and Macromolecular Studies, Polish Academy of Sciences, Sienkiewicza 112, 90-363 Łódź, Poland;
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3
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Wytrych P, Utko J, Stefanski M, Kłak J, Lis T, John Ł. Synthesis, Crystal Structures, and Optical and Magnetic Properties of Samarium, Terbium, and Erbium Coordination Entities Containing Mono-Substituted Imine Silsesquioxane Ligands. Inorg Chem 2023; 62:2913-2923. [PMID: 36716237 PMCID: PMC9930112 DOI: 10.1021/acs.inorgchem.2c04371] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Mono-substituted cage-like silsesquioxanes of the T8-type can play the role of potential ligands in the coordination chemistry. In this paper, we report on imine derivatives as ligands for samarium, terbium, and erbium cations and discuss their efficient synthesis, crystal structures, and magnetic and optical properties. X-ray analysis of the lanthanide coordination entities [MCl3(POSS)3]·2THF [M = Er3+ (3), Tb3+ (4), Sm3+ (5)] showed that all three compounds crystallize in the same space group with similar lattice parameters. All compounds contain an octahedrally coordinated metal atom, and additionally, 3 and 5 structures are strictly isomorphous. However, surprisingly, there are two different molecules in the crystal structure of the terbium coordination entity 4, monomer (sof 65%) and dimer (sof 35%), with one and two metal centers. Absorption measurements of the investigated materials recorded at 300 K showed that regardless of the lanthanide involved, their energy band gap equals 2.7 eV. Moreover, the analogues containing Tb3+ and Sm3+ exhibit luminescence typical of these rare earth ions in the visible and infrared spectral range, while the compound with Er3+ does not generate any emission. Direct current variable-temperature magnetic susceptibility measurements on polycrystalline samples of 3-5 were performed between 1.8 and 300 K. The magnetic properties of 3 and 4 are dominated by the crystal field effect on the Er3+ and Tb3+ ions, respectively, hiding the magnetic influence between the magnetic cations of adjacent molecules. Complex 5 exhibits a nature typical for the paramagnetism of the samarium(III) cation.
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Affiliation(s)
- Patrycja Wytrych
- Faculty
of Chemistry, University of Wrocław, 14 F. Joliot-Curie, 50-383Wrocław, Poland
| | - Józef Utko
- Faculty
of Chemistry, University of Wrocław, 14 F. Joliot-Curie, 50-383Wrocław, Poland
| | - Mariusz Stefanski
- Institute
of Low Temperature and Structure Research, Polish Academy of Sciences, 2 Okólna, 50-422Wrocław, Poland
| | - Julia Kłak
- Faculty
of Chemistry, University of Wrocław, 14 F. Joliot-Curie, 50-383Wrocław, Poland
| | - Tadeusz Lis
- Faculty
of Chemistry, University of Wrocław, 14 F. Joliot-Curie, 50-383Wrocław, Poland
| | - Łukasz John
- Faculty
of Chemistry, University of Wrocław, 14 F. Joliot-Curie, 50-383Wrocław, Poland,
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4
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Bezerra WDA, Milani JLS, Franco CHDJ, Martins FT, de Fátima Â, da Mata ÁFA, das Chagas RP. Bis-benzimidazolium salts as bifunctional organocatalysts for the cycloaddition of CO2 with epoxides. MOLECULAR CATALYSIS 2022. [DOI: 10.1016/j.mcat.2022.112632] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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5
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Zhou L, Jiang C, Lin Q. Entropy analysis and grey cluster analysis of multiple indexes of 5 kinds of genuine medicinal materials. Sci Rep 2022; 12:6618. [PMID: 35459282 PMCID: PMC9033816 DOI: 10.1038/s41598-022-10509-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2021] [Accepted: 04/05/2022] [Indexed: 12/13/2022] Open
Abstract
5 kinds of genuine medicinal materials, including Diding (Latin name: Corydalis bungeana Turcz), Purslane (Latin name: Portulaca oleracea L.), straw sandal board (Latin name: Hoya carnosa (L.f.) R. Br), June snow (Latin name: Serissa japonica (Thunb.) Thunb.), pine vine rattan (Latin name: Lycopodiastrum casuarinoides (Spring) Holub. [Lycopodium casuarinoides Spring]), were selected as the research objects. The combustion heat, thermo gravimetric parameters, and fat content, calcium content, trace element content, ash content of 5 kinds of genuine medicinal materials were measured. The combustion heat, differential thermal gravimetric analysis, fat content, calcium content, trace elements content, and ash content of 5 kinds of genuine medicinal materials were used to build a systematic multi-index evaluation system by gray pattern recognition and grey correlation coefficient cluster analysis, which can make up for the gaps in this area and provide scientific basis and research significance for the study of genuine medicinal materials quality. The results showed that the order of combustion heat of 5 kinds of genuine medicinal materials, including Diding, Purslane, straw sandal board, June snow, pine vine rattan, was Diding > June snow > straw sandal board > Purslane > pine vine rattan, the order of fat content (%) of 5 kinds of genuine medicinal materials was straw sandal board > Diding > pine vine rattan > June snow > Purslane, the order of calcium content (%) was pine vine rattan > June snow > Purslane > straw sandal board > Diding, the order of ash content was June snow > Purslane > straw sandal board > pine vine rattan > Diding. From the analysis of thermogravimetric analysis results and thermogravimetric combustion stability, the order of combustion stability of 5 kinds of genuine medicinal materials was June snow > pine Vine rattan > straw sandal board > Diding > Portulaca oleracea. The order of the content of 12 trace elements in 5 kinds of genuine medicinal materials, in terms of trace element content, June snow contains the highest trace elements in all samples. According to combustion heat, combustibility (combustion stability of genuine medicinal materials), fat, calcium, ash, trace element content, the comprehensive evaluation results of multi-index analysis constructed by gray correlation degree, gray correlation coefficient factor analysis, and gray hierarchical cluster analysis showed that the comprehensive evaluation multi-index order of 5 genuine medicinal materials, including Diding, Purslane, straw sandal board, June snow and pine vine rattan, was June snow > straw sandal board > Diding > Purslane > pine vine rattan. Therefore, the comprehensive evaluation results of the quality of genuine medicinal materials selected in this study were June snow the best, followed by straw sandal board. This research has important theoretical and practical significance for the multi-index measurement and comprehensive evaluation of genuine medicinal materials, and can provide scientific basis and research significance for the research of multi-index quality control of genuine medicinal material.
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Affiliation(s)
- Libing Zhou
- Guangxi Science & Technology Normal University, Laibin, 546199, Guangxi, China.
| | - Caiyun Jiang
- Guangxi Science & Technology Normal University, Laibin, 546199, Guangxi, China
| | - Qingxia Lin
- Guangxi Science & Technology Normal University, Laibin, 546199, Guangxi, China
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6
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Nickel–cobalt hydroxide catalysts for the cycloaddition of carbon dioxide to epoxides. RESEARCH ON CHEMICAL INTERMEDIATES 2022. [DOI: 10.1007/s11164-022-04697-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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7
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Siripanich P, Bureerug T, Chanmungkalakul S, Sukwattanasinitt M, Ervithayasuporn V. Mono and Dumbbell Silsesquioxane Cages as Dual-Response Fluorescent Chemosensors for Fluoride and Polycyclic Aromatic Hydrocarbons. Organometallics 2022. [DOI: 10.1021/acs.organomet.1c00460] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Pattara Siripanich
- Department of Chemistry, Center of Excellence for Innovation in Chemistry (PERCH-CIC), and Center for Inorganic and Materials Chemistry, Faculty of Science, Mahidol University, Rama VI Road, Ratchathewi, Bangkok 10400, Thailand
| | - Teeraya Bureerug
- Department of Chemistry, Center of Excellence for Innovation in Chemistry (PERCH-CIC), and Center for Inorganic and Materials Chemistry, Faculty of Science, Mahidol University, Rama VI Road, Ratchathewi, Bangkok 10400, Thailand
| | - Supphachok Chanmungkalakul
- Department of Chemistry, Center of Excellence for Innovation in Chemistry (PERCH-CIC), and Center for Inorganic and Materials Chemistry, Faculty of Science, Mahidol University, Rama VI Road, Ratchathewi, Bangkok 10400, Thailand
| | - Mongkol Sukwattanasinitt
- Department of Chemistry, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand
- Nanotec-CU Center of Excellence on Food and Agriculture, Department of Chemistry, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand
| | - Vuthichai Ervithayasuporn
- Department of Chemistry, Center of Excellence for Innovation in Chemistry (PERCH-CIC), and Center for Inorganic and Materials Chemistry, Faculty of Science, Mahidol University, Rama VI Road, Ratchathewi, Bangkok 10400, Thailand
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Wang TY, Su YC, Ko BT, Hsu Y, Zeng YF, Hu CH, Datta A, Huang JH. Ring-Opening Polymerization of ε-Caprolactone and Styrene Oxide-CO 2 Coupling Reactions Catalyzed by Chelated Dehydroacetic Acid-Imine Aluminum Complexes. Molecules 2021; 27:164. [PMID: 35011395 PMCID: PMC8746973 DOI: 10.3390/molecules27010164] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Revised: 12/24/2021] [Accepted: 12/25/2021] [Indexed: 12/04/2022] Open
Abstract
A series of chelated dehydroacetic acid-imine-based ligands L1H~L4H was synthesized by reacting dehydroacetic acid with 2-t-butylaniline, (S)-1-phenyl-ethylamine, 4-methoxylbenzylamine, and 2-(aminoethyl)pyridine, respectively, in moderate yields. Ligands L1H~L4H reacted with AlMe3 in toluene to afford corresponding compounds AlMe2L1 (1), AlMe2L2 (2), AlMe2L3 (3), and AlMe2L4 (4). All the ligands and aluminum compounds were characterized by IR spectra, 1H and 13C NMR spectroscopy. Additionally, the ligands L1H~L4H and corresponding aluminum derivatives 1, 3, and 4 were characterized by single-crystal X-ray diffractometry. The catalytic activities using these aluminum compounds as catalysts for the ε-caprolactone ring-opening polymerization (ROP) and styrene oxide-CO2 coupling reactions were studied. The results show that increases in the reaction temperature and selective solvent intensify the conversions of ε-caprolactone to polycaprolactone. Regarding the coupling reactions of styrene oxide and CO2, the conversion rate is over 90% for a period of 12 h at 90 °C. This strategy dispenses the origination of cyclic styrene carbonates, which is an appealing concern because of the transformation of CO2 into an inexpensive, renewable and easy excess carbon feedstock.
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Affiliation(s)
- Ting-Yen Wang
- Department of Chemistry, National Changhua University of Education, Changhua 500, Taiwan; (T.-Y.W.); (Y.H.); (Y.-F.Z.); (C.-H.H.); (A.D.)
| | - Yu-Chia Su
- Department of Chemistry, National Chung-Hsing University, Taichung 402, Taiwan; (Y.-C.S.); (B.-T.K.)
| | - Bao-Tsan Ko
- Department of Chemistry, National Chung-Hsing University, Taichung 402, Taiwan; (Y.-C.S.); (B.-T.K.)
| | - Yu Hsu
- Department of Chemistry, National Changhua University of Education, Changhua 500, Taiwan; (T.-Y.W.); (Y.H.); (Y.-F.Z.); (C.-H.H.); (A.D.)
| | - Yu-Fang Zeng
- Department of Chemistry, National Changhua University of Education, Changhua 500, Taiwan; (T.-Y.W.); (Y.H.); (Y.-F.Z.); (C.-H.H.); (A.D.)
| | - Ching-Han Hu
- Department of Chemistry, National Changhua University of Education, Changhua 500, Taiwan; (T.-Y.W.); (Y.H.); (Y.-F.Z.); (C.-H.H.); (A.D.)
| | - Amitabha Datta
- Department of Chemistry, National Changhua University of Education, Changhua 500, Taiwan; (T.-Y.W.); (Y.H.); (Y.-F.Z.); (C.-H.H.); (A.D.)
| | - Jui-Hsien Huang
- Department of Chemistry, National Changhua University of Education, Changhua 500, Taiwan; (T.-Y.W.); (Y.H.); (Y.-F.Z.); (C.-H.H.); (A.D.)
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A Highly Efficient Environmental-Friendly Adsorbent Based on Schiff Base for Removal of Cu(II) from Aqueous Solutions: A Combined Experimental and Theoretical Study. Molecules 2021; 26:molecules26175164. [PMID: 34500598 PMCID: PMC8434251 DOI: 10.3390/molecules26175164] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Revised: 08/20/2021] [Accepted: 08/21/2021] [Indexed: 02/07/2023] Open
Abstract
Removal of heavy metals from drinking water sources and rivers is of strategic health importance and is essential for sustainable ecosystem development, in particular in polluted areas around the globe. In this work, new hybrid inorganic-organic material adsorbents made of ortho- (Si-o-OR) or para-Schiff base silica (Si-p-OR) were synthesized and characterized in depth. These hybrid adsorbents show a high selectivity to Cu(II), even in the presence of competing heavy metals (Zn(II), Cd(II), and Pb(II)), and also demonstrate great reusability after five adsorption-desorption cycles. Maximum sorption capacity for Cu(II) was found for Si-o-OR (79.36 mg g−1) and Si-p-OR (36.20 mg g−1) in no less than 25 min. Energy dispersive X-ray fluorescence and Fourier transform-infrared spectroscopy studies demonstrate that this uptake occurs due to a chelating effect, which allows these adsorbents to trap Cu(II) ions on their surfaces; this result is supported by a theoretical study for Si-o-OR. The new adsorbents were tested against real water samples extracted from two rivers from the Oriental region of Morocco.
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Abstract
The synthesis of polymeric materials starting from CO2 as a feedstock is an active task of research. In particular, the copolymerization of CO2 with epoxides via ring-opening copolymerization (ROCOP) offers a simple, efficient route to synthesize aliphatic polycarbonates (APC). In many cases, APC display poor physical and chemical properties, limiting their range of application. The terpolymerization of CO2 with epoxides and organic anhydrides or cyclic esters offers the possibility, combining the ROCOP with ring-opening polymerization (ROP), to access a wide range of materials containing polycarbonate and polyester segments along the polymer chain, showing enhanced properties with respect to the simple APC. This review will cover the last advancements in the field, evidencing the crucial role of the catalytic system in determining the microstructural features of the final polymer.
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Diana R, Panunzi B. Zinc (II) and AIEgens: The "Clip Approach" for a Novel Fluorophore Family. A Review. Molecules 2021; 26:4176. [PMID: 34299451 PMCID: PMC8304007 DOI: 10.3390/molecules26144176] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2021] [Revised: 07/05/2021] [Accepted: 07/06/2021] [Indexed: 12/17/2022] Open
Abstract
Aggregation-induced emission (AIE) compounds display a photophysical phenomenon in which the aggregate state exhibits stronger emission than the isolated units. The common term of "AIEgens" was coined to describe compounds undergoing the AIE effect. Due to the recent interest in AIEgens, the search for novel hybrid organic-inorganic compounds with unique luminescence properties in the aggregate phase is a relevant goal. In this perspective, the abundant, inexpensive, and nontoxic d10 zinc cation offers unique opportunities for building AIE active fluorophores, sensing probes, and bioimaging tools. Considering the novelty of the topic, relevant examples collected in the last 5 years (2016-2021) through scientific production can be considered fully representative of the state-of-the-art. Starting from the simple phenomenological approach and considering different typological and chemical units and structures, we focused on zinc-based AIEgens offering synthetic novelty, research completeness, and relevant applications. A special section was devoted to Zn(II)-based AIEgens for living cell imaging as the novel technological frontier in biology and medicine.
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Affiliation(s)
| | - Barbara Panunzi
- Department of Agricultural Sciences, University of Naples Federico II, 80055 Portici, Italy;
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12
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Siloxane Matrix Molecular Weight Influences the Properties of Nanocomposites Based on Metal Complexes and Dielectric Elastomer. MATERIALS 2021; 14:ma14123352. [PMID: 34204349 PMCID: PMC8234613 DOI: 10.3390/ma14123352] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/13/2021] [Revised: 06/02/2021] [Accepted: 06/05/2021] [Indexed: 12/12/2022]
Abstract
Siloxane-based elastomers are some of the most sought-after materials for the construction of actuators and equipment for energy harvesting devices. This article focuses on changes of the mechanical (breaking stress, breaking strain, Young's modulus) and dielectric properties for elastomers prepared with silicones, induced by the variation of molecular weight of the matrix, with three different silicone polymers having 60,000 g/mol, 150,000 g/mol, and 450,000 g/mol (from GPC measurements). Multiple siloxane elastomers were crosslinked with methyltriacetoxysilane using the sol-gel route. The dielectric permittivity values of the elastomers were also enhanced with two different complex structures containing siloxane bond and 3d transition metals as filler materials for polydimethylsiloxane polymers with various molecular weights. The dielectric spectroscopy tests demonstrated a small decrease (5%) for the values of the dielectric permittivity in relation to increased molecular weight of the siloxane polymer, both for samples prepared with pure polymer and for samples with metal complexes. The samples of nanocomposites showed a >50% increase of dielectric permittivity values relative to samples prepared of pure siloxane elastomer. The thermal tests demonstrated that the nanocomposites retained thermal stability similar with samples prepared of pure siloxane elastomer. The behavior under controlled conditions of humidity showed a trend of increased water vapor sorption with increasing molecular weight but an overall hydrophobic stable character of nanocomposites.
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Developing Eco-Friendly and Cost-Effective Porous Adsorbent for Carbon Dioxide Capture. Molecules 2021; 26:molecules26071962. [PMID: 33807301 PMCID: PMC8037370 DOI: 10.3390/molecules26071962] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Revised: 03/18/2021] [Accepted: 03/20/2021] [Indexed: 11/25/2022] Open
Abstract
To address the issue of global warming and climate change issues, recent research efforts have highlighted opportunities for capturing and electrochemically converting carbon dioxide (CO2). Despite metal doped polymers receiving widespread attention in this respect, the structures hitherto reported lack in ease of synthesis with scale up feasibility. In this study, a series of mesoporous metal-doped polymers (MRFs) with tunable metal functionality and hierarchical porosity were successfully synthesized using a one-step copolymerization of resorcinol and formaldehyde with Polyethyleneimine (PEI) under solvothermal conditions. The effect of PEI and metal doping concentrations were observed on physical properties and adsorption results. The results confirmed the role of PEI on the mesoporosity of the polymer networks and high surface area in addition to enhanced CO2 capture capacity. The resulting Cobalt doped material shows excellent thermal stability and promising CO2 capture performance, with equilibrium adsorption of 2.3 mmol CO2/g at 0 °C and 1 bar for at a surface area 675.62 m2/g. This mesoporous polymer, with its ease of synthesis is a promising candidate for promising for CO2 capture and possible subsequent electrochemical conversion.
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14
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Abstract
Crystalline porous materials (CPM)-200-In and CPM-200-In/Mg metal-organic frameworks (MOFs) were synthesized by a solvothermal method and were characterized by using powder X-ray diffraction (PXRD), FT-IR, Brunauer–Emmett–Teller (BET), temperature programmed desorption (TPD), TGA, XPS, and SEM-EDS. They were used as heterogeneous catalysts for the cycloaddition of CO2 with epoxides and found to be highly efficient toward the cycloaddition reaction at moderate reaction conditions under solvent-free conditions. The catalyst was easily separated by a simple filtration and can be reused up to five consecutive times without any considerable decrease of its initial activity. CPM-200-In/Mg showed excellent catalytic performance in the cycloaddition reaction due to the synergistic role of the acidic sites and basic sites. A plausible reaction mechanism for the CPM-200-In/Mg MOF catalyzed cycloaddition reaction is proposed based on the experimental results and our previously reported DFT (Density Functional Theory) studies.
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James AM, Reynolds J, Reed DG, Styring P, Dawson R. A Pressure Swing Approach to Selective CO 2 Sequestration Using Functionalized Hypercrosslinked Polymers. MATERIALS 2021; 14:ma14071605. [PMID: 33806093 PMCID: PMC8036798 DOI: 10.3390/ma14071605] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/18/2021] [Revised: 03/19/2021] [Accepted: 03/22/2021] [Indexed: 11/17/2022]
Abstract
Functionalized hypercrosslinked polymers (HCPs) with surface areas between 213 and 1124 m2/g based on a range of monomers containing different chemical moieties were evaluated for CO2 capture using a pressure swing adsorption (PSA) methodology under humid conditions and elevated temperatures. The networks demonstrated rapid CO2 uptake reaching maximum uptakes in under 60 s. The most promising networks demonstrating the best selectivity and highest uptakes were applied to a pressure swing setup using simulated flue gas streams. The carbazole, triphenylmethanol and triphenylamine networks were found to be capable of converting a dilute CO2 stream (>20%) into a concentrated stream (>85%) after only two pressure swing cycles from 20 bar (adsorption) to 1 bar (desorption). This work demonstrates the ease with which readily synthesized functional porous materials can be successfully applied to a pressure swing methodology and used to separate CO2 from N2 from industrially applicable simulated gas streams under more realistic conditions.
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Affiliation(s)
- Alex M. James
- Department of Chemistry, University of Sheffield, Brook Hill, Sheffield S3 7HF, UK; (A.M.J.); (J.R.)
| | - Jake Reynolds
- Department of Chemistry, University of Sheffield, Brook Hill, Sheffield S3 7HF, UK; (A.M.J.); (J.R.)
| | - Daniel G. Reed
- Department of Chemical and Biological Engineering, University of Sheffield, Mappin Street, Sheffield S1 3DJ, UK; (D.G.R.); (P.S.)
| | - Peter Styring
- Department of Chemical and Biological Engineering, University of Sheffield, Mappin Street, Sheffield S1 3DJ, UK; (D.G.R.); (P.S.)
| | - Robert Dawson
- Department of Chemistry, University of Sheffield, Brook Hill, Sheffield S3 7HF, UK; (A.M.J.); (J.R.)
- Correspondence: ; Tel.: +44-114-222-9357
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Piec K, Wątły J, Jerzykiewicz M, Kłak J, Plichta A, John Ł. Mono-substituted cage-like silsesquioxanes bound by trifunctional acyl chloride as a multi-donor N,O-type ligand in copper(ii) coordination chemistry: synthesis and structural properties. NEW J CHEM 2021. [DOI: 10.1039/d0nj05425a] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
In this paper, we report on the synthesis of novel copper(ii) complexes containing a multi-donor N,O-type ligand based on mono-substituted cage-like silsesquioxanes bound by trifunctional acyl chloride.
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Affiliation(s)
- Kamila Piec
- Faculty of Chemistry
- University of Wrocław
- 50-383 Wrocław
- Poland
| | - Joanna Wątły
- Faculty of Chemistry
- University of Wrocław
- 50-383 Wrocław
- Poland
| | | | - Julia Kłak
- Faculty of Chemistry
- University of Wrocław
- 50-383 Wrocław
- Poland
| | - Andrzej Plichta
- Faculty of Chemistry
- Warsaw University of Technology
- 00-664 Warsaw
- Poland
| | - Łukasz John
- Faculty of Chemistry
- University of Wrocław
- 50-383 Wrocław
- Poland
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