National Changhua University of Education Institutional Repository : Item 987654321/1561
English  |  正體中文  |  简体中文  |  全文笔数/总笔数 : 6491/11663
造访人次 : 24628945      在线人数 : 106
RC Version 3.2 © Powered By DSPACE, MIT. Enhanced by NTU Library IR team.
搜寻范围 进阶搜寻

jsp.display-item.identifier=請使用永久網址來引用或連結此文件: http://ir.ncue.edu.tw/ir/handle/987654321/1561

题名: Exploring the Interactions between Gold Nanoparticles and Analytes through Surface-Assisted Laser Desorption/Ionization Mass Spectrometry
作者: Lin, Y.-W.;Chen, W.-T.;Chang, H.-T.
贡献者: 化學系
日期: 2010
上传时间: 2010-11-10T06:58:38Z
摘要: Surface-assisted laser desorption/ionization mass spectrometry (SALDI-MS) is applied to provide strong evidence for the chemical reactions of functionalized gold nanoparticles (Au NPs) with
analytes – Hg2R ions induced MPA Au NPs aggregation in the presence of 2,6-pyridinedicarboxylic acid (PDCA) and H2O2 induced fluorescence quenching of 11-MUA Au NDs. PDCA-Hg2R-MPA coordination is responsible for Au NPs aggregation, while the formation of 11-MUA disulfide
compounds that release into the bulk solution is responsible for H2O2-induced fluorescence quenching. In addition to providing information about the chemical structures, SALDI-MS is also selective and sensitive for the detection of Hg2R ions and H2O2. The limits of detection (LODs) for Hg2R ions and H2O2 by SALDI-MS were 300nM and 250mM, respectively. The spot-to-spot variations in the two studies were both less than 18% (50 sample spots). Our results reveal that SALDI-MS can be used to study analyte-induced changes in the surface properties of nanoparticles.
關聯: Rapid Commun. Mass Spectrom., 24, 933-938
显示于类别:[化學系] 期刊論文

文件中的档案:

没有与此文件相关的档案.



在NCUEIR中所有的数据项都受到原著作权保护.

 


DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library IR team Copyright ©   - 回馈