Wide‐range color‐tunable afterglow emission by the modulation of triplet exciton transition processes based on buckybowl structure
Wide‐range color‐tunable afterglow emission by the modulation of triplet exciton transition processes based on buckybowl structure
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DOI：
10.1002/agt2.310
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发表时间：
2023-01
期刊：
影响因子：
18.8
通讯作者：
Yongfeng Zhang;Chenchen Xiong;Wenbo Wang;Wenbo Dai;Yue Ren;Junming Xia;Gengchen Li;Jianbing Shi;B. Tong;Xiaoyan Zheng;X. Shao;Zhengxu Cai;Yuping Dong
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文献类型：
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作者：
Yongfeng Zhang;Chenchen Xiong;Wenbo Wang;Wenbo Dai;Yue Ren;Junming Xia;Gengchen Li;Jianbing Shi;B. Tong;Xiaoyan Zheng;X. Shao;Zhengxu Cai;Yuping Dong
巴基碗结构作为多环芳香族材料的非均匀静电势分布，具有独特的光电性能。在这项工作中，OTC被用于三重态激子跃迁过程的动态调制。我们选择了五种具有不同功能单元的宿主分子，从而在宿主/客体系统中提供不同的分子间相互作用。因此，通过调整OTC在不同载体中的三重态激子跃迁过程，将延迟发射从536 nm调节到624 nm。实验数据和理论计算表明，OTC -单体的系统间交叉（ISC）过程和OTC -聚集体的反向系统间交叉（RISC）过程之间的竞争导致了三重态跃迁行为的变化。本研究证明了巴基碗基发光材料在控制三重态激子跃迁过程中的优越结构，并为持久余辉发光材料的设计提供了新的视角。
Buckybowl structures as non‐uniform electrostatic potential distributions of polycyclic aromatic materials show a unique photoelectric performance. In this work, OTC was utilized for dynamic modulation of triplet exciton transition processes. Five host molecules with different functional units were selected, thus providing different intermolecular interactions in the host/guest systems. Therefore, the delayed emissions were regulated from 536 to 624 nm via the tuning of the triplet exciton transition processes of OTC in different hosts. Experimental data and theoretical calculations revealed that the varied triplet transition behaviors resulted from the competition between the intersystem crossing (ISC) process of OTC‐monomer and the reverse intersystem crossing (RISC) process of OTC‐aggregates. This work proves the superior structure of buckybowl‐based luminophore for controlling triplet exciton transition processes and supplies a new perspective for persistent afterglow luminophore design.