Aggregation-Induced Emission and Aggregation-Promoted Photo-oxidation in Thiophene-Substituted Tetraphenylethylene Derivative

作者：Zhu, Linna^*; Wang, Rui; Tan, Luxi; Liang, Xianfeng; Zhong, Cheng^*; Wu, Fei^*

来源：Chemistry-An Asian Journal, 2016, 11(20): 2932-2937.

DOI：10.1002/asia.201601003

• aggregation induced emission
• aggregation promoted photocyclization
• fluorescence
• tetraphenylethylene
• thiophene

Aggregation-induced emission combined with aggregation-promoted photo-oxidation has been reported only in two works quite recently. In fact, this phenomenon is not commonly observed for AIE-active molecules. In this work, a new tetraphenylethylene derivative ( TPE-4T) with aggregation-induced emission ( AIE) and aggregation-promoted photo-oxidation was synthesized and investigated. The pristine TPE-4T film exhibits strong bluish-green emission, which turns to quite weak yellow emission after UV irradiation. Interestingly, after solvent treatment, the weakly fluorescent intermediate will become bright-yellow emitting. Moreover, the morphology of the TPE-4T film could be regulated by UV irradiation. The wettability of the TPE-4T microcrystalline surface is drastically changed from hydrophobic to hydrophilic. This work contributes a new member to the aggregation induced photo-oxidation family and enriches the photooxidation study of tetraphenylethylene derivatives.

• 出版日期2016-10
• 单位武汉大学; 重庆大学; 中国科学院重庆绿色智能技术研究院; 西南大学