Aggregation-Induced Emission Enhancement of Aryl-Substituted Pyrrole Derivatives
Aggregation-Induced Emission Enhancement of Aryl-Substituted Pyrrole Derivatives
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DOI：
10.1021/jp108254g
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发表时间：
2010-12-23
影响因子：
3.3
通讯作者：
Dong, Yuping
中科院分区：
文献类型：
--
作者：
Feng, Xiao;Tong, Bin;Dong, Yuping
研究了五种芳基取代吡咯衍生物在THF-水溶液中聚集过程中的结构与发光性能之间的关系。然而，只有pentaphenylpyrrole清楚地显示出聚集诱导的发射增强（AIEE）现象。通过对这些吡咯衍生物的光学性质和单晶结构的比较，我们认为，这些吡咯衍生物的扭曲构型阻碍了共轭发色团的平行取向，同时限制了分子内旋转（RIR）效应，这是导致AIEE现象的主要原因。
The relationship between the structures and light emission properties of five aryl-substituted pyrrole derivatives was studied during aggregation in THF-water mixtures. Only pentaphenylpyrrole clearly shows, however, an aggregation-induced emission enhancement (AIEE) phenomenon. On comparison of the optical properties and single-crystal structures of these pyrrole derivatives, it is suggested that the more twisted configuration which prevented parallel orientation of conjugated chromophores combined with the restricted intramolecular rotation (RIR) effect was the main cause of the AIEE phenomenon.