同位素分析儀-甲醛分析儀-北京世紀朝陽科技發展有限公司

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測量應用案例-20210407

2021-05-17 18:47:49

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文獻名:Aggregation-induced emission enhancement (AIEE)-active tetraphenylethene (TPE)-based chemosensor for CN?

 

 

作者Yilan Wanga; Hongliang Liua; Zhao Chena; Shouzhi Puab

a  Jiangxi Key Laboratory of Organic Chemistry, Jiangxi Science and Technology Normal University, Nanchang 330013, PR China

b  Department of Ecology and Environment, Yuzhang Normal University, Nanchang 330103, PR China

 

 

 

摘要:An aggregation-induced emission enhancement (AIEE)-active fluorescent sensor has been successfully designed and synthesized, combining the AIE effect of tetraphenylethylene (TPE) with the cyanide acceptor of phenanthro[9,10-d]imidazole. The sensor exhibits not only the property of AIEE in DCM/n-hexane or THF/H2O, but also the phenomenon of mechanofluorochromic (MFC). It displays large Stokes shift (107 nm) due to the intramolecular charge transfer (ICT) process. The cation of CN? boosts the ICT process to make the greater Stokes shift (184 nm) with the fluorescent color vary from blue-green to sodium-yellow and visually turning from light yellow to dark yellow in the naked eyes. The results of Job's plot, ESI-MS and the DFT calculations provide the stoichiometric ratio and electronic properties of the sensor. Furthermore, the sensor could be applied to qualitative and quantitative detection of CN? on test paper strips.

 

 

關鍵詞:Aggregation-induced emission enhancement; Mechanofluorochromic; Fluorescent sensor; Cyanide

 


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同位素分析儀-甲醛分析儀-北京世紀朝陽科技發展有限公司 同位素分析儀-甲醛分析儀-北京世紀朝陽科技發展有限公司
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