Comparison of the adsorption orientation for 2-mercaptobenzothiazole and 2-mercaptobenzoxazole by SERS spectroscopy

被引：30
|
作者：
Lee, Chul Jae [1 ]
Lee, Seung Yong [1 ]
Karim, Mohammad Rezaul [1 ]
Lee, Mu Sang [1 ]
机构：
[1] Kyungpook Natl Univ, Grad Sch, Dept Chem, Taegu 702701, South Korea
来源：
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY | 2007年 / 68卷 / 05期
关键词：
surface-enhanced Raman spectroscopy; MBT; MBO; silver mirror; silver sol;
D O I：
10.1016/j.saa.2007.02.008
中图分类号：
O433 [光谱学];
学科分类号：
0703 ; 070302 ;
摘要：
In this study, the adsorption orientation for 2-mercaptobenzothiazole (MBT) and 2-mercaptobenzoxazole (MBO) on to silver mirror and silver sol substrates have been studied by surface enhanced Raman scattering (SERS). The MBT and MBO were chemisorbed on both silver mirror and silver sol after deprotonation with a tilted orientation to the silver surfaces. The surface enhanced properties of MBT and MBO showed that the substrate of silver mirror was superior to the sliver sol. The SERS spectra of MBT and MBO revealed that both of the MBT and MBO were adsorbed on silver surfaces strongly by a common sulfur molecule and a sulfur atom from MBT and an oxygen atom from MBO. Therefore, the adsorption orientation of MBT and MBO was little tilted perpendicularly to the silver surfaces. The adsorption geometry did not undergo any significant changes in acidic and basic solutions. It showed that the adsorption orientation for MBT and MBO were stable in the both solutions. (c) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码：1313 / 1319
页数：7
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