A novel route to copper(ii) detection using 'click' chemistry-induced aggregation of gold nanoparticles

Carol Hua, William H. Zhang, Swahnnya R M De Almeida, Simone Ciampi, Danmar Gloria, Guozhen Liu, Jason B. Harper, J. Justin Gooding*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

70 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)82-86
Number of pages5
JournalAnalyst
Volume137
Issue number1
DOIs
Publication statusPublished - 7 Jan 2012
Externally publishedYes

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