Aggregation-induced emission enhancement (AIEE)-active tetraphenylethene (TPE)-based chemosensor for CN-

被引：39

作者：

Wang, Yilan ^{[1
]}

Liu, Hongliang ^{[1
]}

Chen, Zhao ^{[1
]}

Pu, Shouzhi ^{[1
,2
]}

机构：

[1] Jiangxi Sci & Technol Normal Univ, Jiangxi Key Lab Organ Chem, Nanchang 330013, Jiangxi, Peoples R China

[2] Yuzhang Normal Univ, Dept Ecol & Environm, Nanchang 330103, Jiangxi, Peoples R China

来源：

SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY | 2021年 / 245卷

关键词：

Aggregation-induced emission enhancement; Mechanofluorochromic; Fluorescent sensor; Cyanide; ROOM-TEMPERATURE PHOSPHORESCENCE; RATIOMETRIC FLUORESCENT-PROBE; FLUOROGENIC PROBE; CYANIDE IONS; SELECTIVE CHEMOSENSOR; CONVENIENT SYNTHESIS; GOLD(I) COMPLEX; RED EMISSION; CARBAZOLE; SENSOR;

D O I：

10.1016/j.saa.2020.118928

中图分类号：

O433 [光谱学];

学科分类号：

0703 ; 070302 ;

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. (C) 2020 Elsevier B.V. All rights reserved.

引用

页数：8

共 56 条

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