Fluorogenic Hg2+-selective chemodosimeter derived from 8-hydroxyquinoline |
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Authors: | Song Ki Cheol Kim Jun Soo Park Sang Mi Chung Kee-Choo Ahn Sangdoo Chang Suk-Kyu |
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Institution: | Department of Chemistry, Chung-Ang University, Seoul 156-756, Korea. |
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Abstract: | reaction: see text] A new thioamide derivative of 8-hydroxyquinoline-benzothiazole was prepared, and its fluorogenic chemodosimetric behaviors toward transition-metal ions were investigated. The thioamide derivative showed highly Hg2+-selective fluorescence enhancing properties (167-fold) in 30% aqueous acetonitrile solution. The selective and sensitive signaling behaviors were found to originate from the Hg2+ ion induced transformation of the very weak fluorescent thioamide derivative into a highly fluorescent amide analogue. |
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