AgNPs@PDMS纳米碗阵列SERS基底的制备及其性能研究  

Preparation and performance study of AgNPs@PDMS nanobowl array SERS substrate

作　　者：夏津 王金阳 韩龙浩 黄艳宾 冯越 张慧亮 XIA Jin;WANG Jinyang;HAN Longhao;HUANG Yanbin;FENG Yue;ZHANG Huiliang(School of Mathematical and Physical Science and Engineering,Hebei University of Engineering,Handan Hebei 056038,China;Hebei Computational Optical Imaging and Photoelectric Detection Technology Innovation Center,Handan Hebei 056038,China;Hebei International Joint Research Center for Computational Optical Imaging and Intelligent Sensing,Handan Hebei 056038,China)

机构地区：[1]河北工程大学数理科学与工程学院,河北邯郸056038 [2]河北省计算光学成像与光电检测技术创新中心,河北邯郸056038 [3]河北省计算光学成像与智能感测国际联合研究中心,河北邯郸056038

出　　处：《激光杂志》2024年第6期49-56,共8页Laser Journal

基　　金：河北省自然科学基金(No.E2021402097)。

摘　　要：构建了一种具有纳米碗阵列结构的柔性表面增强拉曼散射(SERS)基底,并对罗丹明6G和福美双进行了检测分析。首先利用气-液自组装法在玻璃片上制备单层聚苯乙烯(PS)微球薄膜,然后将液-液界面自组装法得到的单层银纳米颗粒转移至PS微球薄膜上,再把聚二甲基硅氧烷(PDMS)涂敷于银纳米颗粒上,经烘干和剥离得到AgNPs@PDMS纳米碗阵列基底。使用便携式拉曼光谱仪对该基底进行测试,以罗丹明6G作为探针分子,测试得到的检测限为1×10^(-8)mol/L,增强因子为4.32×10^(5),测试结果也显示该基底具有较高的均匀性和可重复使用性。以福美双为探针分子,测试得到的检测限为1×10^(-6)mol/L,并对福美双的拉曼峰强与其浓度关系进行了研究,结果显示该基底能够实现对福美双的定量检测。A flexible surface-enhanced Raman scattering(SERS)substrate with a nano-bowl array structure was constructed and used for the analysis and detection of Rhodamine 6G and thiram.First,a single-layer polystyrene(PS)microsphere film was prepared on a glass slide using the gas-liquid self-assembly method.Then,the singlelayer silver nanoparticles obtained by the liquid-liquid interface self-assembly method were transferred to the PS microsphere film.Subsequently,polydimethylsiloxane(PDMS)was coated on the silver nanoparticles.After drying and peeling,an AgNPs@PDMS nanobowl array substrate was obtained.Using a portable Raman spectrometer to test this substrate with Rhodamine 6G as the probe molecule,the detection limit was found to be 1×10^(-8) mol/L,with an enhancement factor of 4.32×10^(5).The test results also showed that the substrate has high uniformity and reusability.Using thiram as the probe molecule,the detection limit was as low as 1×10^(-6) mol/L.The relationship between the Raman peak intensity of thiram and its concentration was studied,and the results showed that the substrate can achieve quantitative detection of thiram.

关 键 词：光谱学 表面增强拉曼散射 柔性基底 有序阵列 

分 类 号：O657.37[理学—分析化学]