Alkylene-bridged N,N,N′N′-Tetrasubstituted Bis(2-amino-5-thiazolyl)methinium Salts-A New Class of Strongly Fluorescent Dyes
作者:Horst Hartmann、Antje Noack
DOI:10.1002/1521-3773(20010202)40:3<552::aid-anie552>3.0.co;2-c
日期:2001.2.2
bridge in pyronine and rhodamine di- or triphenylmethane dyes, is connected to a significant hypsochrome shift of the absorption bands. This shift is absent when the bridge is an alkylene unit. While the preparation of such compounds is difficult, that of the heterocyclic analogues 1 is relatively simple and gives rise to intensely fluorescent dyes with absorptions at long wavelength.
吡咯和若丹明二苯或三苯甲烷染料中氧桥的荧光增强作用与吸收带的显着七色移有关。当桥是亚烷基单元时,不存在这种移位。尽管制备这类化合物很困难,但杂环类似物1的制备相对简单,并且产生了长波长吸收的强荧光染料。