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Accessing Tunable Afterglows from Highly Twisted Nonaromatic Organic AIEgens via Effective Through‐Space Conjugation
Author(s) -
Zheng Shuyuan,
Zhu Tianwen,
Wang Yunzhong,
Yang Tianjia,
Yuan Wang Zhang
Publication year - 2020
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.202000655
Subject(s) - intersystem crossing , luminescence , photoluminescence , conjugated system , materials science , space (punctuation) , aggregation induced emission , coupling (piping) , photochemistry , chemical physics , optoelectronics , chemistry , polymer , fluorescence , physics , computer science , excited state , optics , operating system , singlet state , metallurgy , composite material , nuclear physics
Nonaromatic, cross‐conjugated, and highly twisted luminogens consisting of acylated succinimides demonstrate aggregation‐induced emission characteristics along with tunable multicolor photoluminescence and afterglows in their single crystals. Effective through‐space conjugation among different moieties bearing n/π electrons promote the spin–orbit coupling and intersystem crossing and lead to diverse emissive clusters with concurrently rigidified conformations, thus allowing readily tunable emissions. Derived from it, the proof‐of‐concept application for advanced anti‐counterfeiting is illustrated. These results should spur the rational design of novel nonaromatic AIEgens, and moreover advance understandings of the non‐traditional intrinsic luminescence and the origin of tunable multicolor afterglows.