期刊
CHEMISTRY-AN ASIAN JOURNAL
卷 11, 期 20, 页码 2932-2937出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/asia.201601003
关键词
aggregation induced emission; aggregation promoted photocyclization; fluorescence; tetraphenylethylene; thiophene
资金
- National Natural Science Foundation of China [51203046, 51203121]
- Fundamental Research Funds for the Central Universities [XDJK2016C131, XDJK2016C129]
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.
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