γ-氨丙基三甲氧基硅烷在铁电极表面吸附的表面增强拉曼光谱研究  

Adsorption Studies of γ-Aminopropyltrimethoxysilane on Iron Surfaces by Surface-Enhanced Raman Spectroscopy

作　　者：陈惠[1] 沈晓英[1] 顾伟[1] 顾仁敖[1] 刘进轩[2] 任斌[2] 田中群[2] 

机构地区：[1]苏州大学化学系,江苏苏州215006 [2]厦门大学化学系

出　　处：《光谱学与光谱分析》2004年第5期543-546,共4页Spectroscopy and Spectral Analysis

摘　　要：对在铁电极表面制备得到的γ 氨丙基三甲氧基硅烷 (γ APS)膜进行了研究。实验中对硅烷膜用现场表面增强拉曼散射光谱 (SERS)进行了表征 ,发现现场表面增强拉曼散射光谱 (SERS)是研究金属基底上γ APS结构非常有效的手段 ,SERS结果表明硅醇羟基和氨基发生了竞争吸附 ,且在外加电位、激光照射等条件的影响下吸附状态会发生一定变化 ,氨基的不同存在方式之间在过程中也会发生转变。The films of γ-aminopropyltrimethoxysilane (γ-APS) on iron electrode surfaces were studied. The silane films were characterized by in-situ Surface-Enhanced Raman Spectroscopy (SERS). It has been found that the potential-dependent Surface- enhanced Raman Spectroscopy are useful for diagnosing the formation and structure of γ-APS moieties bound onto the surface of metal substrates. Results of SERS indicated that the silanol and amino groups were adsorbed competitively on the metal surfaces. At the same time, the electrode potential, and illumination of laser all have great influence on the nature of these head groups. It was also found that the different states of amine transformed with the change in the potential.

关 键 词：γ-氨丙基三甲氧基硅烷 铁电极 表面吸附 表面增强拉曼光谱 硅醇羟基 氨基 竞争吸附 偶联剂 

分 类 号：O627.41[理学—有机化学]