文献类型：期刊文献

英文题名：Efficient manipulation of triplet excitons for long afterglow in flexible crystals

作者：Wu, Zhiqin[1,2];Liu, Jian[1,2];He, Zhenyi[1,2];Cao, Jingyu[1,2];Tang, Baolei[3];Zhou, Lei[1,2];Li, Yang[1,2];Zhang, Hongyu[3];Ma, Xiang[1,2]

机构：[1]East China Univ Sci & Technol, Inst Fine Chem, Sch Chem & Mol Engn, Key Lab Adv Mat, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Feringa Nobel Prize Scientist Joint Res Ctr, Frontiers Sci Ctr Materiobiol & Dynam Chem, Inst Fine Chem,Sch Chem & Mol Engn, Shanghai 200237, Peoples R China;[3]Jilin Univ, Coll Chem, State Key Lab Supramol Struct & Mat, Changchun 130012, Peoples R China

年份：2026

外文期刊名：SCIENCE CHINA-CHEMISTRY

收录：;EI(收录号：20261620519112);WOS:【SCI-EXPANDED(收录号:WOS:001740827800001)】；

基金：This work was supported by the National Natural Science Foundation of China (22125803, T2488302, 22020102006, 22408106), the Science and Technology Commission of Shanghai Municipality (24DX1400200), the Postdoctoral Fellowship Program of CPSF and the Fundamental Research Funds for the Central Universities. We thank Prof. Hongyu Zhang for testing the optical waveguide and Dr. Bingbing Ding and Dr. Liangwei Ma for their helpful discussions.

语种：英文

外文关键词：room temperature phosphorescence; flexible crystal; afterglow optical waveguiding; triplet-triplet energy transfer

摘要：Flexible optoelectronic materials are becoming an emerging research area due to their unique flexibility and processing feasibility. However, the development of flexible crystals with long afterglow remains a formidable challenge. Herein, flexible crystals with long afterglow are achieved by enriching and stabilizing triplet excitons through crystal engineering and host-guest doping. These flexible crystals exhibit multi-channel emission and a phosphorescent lifetime of 966.24 ms under ambient conditions, significantly surpassing previously reported flexible crystals with afterglow properties. Notably, high-temperature phosphorescence, which is rarely observed in crystals, can be detected in the obtained material. Single-crystal analysis and theoretical calculation reveal that weak C-H & ctdot;pi and pi & ctdot;pi interactions contribute to the flexibility of the crystals. The crystals possess an elastic modulus of 0.081 GPa and an average hardness of 0.004 GPa, characteristics that are highly uncommon in the field of flexible optoelectronics. Ultimately, flexible crystals are applied in optoelectronic information transmission and encryption. This study provides a crucial reference for the advanced application of flexible crystals in optical and material sciences.