Synthesis and properties of azonaphtharylamide pigments having arylamide groups at 2- and 7-positions

Junji Otani, Takeshi Kikuchi,Suguru Higashida,Takashi Harada,Michio Matsumura

Journal of Molecular Structure（2015）

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摘要

•Azonaphtharylamide pigments having 2- and 7-substituents were studied.•The pigments exhibited a hyperchromic effect and no bathochromic shift compared with the 7-unsubstituted counterparts.•Light and heat fastness of the pigments outperformed those of the counterparts.•The pigments are expected to form a new subclass of the azo pigments.

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关键词

Azonaphtharylamide pigments,Chromophore system,Bathochromic shift,Hyperchromic effect,Light fastness

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