一种用于现场快速检测的SERS基底的制备  

Preparation of a Kind of SERS-Active Substrates for Spot Fast Analysis

作　　者：纪南[1,2] 李志士[1] 赵冰[1] 邹勃[2] 

机构地区：[1]吉林大学超分子结构与材料国家重点实验室,吉林长春130012 [2]吉林大学超硬材料国家重点实验室,吉林长春130012

出　　处：《光谱学与光谱分析》2013年第2期387-389,共3页Spectroscopy and Spectral Analysis

基　　金：国家自然科学基金项目(20921003;20973074);高等学校博士学科点专项科研基金项目(20110061110017);教育部引智计划项目(B06009);吉林省科技厅项目(20110338)资助

摘　　要：利用化学自组装方法,首先在色谱玻璃小瓶的内壁吸附上一层PDDA阳离子聚电解质,然后通过静电吸附作用将带有负电荷的银纳米粒子组装到内壁;比较了不同色谱瓶作为吸附银纳米粒子的载体的优缺点;用紫外-可见吸收光谱监测吸附到玻璃瓶内壁的银纳米粒子的表面等离子体共振峰,跟踪银纳米粒子的组装情况;利用对-巯基苯胺作为探针分子研究了基底的表面增强拉曼散射(SERS)活性。结果表明:所制备的SERS小瓶基底具有良好的SERS活性,并且使用简单,保存时间长,适合SERS现场快速检测的需要。A kind of SERS-active substrates was prepared using chemical self-assembly method, aiming at spot fast analysis using portable Raman spectrometer. PDDA was first absorbed on the inner wall of vials, and then Ag colloids were assembled on the inner wall. UV-Vis spectra and Raman spectra of two kinds of blank vials were investigated and the transparent vials were thought to be better for SERS-vials. UV-Vis spectra were used to monitor the assembly process of Ag colloids. SERS activity of our substrates was characterized using p-ATP as probing molecules.

关 键 词：SERS基底 自组装 银溶胶 

分 类 号：O657.3[理学—分析化学]