文献类型：期刊文献

英文题名：Gold-nanoparticle, functionalized-porous-polymer monolith enclosed in capillary for on-column SERS detection

作者：Pan, Yingcheng;Wang, Xuan;Zhang, Han;Kang, Yan;Wu, Ting;Du, Yiping[1]

机构：[1]E China Univ Sci & Technol, Shanghai Key Lab Funct Mat Chem, Shanghai 200237, Peoples R China; E China Univ Sci & Technol, Res Ctr Anal & Testing, Shanghai 200237, Peoples R China

年份：2015

卷号：7

期号：4

起止页码：1349

外文期刊名：ANALYTICAL METHODS

收录：;EI(收录号：20150800564741);WOS:【SCI-EXPANDED(收录号:WOS:000349679900016)】；

基金：This work was supported by the National Natural Science Foundation of China (21205041) and the Science and Technology Commission of Shanghai Municipality (14142201400).

语种：英文

外文关键词：Metal nanoparticles - Substrates - Acrylic monomers - Ethylene - Surface scattering - Synthesis (chemical) - Raman scattering - Silica

摘要：In this work, gold-nanoparticle, functionalized glycidyl methacrylate-ethylene dimethacrylate (GNPs@GMA-EDMA), porous-polymer monoliths were prepared via an on-site synthesis method and enclosed in silica capillary as sensitive, uniform, and stable surface-enhanced Raman scattering (SERS) substrates. The on-column detection technique was used for SERS detection. The 4-mercaptopyridine (4-Mpy) at 1 x 10(-7) M concentration was successfully detected on the SERS substrate. Uniformity was examined by collecting 4-Mpy spectra at 10 random locations on the capillary column, and the relative standard deviations (RSDs) were 18.74% and 15.83% for corresponding Raman intensities. The GNPs@GMA-EDMA showed great SERS-active stability in the first month after synthesis and could provide stable SERS signals of 4-Mpy within 8 months. The detection ability of this SERS-active monolith for pesticides, dyes and biomolecules was demonstrated by phosmet, crystal violet and adenine. Phosmet in real samples was analyzed by this substrate, with recovery of 89.78-109.91% and RSDs of 4.14-8.78%. The SERS-active porous polymer monoliths could serve as a novel SERS substrate for rapid in situ analysis on a capillary column.