标题：Preparation of High SERS-Active Silver Films in an Aqueous Solution of Room Temperature Ionic Liquids
作者：Xia, Jiarui; Xia, Lixin; Gong, Ke; Liu, Yuan; Liu, Wenli; Wang, Gaili; Su, Xiaoyong
作者机构：[Xia, Lixin; Liu, Yuan; Liu, Wenli; Wang, Gaili; Su, Xiaoyong] Liaoning Univ, Coll Chem, Shenyang 110036, Peoples R China.; [Xia, Jiarui] Shandong U 更多
会议名称：10th China International Nanoscience and Technology Symposium
会议日期：OCT 26-30, 2011
关键词：Room temperature ionic liquid; surface enhanced Raman scattering; halide; ion; silver and 4-Mercaptobenzoic acid
摘要：A very simple method for preparation of high SERS-active silver films was reported in the paper. The process is performed by reduction of silver nitrate with glucose on a borosilicate cover glass in an aqueous solution of 1-n-butyl-3-methylimidazolium tetrafluoroborate (BMIMBF4). The silver film shows excellent SERS activity in the presence of adsorbed 4-mercaptobenzoic acid (4-MBA) with excitation at 632.8 nm, and the enhancement factor reaches similar to 3 x 10(5). Moreover, there exists a synergistic effect on SERS signals for BMIMBF4 and NaCl. The synthetic method reported here suggests a very promising route for preparation of sensitive SERS-active substrates.