Ferrocene-containing thixotropic molecular gels: creation and a novel strategy for water purification

Journal of Colloid and Interface Science
Junlin YanYu Fang

Abstract

Low-molecular-mass gelators and relevant molecular gels have been employed for water purification owing to their convenience and efficiency, but the process is time consuming due to low extraction efficiency originated from limited contact of the two phases. In this work, two novel di-cholesterol-based gelators, 1 and 2, with a ferrocenyl unit were synthesized and the gels based on 2 possess a smart thixotropic property. In particular, 2/heptane gel, the shear force induced phase transition is fast (within seconds) and fully reversible without the need of heating-cooling cycle. Based upon the thixotropic molecular gel, a novel separation strategy, which combines the great efficiency of liquid-liquid extraction and the convenience of liquid-solid separation, has been successfully conducted for removing iodine from wastewater. It was demonstrated that iodine was removed within several minutes and the extraction efficiency (72%) was the same with the one using corresponding liquid. Furthermore, 2/heptane gel is also responsive to chemical oxidation and variation in temperature. FTIR, NMR, CD and XRD studies revealed that helical fibers were formed via intermolecular hydrogen bonding and van der Waals interaction. It is believed th...Continue Reading

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Oct 4, 2014·ACS Applied Materials & Interfaces·Shasha SongJingcheng Hao

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Citations

Oct 7, 2016·Chemical Society Reviews·Christopher D Jones, Jonathan W Steed
Jan 25, 2019·Gels·Ty Christoff-TempestaJulia H Ortony
Mar 5, 2021·Journal of Materials Chemistry. B, Materials for Biology and Medicine·Jianjun ChengXin Yang
Jun 15, 2021·Chemical Science·Christopher D JonesJonathan W Steed
Dec 8, 2020·Journal of Agricultural and Food Chemistry·Ayyapillai ThamizhanbanSubbiah Nagarajan

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