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Hg2+-selective chemosensor derived from 8-hydroxyquinoline having benzothiazole function in aqueous environment
- Issue Date
- Jun-2004
- Publisher
- KOREAN CHEMICAL SOC
- Keywords
- 8-hydroxyquinoline; benzothiazole; Hg2+ -selectivity; fluoroionophore
- Citation
- BULLETIN OF THE KOREAN CHEMICAL SOCIETY, v.25, no.6, pp 869 - 872
- Pages
- 4
- Journal Title
- BULLETIN OF THE KOREAN CHEMICAL SOCIETY
- Volume
- 25
- Number
- 6
- Start Page
- 869
- End Page
- 872
- ISSN
- 0253-2964
1229-5949
- Abstract
- Newly synthesized 8-hydroxyquinoline based benzothiazole derivative 2 showed a distinctive Hg2+-selectivity over other transition metal ions in aqueous solution. The fluorescence emission at 455 nm of 2 was completely quenched upon interaction with Hg2+ ions in dioxane-H2O system (9 : 1, v/v). The selectivity was decreased in the order of Hg2+ much greater than Cu2+ > Cd2+ > Pb2+ approximate to Zn2+ approximate to Ni2+, and Hg2+ concentration dependent fluorescence quenching profile was observed in the presence of common interfering metal ions as background. The fluorescence behavior of 2 suggests that the prepared compound could be used as a fluorescent signaling subunit for the construction of new Hg2+-sensitive ON-OFF type supramolecular switching systems.
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Collections - College of Natural Sciences > Department of Chemistry > 1. Journal Articles
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