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Dalton Trans. 2013 Aug 28;42(32):11465-70. doi: 10.1039/c3dt50991e. Epub 2013 Jul 4.

A new fluorescent probe for distinguishing Zn2+ and Cd2+ with high sensitivity and selectivity.

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1
State Key Laboratory of Silicon Materials, Cyrus Tang Center for Sensor Materials and Applications, Department of Materials Science and Engineering, Zhejiang University, Hangzhou, P R China.

Abstract

A new fluorescence probe for distinguishing Zn(2+) and Cd(2+) is designed and synthesized. For the first time to our knowledge, this probe can recognize similar metal ions by coherently utilizing intramolecular charge transfer (ICT) and different electronic affinities of various metal ions, instead of by selective coordination alone, which may be interfered with and lose its selectivity easily in a complicated environment, providing a distinct recognition even by the naked eye for Zn(2+) and Cd(2+) with the sensitivity at the ppb level. This design strategy may initiate a straightforward approach for the selective detection of various metal ions with similar chemical properties in extensive applications such as environmental, industrial, and bio-science.

PMID:
23824098
DOI:
10.1039/c3dt50991e
[Indexed for MEDLINE]
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