摘要
表面增强拉曼光谱(SERS)技术可极大增强传统拉曼光谱的信号强度,从而拓展拉曼光谱的应用范围.针对SERS技术在分析对象、分析环境的普适性和分析效率方面的限制,本文设计并发展了一种透明、柔性、自支撑SERS基底的制备、保存和使用方法.该基底由聚合物聚甲基丙烯酸甲酯(PMMA)和在其表面镶嵌的金属纳米结构组成,可以通过背入射法用于任意形貌样品表面的直接和在线检测.柔性SERS(Ag)基底在R6G水溶液表面的检测限小于1 pmol/L.
Surface enhanced Raman spectroscopy （SERS） can largely boost the Raman signal, and thus broaden the manifold potential applications of SERS. According to the current limitations on generality and efficiency, this work designed and developed a transparent, flexible and freestanding substrate and its preparation, conservation and operation procedures. The substrate consists of a polymer supporter and embedded metal nanostructures, which can be used for direct and on-line measurements of samples in various morphologies and circumstances. The detection limit of a flexible SERS（Ag） substrate is lower than 1 pmol/L.
出处
《中国科学：化学》
CSCD
北大核心
2013年第12期1839-1844,共6页
SCIENTIA SINICA Chimica
基金
科技部纳米研究国家重大科学研究计划(2011YQ0301240201,2011CB932601)
国家自然科学基金(51121091,50972001,21129001)资助
关键词
表面增强拉曼光谱
柔性基底
直接检测
长期保存
surface enhanced Raman spectroscopy （SERS）, flexible substrate, direct measurement, long shelf-time
