作者:Constantin‐Christian A. Voll、Jens U. Engelhart、Markus Einzinger、Marc A. Baldo、Timothy M. Swager
DOI:10.1002/ejoc.201700703
日期:2017.9
A new donor–acceptor iptycene containing carbazole donors and a thiadiazoloquinoxaline acceptor was synthesized and its photo- and electrochemical properties evaluated. The key intermediate 1 allows a lateral modification through cross-coupling, and the (triisopropylsilyl)acetylene product 2 exhibits bright yellow fluorescence with emission lifetimes of 2.42 µs in deoxygenated hexane. The long lifetime
合成了一种含有咔唑供体和噻二唑并喹喔啉受体的新型供体-受体 iptycene,并对其光和电化学性能进行了评估。关键中间体 1 允许通过交叉偶联进行横向修饰,(三异丙基甲硅烷基)乙炔产物 2 在脱氧己烷中呈现亮黄色荧光,发射寿命为 2.42 µs。长寿命和高量子效率 (73%) 被 O2 淬灭,因此归因于热激活延迟荧光 (TADF)。这种方法允许通过交叉偶联反应进行功能化,并描绘了合成 TADF 活性分子的有前途的支架。