期刊
TETRAHEDRON LETTERS
卷 51, 期 26, 页码 3422-3425出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tetlet.2010.04.100
关键词
Fluorescent sensor; Hg2+; Pyrene
资金
- University of Nebraska
A new pyrene-containing fluorescent sensor has been synthesized from 2,3,3-trimethylindolenine. Spectroscopic and photophysical properties of sensor are presented. The large change in fluorescence intensity (I/I-0 = 0.13) at 381 nm and affinity to Hg2+ over other cations such as K+, Na+, Ca2+, Mg2+, Pb2+, and Cu2+ make this compound a useful chemosensor for Hg2+ detection in hydrophilic media. The sensor (6.0 x 10(-6) M) displays significant fluorescence quenching upon addition of Hg2+ in pH 7.4 HEPES buffer without excimer formation. Job's plot analysis shows the binding stoichiometry to be 2:1 (host/guest). Published by Elsevier Ltd.
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