Fluorescence Properties of Diphenylthiazolo[4,5-<i>b</i>]pyrazines Tuned by Donor-Acceptor Substituent Effects
作者:Tatsuki Nakagawa、Minoru Yamaji、Shojiro Maki、Haruki Niwa、Takashi Hirano
DOI:10.1111/php.12440
日期:2015.7
Fluorescence properties of 2,6‐ and 2,5‐diphenylthiazolo[4,5‐b]pyrazine (TPy) derivatives having an electron‐donating substituent (methoxy and dimethylamino) on the 6‐ and 5‐phenyl groups were studied. It was found that 2,6‐diphenyl derivatives fluoresce more efficiently than 2,5‐diphenyl derivatives. Furthermore, a 2,6‐diphenyl derivative having an additional cyano group on the 2‐phenyl ring was an
研究了在 6- 和 5- 苯基上具有给电子取代基(甲氧基和二甲氨基)的 2,6- 和 2,5- 二苯基噻唑并[4,5-b] 吡嗪 (TPy) 衍生物的荧光性质。发现 2,6-二苯基衍生物比 2,5-二苯基衍生物更有效地发出荧光。此外,在 2-苯环上具有额外氰基的 2,6-二苯基衍生物是一种优异的荧光团,显示出广泛的溶剂致变色和高荧光产率。基于获得的光谱数据和关于取代基对荧光特性的影响的机制解释,提供了有关设计新 TPy 荧光团的有用信息。