Design and Synthesis of Red Through-Space Charge Transfer Thermally Activated Delayed Fluorescence Emitters with Donor/Acceptor/Donor Stacking

You-Jun Yu; Min Song; Xin-Yue Meng; Yang-Kun Qu; Xue-Qi Wang; Long Chen; Sheng-Yi Yang; Dong-Ying Zhou; Zuo-Quan Jiang; Liang-Sheng Liao

doi:10.1021/acs.orglett.3c02168

Design and Synthesis of Red Through-Space Charge Transfer Thermally Activated Delayed Fluorescence Emitters with Donor/Acceptor/Donor Stacking

Org Lett. 2023 Aug 18;25(32):6024-6028. doi: 10.1021/acs.orglett.3c02168. Epub 2023 Aug 8.

Authors

Affiliation

¹ Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou, Jiangsu 215123, P. R. China.

PMID: 37552571
DOI: 10.1021/acs.orglett.3c02168

Abstract

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%.