光激发
发光
聚集诱导发射
非平衡态热力学
材料科学
量子产额
产量(工程)
分子
纳米技术
荧光
化学
化学物理
激发
光电子学
有机化学
热力学
光学
复合材料
物理
工程类
电气工程
作者
Jian Gu,Bingbing Yue,Glib Baryshnikov,Zhongyu Li,Man Zhang,Shen Shen,Hans Ågren,Liangliang Zhu
出处
期刊:Research
[AAAS00]
日期:2021-01-01
卷期号:2021
被引量:12
标识
DOI:10.34133/2021/9862093
摘要
Aggregation-induced emission (AIE) has been much employed for visualizing material aggregation and self-assembly. However, water is generally required for the preparation of the AIE aggregates, the operation of which limits numerous material processing behaviors. Employing hexathiobenzene-based small molecules, monopolymers, and block copolymers as different material prototypes, we herein achieve AIE in pure organic phases by applying a nonequilibrium strategy, photoexcitation-controlled aggregation. This strategy enabled a dynamic change of molecular conformation rather than chemical structure upon irradiation, leading to a continuous aggregation-dependent luminescent enhancement (up to ~200-fold increase of the luminescent quantum yield) in organic solvents. Accompanied by the materialization of the nonequilibrium strategy, photoconvertible self-assemblies with a steady-state characteristic can be achieved upon organic solvent processing. The visual monitoring with the luminescence change covered the whole solution-to-film transition, as well as the in situ photoprocessing of the solid-state materials.
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