Yu You-Jun, Song Min, Meng Xin-Yue, Qu Yang-Kun, Wang Xue-Qi, Chen Long, Yang Sheng-Yi, Zhou Dong-Ying, Jiang Zuo-Quan, Liao Liang-Sheng
Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou, Jiangsu 215123, P. R. China.
Org Lett. 2023 Aug 18;25(32):6024-6028. doi: 10.1021/acs.orglett.3c02168. Epub 2023 Aug 8.
Red through-space charge transfer thermally activated delayed fluorescence (TSCT TADF) materials named SAF36DCPP and SAF27DCPP with sandwiched structures were synthesized. Single crystals indicated that the intramolecular C-H···π interactions play a vital role in rigidifying the sandwiched structure, which results in a fluorescence yield of 63% for SAF36DCPP compared to 40% for SAF27DCPP. Organic light-emitting diodes with SAF36DCPP as the emitter realized a maximum external quantum efficiency of 16.12%.
合成了具有夹心结构的红色穿空间电荷转移热激活延迟荧光（TSCT TADF）材料SAF36DCPP和SAF27DCPP。单晶表明分子内C-H···π相互作用在刚性化夹心结构中起着至关重要的作用，这使得SAF36DCPP的荧光产率达到63%，而SAF27DCPP为40%。以SAF36DCPP作为发光体的有机发光二极管实现了16.12%的最大外量子效率。
