Fabrication and Surface-Enhanced Raman Scattering Research on Polystyrene Nanospheres Arrays
LI Bin1,2, NIU Gao2*, YI Yong1, ZHOU Xiu-wen2, LIU Xu-dong2, YE Xin2, WANG Chao-yang3*
1. School of Materials Science and Engineering, Southwest University of Science and Technology, Mianyang 621010, China 2. Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang 621000, China 3. Science and Technology on Plasma Physics Laboratory, Mianyang 621000, China
Abstract：To research surface-enhanced Raman scattering effect of different diameters’ polystyrene nanospheres (Ag-coated) substrates, we had prepared a new surface-enhanced Raman scattering substrate. It was prepared by using spin-coating and self-assembled to form monolayer and hexagonal close-packed (HCP) order colloidal-crystal films with PS nanospheres of different diameters. Then, a 30 nm Ag film was deposited on the PS arrays with magnetron sputtering. We detected Raman scattered spectrum by means of Roman spectroscopy instrument with Rhodamine R6G as a probe molecule, and the conclusion was drawn that all the substrates of Ag-coated PS nanospheres displayed stronger Raman enhancement. With the increase of the diameter of the microspheres, the degree of fluctuation of polystyrene nanospheres array was continuously strengthened (increasing roughness), and the SERS signal was enhanced gradually. The signal peak reached a maximum when the ball diameter was 600 nm, and then we aquired an optimal SERS substrate. Simultaneously, we found that the SERS spectra of R6G of a high signal to noise ratio was obtained on the substrate, and associated with the benzene ring within a range of CC double bond stretching vibration characteristic spectrum and the inner surface and the outer surface deformation vibration characteristic spectra were significantly enhanced. The single and large-scale Raman scattering substrate presents especial nanostructure of high and low distribution. The depth and the gap between different PS microspheres show the obvious differences, which can significantly improve the surface morphology structure of Ag film and Raman scattering effect of PS nanospheres substrate. The substrate presenting special arrays’ structure has significantly great potential in exploring molecule of chemical and biological filed.
李 彬1，2，牛 高2*，易 勇1，周秀文2，刘旭东2，叶 鑫2，王朝阳3* . PS微球阵列的制备与表面增强拉曼散射研究 [J]. 光谱学与光谱分析, 2016, 36(09): 2812-2817.
LI Bin1,2, NIU Gao2*, YI Yong1, ZHOU Xiu-wen2, LIU Xu-dong2, YE Xin2, WANG Chao-yang3* . Fabrication and Surface-Enhanced Raman Scattering Research on Polystyrene Nanospheres Arrays. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2016, 36(09): 2812-2817.
[1] Fleischmann M, Hendra P J, McQuillan A J. Chemical Physics Letters, 1974, 26(2): 163. [2] Bhatt K, Tan S, Karumuri S, et al. Nano Letters, 2010, 10(10): 3880. [3] Driskell J D, Kwarta K M, Lipert R J, et al. Analytical Chemistry, 2005, 77(19): 6147. [4] Tao A, Kim F, Hess C, et al. Nano Letters, 2003, 3(9): 1229. [5] ZHANG Xiao-lei, ZHANG Jie, REN Wen-jie, et al(张晓蕾, 张 洁, 任文杰, 等). Spectroscopy and Spectral Analysis(光谱学与光谱分析), 2015, 35(6): 1567. [6] Ye X, Qi L. Nano Today, 2011, 6(6): 608. [7] Zhu J, Li M, Rogers R, et al. Nature, 1997, 387(6636): 883. [8] Li L, Zhai T, Zeng H, et al. Journal of Materials Chemistry, 2011, 21(1): 40. [9] Zhang J, Li Y, Zhang X, et al. Advanced Materials, 2010, 22(38): 4249. [10] Velev O D, Kaler E W. Advanced Materials, 2000, 12(7): 531. [11] Hu X, Xu Z, Li K, et al. Applied Surface Science, 2015, 355: 1168. [12] Jiang P, Prasad T, McFarland M J, et al. Applied Physics Letters, 2006, 89(1): 011908. [13] Lubambo A F, Lucyszyn N, Petzhold C L, et al. Carbohydrate Polymers, 2011, 84(1): 126. [14] Chen J, Dong P, Di D, et al. Applied Surface Science, 2013, 270: 6.
