CNTs/AgNPs复合结构的微流控表面增强拉曼散射实验  

Microfluidic Surface-Enhanced Raman Scattering Experiment Using CNTs/AgNPs Composite Structure

作　　者：张晓蕾[1,2] 张洁 朱永[1] Zhang Xiaolei;Zhang Jie;Zhu Yong(Key Laboratory of Optoelectronic Technology&Systems,Ministry of Education,College of Optoelectronic Engineering,Chongqing University,Chongqing 400044,China;Chongqing Municipal Level Key Laboratory of Photoelectric Information Sensing and Transmission Technology,College of Optoelectronic Engineering,Chongqing University of Posts and Telecommunications,Chongqing 400065,China)

机构地区：[1]重庆大学光电工程学院光电技术及系统教育部重点实验室,重庆400044 [2]重庆邮电大学光电工程学院光电信息感测与传输技术重庆市重点实验室,重庆400065

出　　处：《中国激光》2019年第10期329-335,共7页Chinese Journal of Lasers

基　　金：国家自然科学基金(61875024);重庆市自然科学基金面上项目(cstc2019jcyj-msxmX0639);重庆大学人才项目(cqu2018CDHB1A07)

摘　　要：采用化学还原法制备碳纳米管/银纳米粒子(CNTs/AgNPs)表面增强拉曼散射(SERS)活性基底,采用模塑法构建具有SERS活性的聚二甲基硅氧烷(PDMS)微流控系统,以浓度为10-7 mol/L的罗丹明6G(R6G)溶液作为探针分子,进行相应的实验研究。实验结果验证了CNTs/AgNPs增强基底在微通道的拉曼测试的可行性,此外还测试分析微通道内不同位置和不同时刻的探针分子拉曼信号的变化情况。A carbon nanotubes/Ag nanoparticles(CNTs/AgNPs)surface-enhanced Raman scattering(SERS)-active substrate is prepared by the chemical reduction method,and a polydimethylsiloxane(PDMS)microfluidic system exhibiting SERS activity is constructed by using the molding method.Further,experiments are conducted by using the rhodamine 6 G(R6 G)solution at a concentration of 10-7 mol/L as probe molecules.The experimental results verify the feasibility of the Raman test of the CNTs/AgNPs-enhanced substrate in the microchannel;in addition,the variation of the Raman signal of the probe molecules in the microchannel has also been verified and analyzed at different positions and time.

关 键 词：光谱学 表面增强拉曼散射 微流控 碳纳米管 银纳米粒子 

分 类 号：O657.3[理学—分析化学]