分子内力
荧光
三苯胺
材料科学
拉曼光谱
光化学
化学
光电子学
光学
立体化学
物理
作者
Yongfeng Wan,Bo Li,Yuliang Liu,Dongwei Wang,Lixia Zhu,Qi Li,Hang Yin,Cailong Liu,Mingxing Jin,Jianbo Gao,ying shi
出处
期刊:Optics Express
[The Optical Society]
日期:2023-04-05
卷期号:31 (8): 13017-13017
被引量:1
摘要
The stimulus-responsive smart switching of aggregation-induced emission (AIE) features has attracted considerable attention in 4D information encryption, optical sensors and biological imaging. Nevertheless, for some AIE-inactive triphenylamine (TPA) derivatives, activating the fluorescence channel of TPA remains a challenge based on their intrinsic molecular configuration. Here, we took a new design strategy for opening a new fluorescence channel and enhancing AIE efficiency for (E)-1-(((4-(diphenylamino)phenyl)imino)methyl)naphthalen-2-ol. The turn-on methodology employed is based on pressure induction. Combining ultrafast and Raman spectra with high-pressure in situ showed that activating the new fluorescence channel stemmed from restraining intramolecular twist rotation. Twisted intramolecular charge transfer (TICT) and intramolecular vibration were restricted, which induced an increase in AIE efficiency. This approach provides a new strategy for the development of stimulus-responsive smart-switch materials.
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