系统间交叉
磷光
激发态
材料科学
接受者
杂原子
单重态
堆积
光化学
光电子学
原子物理学
化学物理
工作(物理)
光学
物理
荧光
热力学
凝聚态物理
化学
核磁共振
有机化学
戒指(化学)
作者
Dong Liang,Ji‐Hui Jia,Mingxue Yang,Xian‐Bao Cai,Rongmin Yu,Can‐Zhong Lu
标识
DOI:10.1002/adom.202201130
摘要
Abstract In this work, two spiro‐type compounds are investigated with similar molecular structure and stacking structure. By simply altering the acceptor's heteroatoms, a strategy to enhance room temperature phosphorescence (RTP) performance is presented. The intersystem crossing process can effectively be accelerated by reducing the energy gap between the singlet and triplet states (Δ E ST ) through adjusting the molecular energy level. Besides, thermally activated delayed fluorescence (TADF) is emerging in dilute solution due to such small Δ E ST . This is helpful for deeply understanding the mechanism of competition in different radiative decay pathways (RTP and TADF).
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