以DDAB为模板的银纳米粒子多层膜制备及其表面增强拉曼效应  

Fabrication of Silver Nanoparticle Multilayer Films by Using DDAB Films as a Template and Their Application to Surface-enhanced Raman Scattering

作　　者：李艳彩[1] 周吉[2] 宋延涛[1] 孙长青[1] 

机构地区：[1]吉林大学化学学院 [2]吉林大学超分子结构与材料教育部重点实验室,长春130012

出　　处：《高等学校化学学报》2007年第8期1454-1457,共4页Chemical Journal of Chinese Universities

基　　金：国家'九七三'计划(批准号:G2000078102)资助

摘　　要：通过离子交换和静电相互作用,将银纳米粒子引入双十二烷基二甲基溴化铵(DDAB)模板中,获得了有序的银纳米粒子多层膜.用紫外-可见光谱(UV-V is)、循环伏安(CV)和原子力显微镜(AFM)对其进行了表征,并用小角X射线衍射(XRD)研究了DDAB模板和银纳米粒子多层膜的有序性结构.以4-巯基吡啶(4-MPY)为探针分子研究了银纳米粒子多层膜在表面增强拉曼(SERS)方面的应用,结果表明,4-MPY吸附在银纳米粒子多层膜上呈现很强的SERS信号,说明该多层膜可以用作高活性的SERS基底.Highly ordered silver nanoparticle muhilayer films were achieved conveniently by using didodecyldimethylammonium bromide（DDAB） films as a template. The obtained thin films were characterized by UV-Vis spectroscopy, cyclic vohammerty （CV） and atomic force microscopy （AFM） in detail. The well-ordered superlattice structure of the DDAB template and the silver nanoparticle muhilayer films were also identified by X-ray diffraction（XRD）. The application of the as-prepared silver nanoparticle muhilayer films in surface-enhanced Raman spectroscopy （SERS） was investigated by using 4-mercaptopyridine （4-MPY） as the probe molecules. It was found that the silver nanoparticle muhilayer films exhibied a remarkable enhancement ability, and can be used as SERS substrates.

关 键 词：DDAB模板 银纳米粒子多层膜 表面增强拉曼散射 4-巯基吡啶 

分 类 号：O657.37[理学—分析化学]