NDLI: Fabrication of nanofibres with azopyridine compounds in various acids and solvents

Content Provider	Royal Society of Chemistry (RSC)
Author	Yu, Haifeng Zhang, Lanying Lu, Yunfeng Chen, Yinjie Yang, Huai Quan, Maohua
Copyright Year	2015
Abstract	Supramolecular self-organization behaviours of one azopyridine compound were systematically studied in a series of inorganic acids and various organic solvents. Different morphologies of the resultant low-molecular-weight compounds were obtained in diverse environments. The acid dissociation constant has a critical effect on the self-assembly since the nanofibres were successfully obtained only when the acid dissociation constant is between 2.12 and −3.00. Besides, the organic solvent also influenced the process of fibre formation. In acetone, the self-organized fibrous material resulted in the occurrence of gelation. The driving force for nanofibre formation may be due to the existence of several non-covalent interactions, such as hydrogen bonds, ionic bonds and the aggregation of chromophores. Then, a possible schematic illustration for the fabrication of supramolecularly self-assembled fibres was proposed based on TEM and XRD measurements. That is, visible micron-fibres were made from nanofibres through stacking interaction forces of azopyridine chromophores.
Starting Page	31219
Ending Page	31225
Page Count	7
File Format	HTM / HTML PDF
ISSN	20462069
Volume Number	5
Issue Number	39
Journal	RSC Advances
DOI	10.1039/c5ra02089a
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	X-ray crystallography Self-assembly Transmission electron microscopy Acid dissociation constant Solvent Self-organization Acetone Hydrogen bond
Content Type	Text
Resource Type	Article
Subject	Chemistry Chemical Engineering

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