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The interfacing structural effect of Ag/graphene oxide nanohybrid films on surface enhanced Raman scattering

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Title
The interfacing structural effect of Ag/graphene oxide nanohybrid films on surface enhanced Raman scattering
Author(s)
Young-Kwan Kim; Gyeongsik Ok; Sung-Wook Choi; Hongje Jang; Dal-Hee Min
Publication Date
2017-05
Journal
NANOSCALE, v.9, no.18, pp.5872 - 5878
Publisher
ROYAL SOC CHEMISTRY
Abstract
The interfacing structural effect of Ag/graphene oxide (GO) nanohybrid films on SERS was investigated by using Ag nanostructures immobilized on polyallylamine hydrochloride (PAA) functionalized-GO and reduced GO (RGO) films. We found that the electron transfer from Ag nanostructures to GO derivatives dominantly occurred at the interfaces between Ag nanostructures and the sp(2) carbon domains of GO and RGO films. By utilizing 4-aminothiophenol (4-ATP) as a Raman probe, it was revealed that this electron transfer process augmented the enhancement factor (EF) of 4-ATP up to similar to 1.8 fold on Ag/PAA-RGO nanohybrid films compared to Ag/PAA-GO nanohybrid films with the increasing interfacing area between Ag nanostructures and the sp(2) carbon domains of GO derivatives through wet-chemical processes. © The Royal Society of Chemistry 2017
URI
https://pr.ibs.re.kr/handle/8788114/3688
ISSN
2040-3364
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Center for RNA Research(RNA 연구단) > Journal Papers (저널논문)
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