武汉工程大学学报2011，Vol.33Issue(8)：10-13,24,5.DOI:10.3969/j.issn.1674-2869.2011.08.003
硅基上端基为羧基自组装膜的制备及应用
Formation and application of the carboxy-terminated self-assembled monolayers on silicon wafer
摘要
Abstract
Cyano-terminated self-assembled mono layers (SAMs) were prepared on silicon wafer by the chemisorption of 4-(triethoxysilyl)-butyronitrile, followed by hydrolysis of the terminal groups in hydrochloric acid solution, and then the cyano groups were converted into carboxylic acid groups. Here we investigated the effects of the concentration of H+ , the reaction temperature and time of solution on the change of the top groups cyano into carboxylic acid. The disappearance of the absorption band of the C=N at 2 250 cm"1 and the appearance of the C-=0 at 1 715 cm-1 in FT-IR spectra region provide direct evidence for the conversion of cyano to carboxyl groups. After the cyano were converted into carboxyl, the surface of SAM became hydrophilic and the water contact angle fell from approxiately 60° to 30°. Based on the ability of the carboxyl groups of the monolayer to bind Ag+ , followed by the reduction of Ag+ to Ag° with NaBH4, silver nanoparticles were generated on the carboxy-terminated SAMs surface. AFM image show the size of the silver nanoparticles was around 9 nm. These results demonstrated that the carboxy-terminated SAMs were prepared on silver wafer and could be used as a template for the formation of metal nanoparticles.关键词
硅基/自组装膜/羧基/金属纳米粒子Key words
silicon wafer/ self-assembled monolayers/ carboxyl group/ mental nanoparticles分类
信息技术与安全科学引用本文复制引用
毛强强,熊芳馨,赵静,刘善堂..硅基上端基为羧基自组装膜的制备及应用[J].武汉工程大学学报,2011,33(8):10-13,24,5.基金项目
国家自然科学基金(20873097,21071113) （20873097,21071113）
武汉市学科带头人计划(200951830551) （200951830551）
湖北省教育厅科学技术研究重大项目(Z20091502) （Z20091502）
