Observation of osmotically driven, highly controllable and reconfigurable oil/water phase separation

Liquid–liquid phase separation has been proven to be a valuable method for producing structured materials and creating chemical systems. Although several strategies have been developed to date, osmotically driven oil/water phase separation has never been achieved owing to the limited solubility of i...

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Autores principales: Gao, Ning, Cui, Jiecheng, Zhang, Wanlin, Feng, Kai, Liang, Yun, Wang, Shiqiang, Wang, Peng, Zhou, Kang, Li, Guangtao
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Royal Society of Chemistry 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6836749/
https://www.ncbi.nlm.nih.gov/pubmed/31853347
http://dx.doi.org/10.1039/c9sc01649j
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author Gao, Ning
Cui, Jiecheng
Zhang, Wanlin
Feng, Kai
Liang, Yun
Wang, Shiqiang
Wang, Peng
Zhou, Kang
Li, Guangtao
author_facet Gao, Ning
Cui, Jiecheng
Zhang, Wanlin
Feng, Kai
Liang, Yun
Wang, Shiqiang
Wang, Peng
Zhou, Kang
Li, Guangtao
author_sort Gao, Ning
collection PubMed
description Liquid–liquid phase separation has been proven to be a valuable method for producing structured materials and creating chemical systems. Although several strategies have been developed to date, osmotically driven oil/water phase separation has never been achieved owing to the limited solubility of inorganic salts in conventional organic solvents and thus the insufficient osmotic driving force to counterbalance the Laplace pressure associated with the interfacial tension. Herein, we report the discovery that a mixture of 1-alkyl-3-vinylimidazolium bis(trifluoromethanesulfonyl)imide and LiTf(2)N can generate sufficient and widely tunable osmotic pressure in oil to realize water transport from the surrounding aqueous phase into the oil phase, triggering spontaneous phase separation. This osmotically driven phase separation could be modulated with unprecedented flexibility, offering unlimited possibilities to facilely access diverse thermodynamically metastable structures using one system. Importantly, this oil system can serve as a general phase separation carrier platform for realizing phase separation of various substances.
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spelling pubmed-68367492019-12-18 Observation of osmotically driven, highly controllable and reconfigurable oil/water phase separation Gao, Ning Cui, Jiecheng Zhang, Wanlin Feng, Kai Liang, Yun Wang, Shiqiang Wang, Peng Zhou, Kang Li, Guangtao Chem Sci Chemistry Liquid–liquid phase separation has been proven to be a valuable method for producing structured materials and creating chemical systems. Although several strategies have been developed to date, osmotically driven oil/water phase separation has never been achieved owing to the limited solubility of inorganic salts in conventional organic solvents and thus the insufficient osmotic driving force to counterbalance the Laplace pressure associated with the interfacial tension. Herein, we report the discovery that a mixture of 1-alkyl-3-vinylimidazolium bis(trifluoromethanesulfonyl)imide and LiTf(2)N can generate sufficient and widely tunable osmotic pressure in oil to realize water transport from the surrounding aqueous phase into the oil phase, triggering spontaneous phase separation. This osmotically driven phase separation could be modulated with unprecedented flexibility, offering unlimited possibilities to facilely access diverse thermodynamically metastable structures using one system. Importantly, this oil system can serve as a general phase separation carrier platform for realizing phase separation of various substances. Royal Society of Chemistry 2019-06-21 /pmc/articles/PMC6836749/ /pubmed/31853347 http://dx.doi.org/10.1039/c9sc01649j Text en This journal is © The Royal Society of Chemistry 2019 http://creativecommons.org/licenses/by-nc/3.0/ This article is freely available. This article is licensed under a Creative Commons Attribution Non Commercial 3.0 Unported Licence (CC BY-NC 3.0)
spellingShingle Chemistry
Gao, Ning
Cui, Jiecheng
Zhang, Wanlin
Feng, Kai
Liang, Yun
Wang, Shiqiang
Wang, Peng
Zhou, Kang
Li, Guangtao
Observation of osmotically driven, highly controllable and reconfigurable oil/water phase separation
title Observation of osmotically driven, highly controllable and reconfigurable oil/water phase separation
title_full Observation of osmotically driven, highly controllable and reconfigurable oil/water phase separation
title_fullStr Observation of osmotically driven, highly controllable and reconfigurable oil/water phase separation
title_full_unstemmed Observation of osmotically driven, highly controllable and reconfigurable oil/water phase separation
title_short Observation of osmotically driven, highly controllable and reconfigurable oil/water phase separation
title_sort observation of osmotically driven, highly controllable and reconfigurable oil/water phase separation
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6836749/
https://www.ncbi.nlm.nih.gov/pubmed/31853347
http://dx.doi.org/10.1039/c9sc01649j
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