Development of Thermally Activated Delayed Fluorescence Materials with Shortened Emissive Lifetimes
作者:Andreas Kretzschmar、Christian Patze、S. Thimon Schwaebel、Uwe H. F. Bunz
DOI:10.1021/acs.joc.5b01496
日期:2015.9.18
We have prepared a thermally activated delayed fluorescence (TADF) capable molecular system carrying halogen substituents at the carbazole units. The attachment of the halogen atoms considerably decreases the half-life of the delayed fluorescence. The effect is significant. The heavier the halogen, the greater the effect. Our materials have the shortest reported emissive lifetimes for TADF achieved
我们已经制备了具有热活化延迟荧光(TADF)功能的分子系统,该系统在咔唑单元上带有卤素取代基。卤素原子的附着大大降低了延迟荧光的半衰期。效果显着。卤素越重,效果越好。迄今为止,我们的材料报告的TADF的发射寿命最短。通过重原子效应改善了系统间穿越(ISC),但在溶液以及掺杂薄膜中均实现了高量子产率。我们目标的简单有效合成使用廉价且容易获得的原料。