Journal
DYES AND PIGMENTS
Volume 83, Issue 3, Pages 324-327Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.dyepig.2009.05.010
Keywords
Benzothiazole; Semisquaraine; Hg2+ ion; Chemosensor; Fluorescence
Funding
- Korea government (MEST) [R11-2008-105-03001-0]
- Kungpook National University Fund
- National Research Foundation of Korea [R11-2008-105-03001-0] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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A novel semisquarylium dye was synthesized by the reaction between 3,4-dibutoxy-3-cyclobutene-1,2-dione and a benzothiazolium salt and its metal ion sensing properties were investigated using absorption and emission spectroscopy. These misquarylium exhibited high selectivity for Hg2+ ions, as compared with Ca2+, Pb2+, Al3+, Ce2+, Ba2+, Ni2+, Cd2+, Zn2+ and Mg2+ ions in DMSO/H2O (9:1, v/v), which was attributed to the formation of a 2:1 BSQ:Hg2+ coordination complex. the formation of which was supported by the calculated geometry of the complex. (C) 2009 Elsevier Ltd. All rights reserved.
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