利用去湿现象制备具有SERS活性的银纳米粒子图案  

Patterned SERS Active Substrate Fabricated by Dewetting of Silver Nanoparticles Solution

作　　者：宋薇[1] 朱迪夫[1] 李志士[1] 刘慧慧[1] 杨柏[1] 赵冰[1] 

机构地区：[1]吉林大学超分子结构与材料国家重点实验室,长春130012

出　　处：《高等学校化学学报》2008年第2期264-267,共4页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金(批准号:20473029;20573041;20773044)资助

摘　　要：构建了具有表面增强拉曼散射(SERS)活性的二维有序环状与盘状的银纳米粒子结构,利用CTAB包覆银纳米粒子的氯仿溶液直接在图案化的金基底上进行去湿,当改变银纳米粒子的浓度时可以得到不同的图案.利用原子力显微镜(AFM)对其结构进行了表征,以4-巯基吡啶作为探针分子,采用表面增强拉曼成像技术研究了这种基底的SERS活性,这将为SERS的研究开拓新的领域.We present a simple and controlled method for direct fabrication of ordered 2D arrays of Surfaceenhance Raman scattering（SERS） rings and disks substrate. Silver rings and disks are fabricated on patterned self-assembled monolayers on Au substrate by dewetting the solution of CTAB-coated silver nanoparticles in CHCl3. It is found that two different silver patterns assemblies are formed when the concentration of the silver nanoparticles in CHC13 solution changes. We characterized the formation and structure of these two different silver patterns assemblies using contact mode atomic force microscopy. Surface enhanced Raman mapping of 4- MPY SAM on this novel SERS active substrate are also investigated.

关 键 词：去湿 图案化 银纳米粒子 表面增强拉曼散射(SERS) 拉曼显微成像 

分 类 号：O657.37[理学—分析化学]