期刊
TETRAHEDRON LETTERS
卷 47, 期 4, 页码 497-500出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tetlet.2005.11.060
关键词
diazatetrathia-crown ether; fluoroionophore; pyrene; Hg2+-selectivity; chemosensor
Bis(pyrene) derivative of diazatetrathia-crown ether has been prepared and its Hg2+-selective fluoroionophoric properties were investigated. The compound showed a pronounced Hg2+-selectivityand other metal ions except for Cu2+ showed almost no discernible responses. The Hg2+-selectivity of the compound was also confirmed by the competitive experiments performed in the presence of physiologically important metal ions and the detection limit was found to be 1.6 x 10(-6) M. The prominent selective and efficient fluorescence quenching behavior could be utilized as a new chemosensing system for the analysis of toxic Hg2+ ions in aqueous environment. (c) 2005 Elsevier Ltd. All rights reserved.
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