A novel route to copper(ii) detection using 'click' chemistry-induced aggregation of gold nanoparticles
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Authors
Hua, C.
Zhang, W.
De Almeida, S.
Ciampi, Simone
Gloria, D.
Liu, G.
Harper, J.
Gooding, J.
Date
2012Type
Journal Article
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Hua, C. and Zhang, W. and De Almeida, S. and Ciampi, S. and Gloria, D. and Liu, G. and Harper, J. et al. 2012. A novel route to copper(ii) detection using 'click' chemistry-induced aggregation of gold nanoparticles. Analyst. 137 (1): pp. 82-86.
Source Title
Analyst
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School
Nanochemistry Research Institute
Collection
Abstract
A simple colorimetric method for the detection of copper ions in water is described. This method is based on the 'click' copper(i)-catalyzed azide-alkyne cycloaddition reaction and its use in promoting the aggregation of azide-tagged gold nanoparticles by a dialkyne cross-linker is described. Nanoparticle cross-linking, evidenced as a colour change, is used for the detection of copper ions. The lowest detected concentration by the naked eye was 1.8 µM, with the response linear with log(concentration) between 1.8-200 µM. The selectivity relative to other potentially interfering ions was evaluated.
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