Journal
SENSORS AND ACTUATORS B-CHEMICAL
Volume 225, Issue -, Pages 167-173Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2015.11.039
Keywords
Benzothiazole derivative; Chemosensor; Zinc ion; Fluorescent enhancement
Funding
- National Natural Science Foundation of China [21204054]
- Priority Academic Program Development of Jiangsu Higher Education Institutions
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Chemical detection of Zn2+ ion plays an important role in both environmental and biological systems. In this paper, a new chemosensor based on benzothiazole was designed and synthesized. The fluorescent intensity of the chemosensor enhanced significantly with existence of Zn2+ ion. The control experiments show that the analogous ions (Pb2+, Co2+, Ni2+, Mn2+, Cu2+, Mg2+, Cd2+, Na+ and K+) do not have fluorescence enhancement effect; and some of them even quench the fluorescence dramatically. The intensity increase upon addition of Zn2+ is due to the coordination between Zn2+ and benzothiazole. This chemosensor shows a high sensitivity for Zn2+ with a detection limit as low as 7.5 x 10(-7) mol L-1 and high selectivity through a 'turn-on' fluorescence response over the other tested metal ions. (C) 2015 Elsevier B.V. All rights reserved.
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