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论文类型：期刊论文

发表时间：2017-06-14

发表刊物：SOFT MATTER

收录刊物：SCIE、EI、PubMed、Scopus

卷号：13

期号：22

页面范围：4074-4079

ISSN号：1744-683X

摘要：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.