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Synthesis and Properties of Novel Aromatic Azo Compounds from Hydroxyazobenzene and Cyanuric Chloride
Author(s) -
Li Weiwei,
Xu Dongmei,
Zhang Zhilan,
Xu Ying
Publication year - 2012
Publication title -
chinese journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 1001-604X
DOI - 10.1002/cjoc.201200209
Subject(s) - cyanuric chloride , azobenzene , chemistry , photoisomerization , crystallinity , thermostability , solubility , polymer chemistry , chloride , organic chemistry , absorption (acoustics) , photochemistry , polymer , isomerization , materials science , catalysis , crystallography , enzyme , composite material
A new series of aromatic azo compounds with one, two, three and five azobenzene units were facilely constructed by dehydrochlorination reaction between p ‐hydroxyazobenzene, 4,4′‐dihydroxyazobenzene and cyanuric chloride under very mild conditions. Their solubility, crystallinity, thermostability, UV‐vis absorption properties and photoisomerization behaviors were carefully examined. When the number of azobenzene unit grew, the solubility of the synthesized compounds basically decreased, the crystallinity of the synthesized compounds firstly rose then dropped, while the thermostability and UV‐vis absorption ability of the synthesized compounds greatly improved. All the aromatic azo compounds exhibited typical reversible photoisomerization behaviors and were expected to be applied in photosensitive material areas.