高等学校化学学报2012，Vol.33Issue(10)：2308-2314,7.DOI:10.7503/cjcu20120001
复合SERS基底的构建及性质
Construction of Composite Surface-enhanced Raman Scattering(SERS)Substrates by Silver Nanoparticle Assembly
摘要
Abstract
Metal-molecule-metal sandwich structures on quartz slides were constructed by the self-assembly of Ag nanoparticles with various shapes via p-aminothiophenol ( PATP) molecules as linkers. These sandwich structures were characterized by extinction spectroscopy and surface-enhanced Raman scattering (SERS) spec-troscopy using different excitation lasers. The results demonstrated that SERS intensities of PATP in sandwich structures were much stronger than those on silver nanoparticle monolayers. The calculated enhancement factors (EFs) of PATP on the composite SERS substrates showed that the large EFs appeared when the SPR peaks of SERS substrates well matched excitation lines. In these sandwich structures, PATP molecules tended to form a new surface species (p,p'-dimercaptoazobenzene, DMAB) under a laser-induced catalytic coupling reaction. In addition, the laser-induced catalytic coupling reaction was closely related to excitation wavelengths.关键词
银纳米粒子/电磁场增强/表面增强拉曼散射Key words
Silver nanoparticles/ Electromagnetic field enhancement/ Surface-enhanced Raman scattering (SERS)分类
化学化工引用本文复制引用
郭洪云,徐抒平,唐彬,陶金龙,潘凌云,徐蔚青..复合SERS基底的构建及性质[J].高等学校化学学报,2012,33(10):2308-2314,7.基金项目
国家自然科学基金(批准号:91027010,21073073,20903043,20973075)、高等学校博士学科点专项科研课题(批准号:20090061120089)和超分子结构与材料国家重点实验室开放课题(批准号:SKLSSM201125)资助. （批准号:91027010,21073073,20903043,20973075）
