Release Time:2019-03-12  Hits:

Indexed by: Journal Article

Date of Publication: 2017-06-14

Journal: SOFT MATTER

Included Journals: Scopus、PubMed、EI、SCIE

Volume: 13

Issue: 22

Page Number: 4074-4079

ISSN: 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.