標題: Colorimetric sensing of iodide based on triazole-acetamide functionalized gold nanoparticles
作者: Lee, I-Lin
Sung, Yi-Ming
Wu, Chien-Hou
Wu, Shu-Pao
應用化學系
Department of Applied Chemistry
關鍵字: Colorimetric sensor;Iodide;Gold nanoparticles;Triazole
公開日期: 1-四月-2014
摘要: We have modified gold nanoparticles (AuNPs) with triazole acetamide to obtain a material for the sensitive and selective colorimetric determination of iodide. The functionalized AuNPs were prepared by a reductive single chemical step using a Cu(I)-catalyzed click reaction. The presence of iodide ions induces the aggregation of these AuNPs and results in a color change from wine-red to purple. The iodide-induced aggregation can be detected visually with bare eyes, but also by photometry. The detection limit is as low as 15 nM. The method displays excellent selectivity for iodide over other anions due to the selective interaction with the amido groups of the triazole. The method was applied to the determination of iodide in spiked lake waters.
URI: http://dx.doi.org/10.1007/s00604-013-1150-0
http://hdl.handle.net/11536/24275
ISSN: 0026-3672
DOI: 10.1007/s00604-013-1150-0
期刊: MICROCHIMICA ACTA
Volume: 181
Issue: 5-6
起始頁: 573
結束頁: 579
顯示於類別:期刊論文


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  1. 000333705800011.pdf