Synthesis of yellow and red fluorescent 1,3a,6a-triazapentalenes and the theoretical investigation of their optical properties
作者:Kosuke Namba、Ayumi Osawa、Akira Nakayama、Akane Mera、Fumi Tano、Yoshiro Chuman、Eri Sakuda、Tetsuya Taketsugu、Kazuyasu Sakaguchi、Noboru Kitamura、Keiji Tanino
DOI:10.1039/c4sc02780a
日期:——
To expand the originally developed fluorescent 1,3a,6a-triazapentalenes as fluorescent labelling reagents, the fluorescence wavelength of the 1,3a,6a-triazapentalenes was extended to the red color region. Based on the noteworthy correlation of the fluorescence wavelength with the inductive effect of the 2-substituent, electron-deficient 2-(2-cyano-4-methoxycarbonylphenyl)-1,3a,6a-triazapentalene and
为了扩展最初开发的荧光1,3a,6a-三氮杂戊二烯作为荧光标记试剂,1,3a,6a-三氮杂戊二烯的荧光波长被扩展到红色区域。基于荧光波长与2-取代基、缺电子2-(2-氰基-4-甲氧基羰基苯基)-1,3a,6a-三氮杂戊二烯和2-(2,6-二氰基)的诱导效应的显着相关性合成了-4-甲氧基羰基苯基)-1,3a,6a-三氮杂戊二烯。前者呈现黄色荧光,后者呈现红色荧光,两种化合物均表现出较大的斯托克斯位移,1,3a,6a-三氮杂戊二烯体系使相同的荧光发色团覆盖整个可见光波长区域。研究了1,3a,6a-三氮杂五烯作为荧光探针在生命科学领域的潜在应用,并且1,3a,6a-三氮杂五烯系统被明确证明可用作活细胞成像的荧光试剂。进行量子化学计算以研究 1,3a,6a-三氮杂戊二烯的光学性质。这些计算表明,激发涉及从 1,3a,6a-三氮杂戊二烯骨架到 2-取代基的显着电荷转移。计算的吸收和荧光波长与实验结果