Time‐Dependent Afterglow Color in a Single‐Component Organic Molecular Crystal

• Published in: Angewandte Chemie International Edition Vol. 59; no. 25; pp. 10032 - 10036
• Main Authors: Wang, Jian‐Xin, Fang, Ye‐Guang, Li, Chun‐Xiang, Niu, Li‐Ya, Fang, Wei‐Hai, Cui, Ganglong, Yang, Qing‐Zheng
• Format: Journal Article
• Language: English
• Published: Germany Wiley Subscription Services, Inc 15.06.2020
• Edition: International ed. in English
• Subjects: Biphenyl; Color; Computer applications; Data encryption; Decay rate; Encryption; Energy gap; Evolution; Fluorescence; Luminescence; Optical properties; Organic chemistry; Organic crystals; persistent RTP; Phosphorescence; thermally activated delayed fluorescence; Time dependence; phosphorescence; persistent RTP; thermally activated delayed fluorescence; data encryption

An organic crystal of 4,4′‐bis(N‐carbazolyl)‐1,1′‐biphenyl (pCBP) exhibits time‐dependent afterglow color from blue to orange over 1 s. Both experimental and computational data confirm that the color evolution results from well‐separated, long‐persistent thermally activated delayed fluorescence (TAD...