Journal
TETRAHEDRON
Volume 69, Issue 1, Pages 235-241Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tet.2012.10.040
Keywords
Fluorescent chemosensor; Click chemistry; Rhodamine conjugate; Quantum yield; Binding properties
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Funding
- National Science Council (NSC) of the Republic of China (Taiwan) [NSC 99-2923-E-006-004-MY3, NSC 98-2221-E-006-007-MY3]
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The simple yet efficient method for the detection of Cu2+ and Fe3+ by respective coordination of triazole triazole and triazole carbonate in aqueous media was achieved using the BisTriazole-Rhodamine B (BTRB) chemosensor. The addition of Cu2+ enhances the fluorescence intensity to 20 fold (Phi(f)=0.31) while Fe3+ enhances 14 fold (Phi(f)=0.12) in comparison with BTRB. Competitive experiments with BTRB-Cu2+ revealed that addition of Fe3+ displaces Cu2+ causes obvious fluorescence enhancement (2.8 fold). Application of BTRB probe was exploited by conducting a copper catalyzed model reaction from which total copper content in the catalytic product as an impurity was determined as 356 ppm. (C) 2012 Elsevier Ltd. All rights reserved.
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