Ratiometric sensing of fluoride anion through selective cleavage of Si-O bond

被引:31
作者
Dhanunjayarao, Kunchala [1 ]
Mukundam, Vanga [1 ]
Venkatasubbaiah, Krishnan [1 ]
机构
[1] NISER, Sch Chem Sci, Inst Phys Campus, Bhubaneswar 751005, Orissa, India
关键词
Imidazole; ESIPT; Fluoride ion; Fluorescent probe; INTRAMOLECULAR PROTON-TRANSFER; FLUORESCENT CHEMOSENSOR; ION COMPLEXATION; PET; SENSOR; CHEMODOSIMETER; NANOPARTICLES; COPOLYMERS; PROBES; WATER;
D O I
10.1016/j.snb.2016.03.090
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
A new imidazole-based ratiometric fluorescent probe for fluoride anion was designed and synthesized. The sensing abilities of the probe towards various anions were studied by absorption and emission spectroscopies in dimethylsulfoxide (DMSO) as well as in DMSO/H2O. The spectroscopic studies reveal that the signalling mechanism involves the release of excited state intramolecular proton transfer (ESIPT) activated imidazole via Si-O bond cleavage. (C) 2016 Elsevier B.V. All rights reserved.
引用
收藏
页码:175 / 180
页数:6
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