the emission behavior from triplet states by selecting the geometry of the intramolecular charge transfer (ICT) state. A fundamental principle of planar ICT (PICT) and twisted ICT (TICT) is demonstrated to obtain selectively either room temperature phosphorescence (RTP) or thermally activated delayed fluorescence (TADF), respectively. Time‐resolved spectroscopy and time‐dependent density functional theory
吩噻嗪-
二苯甲酮衍
生物的
化学修饰通过选择分子内电荷转移(ICT)状态的几何形状来调整三重态的发射行为。平面ICT(
PICT)和扭曲ICT(TICT)的基本原理已被证明分别有选择地获得室温
磷光(RTP)或热激活延迟荧光(TADF)。对多态单晶的时间分辨光谱学和时变密度泛函理论(TD-DFT)研究证明了
PICT和TICT状态在基础光物理中的作用。这导致了RTP分子OPM,其中三重态占89%的发光,而异构TADF分子OMP,其中三重态占95%的发光。