Two kinds of epoxy-based azo polymers containing thiazoleazobenzene chromophores have been designed.An epoxy-based precursor polymer was prepared by polymerization of diglycidyl ether of bisphenol-A and aniline.Two 2-aminothiazole derivatives

such as 2-amino-4-chloro-5-formylthiazole and 2-amino-4-chloro-5-dicyanovinylthiazole

were synthesized and their diazonium salts were prepared.The precursor polymer was postfunctionalized through azo-coupling reactions to form two azo polymers BP-1A-T-F and BP-1A-T-2CN.The azo polymers were characterized by the spectroscopic methods and thermal analysis.Polymers containing heteroaromatic chromophores exhibit improved temporal stability and show good solubility and processibility.The λmaxs of BP-1A-T-F and BP-1A-T-2CN obtained by UV-Vis spectroscopy are 579 nm and 650 nm; Tgs of the polymers are 152℃ and 149℃

respectively.