Issue 25, 2015

An efficient phase-selective gelator for aromatic solvents recovery based on a cyanostilbene amide derivative

Abstract

Two novel low molecular weight organogelators (LMOGs) 1 and 2 composed of a cholesteryl group, an amide group and various terminal cyanostilbene moieties were synthesized. They could form stable gels in p-xylene. In particular, 2 with more extended π-conjugation length showed remarkable gelation ability in many aromatic solvents, chloroform and chloroform-containing mixed solvents at a relatively low concentration. FT-IR and XRD spectra indicated that the difference between 1 and 2 in the gelation properties may result from the deviation of the intermolecular hydrogen bonding and π–π stacking as driving forces for the formation of the gels. Significantly, 2 can function as an efficient room-temperature phase-selective gelator (PSG) for potential application in the separation and recovery of various aromatic solvents from its mixture with water. Meanwhile, the gelator can be easily recovered and reused several times. Furthermore, the phase-selective gelation properties of 2 can provide a simple and feasible approach for the removal of the rhodamine B (RhB) dye from water.

Graphical abstract: An efficient phase-selective gelator for aromatic solvents recovery based on a cyanostilbene amide derivative

Associated articles

Supplementary files

Article information

Article type
Paper
Submitted
16 Apr 2015
Accepted
16 May 2015
First published
18 May 2015

Soft Matter, 2015,11, 5095-5100

An efficient phase-selective gelator for aromatic solvents recovery based on a cyanostilbene amide derivative

Y. Zhang, Y. Ma, M. Deng, H. Shang, C. Liang and S. Jiang, Soft Matter, 2015, 11, 5095 DOI: 10.1039/C5SM00898K

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