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

Title
The interfacing structural effect of Ag/graphene oxide nanohybrid films on surface enhanced Raman scattering
Authors
김영관옥경식최성욱장홍제민달희
Issue Date
2017-05
Publisher
Nanoscale
Citation
VOL 9, NO 18-5878
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 sp2 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 ∼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 sp2 carbon domains of GO derivatives through wet-chemical processes.
URI
https://pubs.kist.re.kr/handle/201004/65686
ISSN
2040-3364
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KIST Publication > Article
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