Consideration of Molecular Structure in the Excited State to Design New Luminogens with Aggregation-Induced Emission

被引：141

作者：

Kokado, Kenta ^{[1
]}

Sada, Kazuki ^{[1
]}

机构：

[1] Hokkaido Univ, Fac Sci, Dept Chem, Kita Ku, Kita 10 Nishi 8, Sapporo, Hokkaido 0600810, Japan

来源：

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2019年 / 58卷 / 26期

关键词：

aggregation-induced emission; computational chemistry; excited states; materials science; photochemistry; TURN-ON FLUORESCENCE; CONICAL INTERSECTION; SUDDEN POLARIZATION; E/Z ISOMERIZATION; TETRAPHENYLETHYLENE DERIVATIVES; INTRAMOLECULAR ROTATION; TEMPERATURE-DEPENDENCE; PURE STEREOISOMERS; TORSIONAL MOTION; LIGHT-EMISSION;

D O I：

10.1002/anie.201814462

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Aggregation-induced emission (AIE) is a photoluminescence phenomenon in which an AIE luminogen (AIEgen) exhibits intense emission in the aggregated or solid state but only weak or no emission in the solution state. Understanding the mechanism of AIE requires consideration of excited state molecular geometry (for example, a pi twist). This Minireview examines the history of AIEgens with a focus on the representative AIEgen, tetraphenylethylene (TPE). The mechanisms of solution-state quenching are reviewed and the crucial role of excited-state molecular transformations for AIE is discussed. Finally, recent progress in understanding the relationship between excited state molecular transformations and AIE is overviewed for a range of different AIEgens.

引用

页码：8632 / 8639

页数：8

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