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Supramolecular gel from self-assembly of a C-3-symmetrical discotic molecular bearing pillar[5]arene


Indexed by:期刊论文

First Author:Kuang, Xiao-jun

Correspondence Author:Gong, WT (reprint author), Dalian Univ Technol, Sch Chem Engn, State Key Lab Fine Chem, Dalian 116024, Peoples R China.

Co-author:Wajahat, Ali,Gong, Wei-tao,Dhinakaran, Manivannan Kalavathi,Li, Xiao-han,Ning, Gui-ling

Date of Publication:2017-06-14


Included Journals:SCIE、EI、PubMed、Scopus



Page Number:4074-4079

ISSN No.:1744-683X

Abstract:A novel C-3-symmetric benzene-1,3,5-tricarboxamide (BTAs) decorated with three identical pillar[5] arene tails was designed, synthesized and characterized. The compound can gelate acetonitrile at low concentration (0.2 wt%) upon sonication at room temperature, but a precipitate was obtained by a conventional heating-cooling process. Scanning electron microscopy revealed that the gel and precipitate were constructed by entangled, high-aspect-ratio flexible bundles of nanofibrils. UV-vis spectroscopy, circular dichroism, Fourier transform infrared microscopy and powder X-ray diffraction showed that the compound formed chiral, elongated, columnar aggregates with nanofiber morphology by a combination of intermolecular hydrogen bonding between the N-H and C=O of amides, pi-pi stacking (H-aggregates) and hydrophobic interactions of peripheral groups.

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