Surface-enhanced Raman Scattering Effect of Ordered Gold Nanoparticle Array for Rhodamine B with Different Morphologies  

作　　者：Xi-hong Zu Zhi-hui Jian 易国斌 Hai-liang Huang Ben-bin Zhong Hong-sheng Luo Jia-rong Huang Cui Wang 

机构地区：[1]School of Chemical Engineering and Light Industry, Guangdong University of Technology

出　　处：《Chinese Journal of Polymer Science》2015年第10期1470-1476,共7页高分子科学（英文版）

基　　金：financially supported by the National Natural Science Foundation of China(Nos.51203025,51273048 and 51203191)

摘　　要：In this study, well-ordered gold nanoparticle array on silicon substrate was adopted as an active surface-enhanced Raman scattering substrate for detecting rhodamine B （RB）, and the influence of RB morphologies on surface-enhanced Raman scattering （SERS） properties was discussed. The Au nanoparticle array was prepared by using patterned P4VP nanodomains of poly（styrene-b-4-vinylpyridine） （PS-b-P4VP） diblock copolymer thin films as nanoreactors which is a simple and economical approach. The results show that Raman spectra of RB on the Au nanopaticle array have much stronger intensity than those on the bare silicon substrate by detecting same RB solution. It indicates that the prepared Au nanoparticle array on silicon substrate has a significant Raman enhancement for RB. Interestingly, the Raman intensity of RB from its ethanol solution is much stronger than that from its aqueous solution due to the special morphologies of RB formed in their ethanol solutions. This work provides an effective approach to prepare highly sensitive and stable surface-enhanced Raman scattering substrate.In this study, well-ordered gold nanoparticle array on silicon substrate was adopted as an active surface-enhanced Raman scattering substrate for detecting rhodamine B （RB）, and the influence of RB morphologies on surface-enhanced Raman scattering （SERS） properties was discussed. The Au nanoparticle array was prepared by using patterned P4VP nanodomains of poly（styrene-b-4-vinylpyridine） （PS-b-P4VP） diblock copolymer thin films as nanoreactors which is a simple and economical approach. The results show that Raman spectra of RB on the Au nanopaticle array have much stronger intensity than those on the bare silicon substrate by detecting same RB solution. It indicates that the prepared Au nanoparticle array on silicon substrate has a significant Raman enhancement for RB. Interestingly, the Raman intensity of RB from its ethanol solution is much stronger than that from its aqueous solution due to the special morphologies of RB formed in their ethanol solutions. This work provides an effective approach to prepare highly sensitive and stable surface-enhanced Raman scattering substrate.

关 键 词：Nanoparticle array Rhodamine B Raman spectroscopy NANOWIRE Nanograss 

分 类 号：TQ131.23[化学工程—无机化工] TB383.1[一般工业技术—材料科学与工程]