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Khoo YS, Tjong TC, Chew JW, Hu X. Techniques for recovery and recycling of ionic liquids: A review. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 922:171238. [PMID: 38423336 DOI: 10.1016/j.scitotenv.2024.171238] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2023] [Revised: 02/16/2024] [Accepted: 02/22/2024] [Indexed: 03/02/2024]
Abstract
Due to beneficial properties like non-flammability, thermal stability, low melting point and low vapor pressure, ionic liquids (ILs) have gained great interest from engineers and researchers in the past decades to replace conventional solvents. The superior characteristics of ILs make them promising for applications in fields as wide-ranging as pharmaceuticals, foods, nanoparticles synthesis, catalysis, electrochemistry and so on. To alleviate the high cost and environmental impact of ILs, various technologies have been reported to recover and purify the used ILs, as well as recycling the ILs. The aim of this article is to overview the state-of-the-art research on the recovery and recycling technologies for ILs including membrane technology, distillation, extraction, aqueous two-phase system (ATPS) and adsorption. In addition, challenges and future perspectives on ILs recovery are discussed. This review is expected to provide valuable insights for developing effective and environmentally friendly recovery methods for ILs.
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Affiliation(s)
- Ying Siew Khoo
- School of Materials Science and Engineering, Nanyang Technological University (NTU), 50 Nanyang Ave, Block N4.1, 639798, Singapore; RGE-NTU Sustainable Textile Research Centre, Nanyang Technological University (NTU), 639798, Singapore
| | - Tommy Chandra Tjong
- School of Materials Science and Engineering, Nanyang Technological University (NTU), 50 Nanyang Ave, Block N4.1, 639798, Singapore; RGE-NTU Sustainable Textile Research Centre, Nanyang Technological University (NTU), 639798, Singapore
| | - Jia Wei Chew
- RGE-NTU Sustainable Textile Research Centre, Nanyang Technological University (NTU), 639798, Singapore; School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University (NTU), 62 Nanyang Drive, 637459, Singapore; Chemical Engineering, Chalmers University of Technology, 412 96 Gothenburg, Sweden.
| | - Xiao Hu
- School of Materials Science and Engineering, Nanyang Technological University (NTU), 50 Nanyang Ave, Block N4.1, 639798, Singapore; RGE-NTU Sustainable Textile Research Centre, Nanyang Technological University (NTU), 639798, Singapore.
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Grunwald MA, Hagenlocher SE, Turkanovic L, Bauch SM, Wachsmann SB, Altevogt LA, Ebert M, Knöller JA, Raab AR, Schulz F, Kolmangadi MA, Zens A, Huber P, Schönhals A, Bilitiewski U, Laschat S. Does thermotropic liquid crystalline self-assembly control biological activity in amphiphilic amino acids? - tyrosine ILCs as a case study. Phys Chem Chem Phys 2023. [PMID: 37366119 DOI: 10.1039/d3cp00485f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/28/2023]
Abstract
Amphiphilic amino acids represent promising scaffolds for biologically active soft matter. In order to understand the bulk self-assembly of amphiphilic amino acids into thermotropic liquid crystalline phases and their biological properties a series of tyrosine ionic liquid crystals (ILCs) was synthesized, carrying a benzoate unit with 0-3 alkoxy chains at the tyrosine unit and a cationic guanidinium head group. Investigation of the mesomorphic properties by polarizing optical microscopy (POM), differential scanning calorimetry (DSC) and X-ray diffraction (WAXS, SAXS) revealed smectic A bilayers (SmAd) for ILCs with 4-alkoxy- and 3,4-dialkoxybenzoates, whereas ILCs with 3,4,5-trisalkoxybenzoates showed hexagonal columnar mesophases (Colh), while different counterions had only a minor influence. Dielectric measurements revealed a slightly higher dipole moment of non-mesomorphic tyrosine-benzoates as compared to their mesomorphic counterparts. The absence of lipophilic side chains on the benzoate unit was important for the biological activity. Thus, non-mesomorphic tyrosine benzoates and crown ether benzoates devoid of additional side chains at the benzoate unit displayed the highest cytotoxicities (against L929 mouse fibroblast cell line) and antimicrobial activity (against Escherichia coli ΔTolC and Staphylococcus aureus) and promising selectivity ratio in favour of antimicrobial activity.
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Affiliation(s)
- Marco André Grunwald
- Institut für Organische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany.
| | - Selina Emilie Hagenlocher
- Institut für Organische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany.
| | - Larissa Turkanovic
- Institut für Organische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany.
| | - Soeren Magnus Bauch
- Institut für Organische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany.
| | | | - Luca Alexa Altevogt
- Institut für Organische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany.
| | - Max Ebert
- Institut für Organische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany.
| | - Julius Agamemnon Knöller
- Institut für Organische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany.
| | - Aileen Rebecca Raab
- Institut für Organische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany.
| | - Finn Schulz
- Institut für Organische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany.
| | | | - Anna Zens
- Institut für Organische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany.
| | - Patrick Huber
- Institute for Materials and X-Ray Physics, Hamburg University of Technology, D-21073 Hamburg, Germany
- Centre for X-ray and Nano Science CXNS, Deutsches Elektronen-Synchrotron DESY, D-22605 Hamburg, Germany
- Centre for Hybrid Nanostructures ChyN, University Hamburg, D-21073 Hamburg, Germany.
| | - Andreas Schönhals
- Bundesanstalt für Materialforschung und-prüfung (BAM), D-12205 Berlin, Germany.
| | - Ursula Bilitiewski
- AG Compound Profiling and Screening, Helmholtz Zentrum für Infektionsforschung, Inhoffenstr. 7, D-38124 Braunschweig, Germany.
| | - Sabine Laschat
- Institut für Organische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany.
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Li M, Rao C, Ye X, Wang M, Yang B, Wang C, Guo L, Xiong Y, Cui X. Applications for natural deep eutectic solvents in Chinese herbal medicines. Front Pharmacol 2023; 13:1104096. [PMID: 36699048 PMCID: PMC9868165 DOI: 10.3389/fphar.2022.1104096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Accepted: 12/28/2022] [Indexed: 01/10/2023] Open
Abstract
Chinese herbal medicines (CHMs), with a wide range of bioactive components, are considered to be an important source for new drug discovery. However, the process to isolate and obtain those bioactive components to develop new drugs always consumes a large amount of organic solvents with high toxicity and non-biodegradability. Natural deep eutectic solvents (NADES), a new type of green and designable solvents composed of primary plant-based metabolites, have been used as eco-friendly substitutes for traditional organic solvents in various fields. Due to the advantages of easy preparation, low production cost, low toxicity, and eco-friendliness, NADES have been also applied as extraction solvents, media, and drug delivery agents in CHMs in recent years. Besides, the special properties of NADES have been contributed to elucidating the traditional processing (also named Paozhi in Chinese) theory of CHMs, especially processing with honey. In this paper, the development process, preparation, classification, and applications for NADES in CHMs have been reviewed. Prospects in the future applications and challenges have been discussed to better understand the possibilities of the new solvents in the drug development and other uses of CHMs.
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Affiliation(s)
- Minghui Li
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, China,Yunnan Key Laboratory of Panax notoginseng, Kunming University of Science and Technology, Kunming, China
| | - Cheng Rao
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, China,Yunnan Key Laboratory of Panax notoginseng, Kunming University of Science and Technology, Kunming, China
| | - Xiaoqian Ye
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, China,Yunnan Key Laboratory of Panax notoginseng, Kunming University of Science and Technology, Kunming, China
| | - Mei Wang
- Leiden University–European Center for Chinese Medicine and Natural Compounds, Institute of Biology Leiden, Leiden University, Leiden, Netherlands,SU Biomedicine BV, Leiden, Netherlands
| | - Boyuan Yang
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, China,Yunnan Key Laboratory of Panax notoginseng, Kunming University of Science and Technology, Kunming, China
| | - Chengxiao Wang
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, China,Yunnan Key Laboratory of Panax notoginseng, Kunming University of Science and Technology, Kunming, China
| | - Liqun Guo
- Center for Drug Discovery & Technology Development of Yunnan Traditional Medicine, Kunming, China
| | - Yin Xiong
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, China,Yunnan Key Laboratory of Panax notoginseng, Kunming University of Science and Technology, Kunming, China,Leiden University–European Center for Chinese Medicine and Natural Compounds, Institute of Biology Leiden, Leiden University, Leiden, Netherlands,*Correspondence: Yin Xiong, ; Xiuming Cui,
| | - Xiuming Cui
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, China,Yunnan Key Laboratory of Panax notoginseng, Kunming University of Science and Technology, Kunming, China,*Correspondence: Yin Xiong, ; Xiuming Cui,
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Keppeler N, Galgano PD, da Silva Santos S, Malek NI, El Seoud OA. On the effects of head-group volume on the adsorption and aggregation of 1-(n-hexadecyl)-3-Cm-imidazolium bromide and chloride surfactants in aqueous solutions. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.115478] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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Kuhn BL, Osmari BF, Heinen TM, Bonacorso HG, Zanatta N, Nielsen SO, Ranathunga DT, Villetti MA, Frizzo CP. Dicationic imidazolium-based dicarboxylate ionic liquids: Thermophysical properties and solubility. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.112983] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
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Kuznetsova DA, Gabdrakhmanov DR, Lukashenko SS, Voloshina AD, Sapunova AS, Kulik NV, Nizameev IR, Kadirov MK, Kashapov RR, Zakharova LY. Supramolecular systems based on cationic imidazole-containing amphiphiles bearing hydroxyethyl fragment: Aggregation properties and functional activity. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2019.111058] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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