2,4-Distyryl- and 2,4,6-Tristyrylpyrimidines: Synthesis and Photophysical Properties
作者:Michaela Fecková、Pascal le Poul、Françoise Robin-le Guen、Thierry Roisnel、Oldřich Pytela、Milan Klikar、Filip Bureš、Sylvain Achelle
DOI:10.1021/acs.joc.8b01653
日期:2018.10.5
The synthesis of a series of 20 new 2,4,6-tristyrylpyrimidines and three new 2,4-distyrylpyrimidines by means of combination of Knoevenagel condensation and Suzuki–Miyaura cross-coupling reaction is reported. This methodology enables us to obtain chromophores with identical or different substituent on each arm. The photophysical properties of the compounds are described. Optical properties and time-dependent
据报道,通过Knoevenagel缩合和Suzuki-Miyaura交叉偶联反应的组合,可以合成一系列20个新的2,4,6-三苯乙烯基嘧啶和三个新的2,4-二苯乙烯基嘧啶。这种方法使我们能够获得在每个臂上具有相同或不同取代基的生色团。描述了化合物的光物理性质。光学性质和随时间变化的密度泛函理论计算表明,目标化合物的光物理性质主要受C4 / C6位置上供电子基团的性质影响,除非C2取代基是明显更强的供电子基团。但是,C2取代基对发射量子产率有很大影响:添加强的供电子基团往往会降低荧光量子产率,