School of Chemistry, The University of New South Wales, Sydney, NSW 2052, Australia.
Analyst. 2012 Jan 7;137(1):82-6. doi: 10.1039/c1an15693d. Epub 2011 Oct 6.
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.
本文描述了一种用于水中铜离子检测的简单比色法。该方法基于“点击”铜（I）催化的叠氮化物-炔烃环加成反应，以及其在促进叠氮化物标记的金纳米粒子通过二炔交联剂聚集方面的应用。纳米粒子交联表现为颜色变化，用于检测铜离子。通过肉眼检测到的最低浓度为 1.8 μM，响应与 1.8-200 μM 之间的对数浓度呈线性关系。相对于其他潜在干扰离子的选择性进行了评估。
