Zheng Shuyuan, Zhu Tianwen, Wang Yunzhong, Yang Tianjia, Yuan Wang Zhang
School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Key Lab of Electrical Insulation and Thermal Aging, Shanghai Electrochemical Energy Devices Research Center, Shanghai Jiao Tong University, No. 800 Dongchuan Rd., Minhang District, Shanghai, 200240, China.
Angew Chem Int Ed Engl. 2020 Jun 15;59(25):10018-10022. doi: 10.1002/anie.202000655. Epub 2020 Mar 18.
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.
由酰化琥珀酰亚胺组成的非芳香族、交叉共轭且高度扭曲的发光体在其单晶中表现出聚集诱导发光特性以及可调谐的多色光致发光和余辉。带有n/π电子的不同部分之间有效的空间共轭促进了自旋轨道耦合和系间窜越，并导致具有同时刚性化构象的多种发射簇，从而实现易于调节的发射。由此衍生出了先进防伪的概念验证应用。这些结果应会推动新型非芳香族聚集诱导发光体的合理设计，此外还能增进对非传统本征发光以及可调谐多色余辉起源的理解。
