流动注射-电化学-表面等离子体激元共振联用技术研究二茂铁硫醇氧化还原结构变化  

Study of the 11-ferrocenylalkanethiol Redox-Induced Structure Changes by Flow-Injection Electrochemical Surface Plasmon Resonance

作　　者：肖秀娟[1] 何永辉[1] 向娟[1] 任斌[2] 

机构地区：[1]中南大学化学化工院,湖南长沙410083 [2]厦门大学固体表面物理化学国家重点实验室,福建厦门361005

出　　处：《电化学》2010年第4期436-440,共5页Journal of Electrochemistry

基　　金：国家自然科学基金(20773165);教育部新世纪优秀人才计划(NCET-07-0865);湖南省杰出青年基金;厦门大学固体表面物理化学国家重点实验室开放课题项目资助

摘　　要：采用流动注射-电化学-表面等离子体激元共振联用技术研究了11-二茂铁基十一烷基-1-硫醇自组装膜在氧化还原过程中的构型变化.结果表明,二茂铁硫醇在氧化过程中,分子发生了两种结构变化:远离电极表面,烷基链与电极表面的夹角增大;分子上两个平行的戊基环绕着二茂铁-碳轴发生旋转.Redox-induced orientation changes of self-assembled monolayers（SAMs） of 11-ferrocenylundecanethiol（FcC11SH） were studied by the flow-injection electrochemical surface plasmon resonance（FI-EC-SPR）.Results indicated that there existed two mechanisms concerning the redox-induced structure change of the self-assembled monolayer of ferrocenylalkanethiols：the electrostatic repulsion between the positively charged surface and the ferricenium cation and that among the cations led to a decrease in the tilt angle of the alkanethiol chain;upon Fc oxidation,the Fc group rotated from a tilted conformation to a position where the cyclpentyldiene plane became perpendicular to the electrode.

关 键 词：自组装膜 二茂铁硫醇 倾斜角 Cp环 

分 类 号：O627.8[理学—有机化学]