Adsorption of 2-mercaptopyridine and 4-mercaptopyridine on a silver surfaces investigated by SERS spectroscopy
Adsorption of 2-mercaptopyridine and 4-mercaptopyridine on a silver surfaces investigated by SERS spectroscopy
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DOI：
10.1016/j.jiec.2012.06.009
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发表时间：
2012-11-25
影响因子：
6.1
通讯作者：
Jung, Maeng Joon
中科院分区：
文献类型：
--
作者：
Do, Won Hui;Lee, Chul Jae;Jung, Maeng Joon
本研究利用表面增强拉曼散射（SEAS）技术研究了2-巯基吡啶（2-MPY）和4-巯基吡啶（4-MPY）在银和银溶胶基底上的散射特性。2-MPY和4-MPY的表面增强性能表明，银镜基底上级银溶胶基底。分别采用Tollen法和γ辐照法制备了银镜和银溶胶基片。紫外-可见光谱表明，银纳米粒子通过该方法产生。发现2-MPY和4-MPY分子在银和银溶胶基底上的Sers光谱存在很大差异。从Sers数据的分析，这表明，2-MPY是通过其S原子的化学吸附到银表面在垂直的取向，而4-MPY是通过S原子和N原子键合到银表面假设倾斜取向。(C)2012年韩国工业与工程化学学会。Elsevier B. V.出版，保留所有权利。
In this study, the 2-mercaptopyridine (2-MPY) and 4-mercaptopyridine (4-MPY) on to silver mirror and silver sol substrates have been studied by surface enhanced Raman scattering (SEAS). The surface enhanced properties of 2-MPY and 4-MPY showed that the substrate of silver mirror was superior to the sliver sol. The silver mirror and silver sol substrates were prepared by Tollen's and gamma irradiation method respectively. UV-visible spectra indicate that Ag nanoparticles were produced by this method. Considerable differences were found in the SERS spectra of 2-MPY and 4-MPY molecules onto silver mirror and silver sol substrates. From the analysis of the SERS data, it was evidenced that 2-MPY was chemisorbed through its S atom to Ag surfaces at a perpendicular orientation, whereas 4-MPY was bonded to Ag surface via the S atom and N atom assuming a tilted orientation. (C) 2012 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.