A novel route to copper(ii) detection using 'click' chemistry-induced aggregation of gold nanoparticles
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.
Citation
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
ISSN
School
Nanochemistry Research Institute
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