TADF‐Type Organic Afterglow

• Published in: Angewandte Chemie International Edition Vol. 60; no. 31; pp. 17138 - 17147
• Main Authors: Wang, Xuepu, Sun, Yan, Wang, Guangming, Li, Jiuyang, Li, Xun, Zhang, Kaka
• Format: Journal Article
• Language: English
• Published: Weinheim Wiley Subscription Services, Inc 26.07.2021
• Edition: International ed. in English
• Subjects: afterglow; Benzoates; Benzoic acid; Carbonyl compounds; Carbonyls; Dipole interactions; Dopants; Excitation; Functional groups; Medical imaging; organic materials; phosphorescence; thermally activated delayed fluorescence; triplet excited state

We report a highly efficient dopant‐matrix afterglow system enabled by TADF mechanism to realize afterglow quantum yields of 60–70 %, which features a moderate rate constant for reverse intersystem crossing (kRISC) to simultaneously improve afterglow quantum yields and maintain afterglow emission li...