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A Benzothiazole-Based Fluorescence Turn-on Sensor for Copper(II)
被引:17
作者:
Kim, Gyeongjin
[1
]
Choi, Donghwan
[1
]
Kim, Cheal
[1
]
机构:
[1] Seoul Natl Univ Sci & Tech SNUT, Dept Fine Chem, Seoul 01088, South Korea
基金:
新加坡国家研究基金会;
关键词:
Benzothiazole;
Fluorescence chemosensor;
Copper ion;
Turn on;
SELECTIVE DETECTION;
AQUEOUS-SOLUTION;
COLORIMETRIC CHEMOSENSOR;
SEQUENTIAL DETECTION;
CU2+ ION;
PROBE;
RECOGNITION;
DERIVATIVES;
CELLS;
D O I:
10.1007/s10895-021-02752-x
中图分类号:
Q5 [生物化学];
学科分类号:
071010 ;
081704 ;
摘要:
A new benzothiazole-based chemosensor BTN (1-((Z)-(((E)-3-methylbenzo[d]thiazol-2(3H)-ylidene)hydrazono)methyl)naphthalen-2-ol) was synthesized for the detection of Cu2+. BTN could detect Cu2+ with "off-on" fluorescent response from colorless to yellow irrespective of presence of other cations. Limit of detection for Cu2+ was determined to be 3.3 mu M. Binding ratio of BTN and Cu2+ turned out to be a 1:1 with the analysis of Job plot and ESI-MS. Sensing feature of Cu2+ by BTN was explained with theoretical calculations, which might be owing to internal charge transfer and chelation-enhanced fluorescence processes.
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页码:1203 / 1209
页数:7
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