文章基本信息

标题：シアニン色素の研究 (第34報) Pyrazine核あるいはQuinoxaline核を有するシアニン色素の合成と吸収スペクトルに関する研究
本地全文：下载
作者：飛鋪靖 ; 野中治 ; 上田保等
期刊名称：日本写真学会誌
印刷版ISSN：0369-5662
电子版ISSN：1884-5932
出版年度：1972
卷号：35
期号：6
页码：344-350
出版社：The Society of Photographic Science and Technolgy of Japan
摘要：Eight unsymmetrical carbocyanine dyes, eight hexamethine-hemicyanine dyes, containing pyrazine (P) nucleus, and five unsymmetrical carbocyanine dyes, containing quinoxaline (Q) nucleus were snythesized. And their absorption max. were determined. As for the relationship between basicity of P nucleus or Q nucleus and the absorption max. of their dyes, following results were obtained.(1) As basicity of the amine in the hemicyanines increase, absorption max. of the dyes containing P nucleus shifts to the longer wavelength.(2) Concerning the relations above mentioned, (P) effects largier influence to their ab. max. than benloxazole or benzothiazole nucleus, the latter had been reported previously.(3) Basicity of P nucleus is nearly about pKa 7.7.(4) Basicity of Q nucleus corresponds to benzoxazole nucleus.(5) Absorption spectra of unsymmetrical carbocyanine dyes containing Q nucleus show a shoulder at long wavelength side.