標題: Colorimetric detection of Al3+ ions using triazole-ether functionalized gold nanoparticles
作者: Chen, Yu-Ching
Lee, I-Lin
Sung, Yi-Ming
Wu, Shu-Pao
應用化學系
Department of Applied Chemistry
關鍵字: Colorimetric sensor;Al3+;Gold nanoparticles;Triazole
公開日期: 15-十二月-2013
摘要: A sensitive, selective colorimetric Al3+ detection method has been developed by using triazole-ether functionalized gold nanoparticles (TTP-AuNPs). Gold nanoparticles were prepared by reducing HAuCl4 with sodium borohydride in the presence of 5-(1,2-dithiolan-3-yl)-N-(prop-2-yn-1-yl)pentanamide (TP). The azide part of 2-[2-(2-azidoethoxy)ethoxy]ethanol and the acetylene part of TP were combined to form a triazole structure through a click reaction. Aggregation of TTP-AuNPs was induced immediately in the presence of Al3+ ions, yielding a color change from red to blue. This Al3+-induced aggregation of TTP-AuNPs was monitored first with the naked eye and then UV-vis spectroscopy with a detection limit of 18.0 nM. The TTP-AuNPs showed excellent selectivity for Al3+, compared to other metal ions (Ag+, Ca2+, Cd2+, Co2+, Cu2+, Cr3+, Fe2+, Fe3+, Hg2+, Mg2+, Mn2+, Ni2+, Pb2+, and Zn2+). In addition, TTP-AuNPs were used to detect Al3+ in sea water samples, with low interference. (C) 2013 Elsevier B.V. All rights reserved.
URI: http://dx.doi.org/10.1016/j.talanta.2013.08.054
http://hdl.handle.net/11536/23412
ISSN: 0039-9140
DOI: 10.1016/j.talanta.2013.08.054
期刊: TALANTA
Volume: 117
Issue: 
起始頁: 70
結束頁: 74
顯示於類別:期刊論文


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