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

Young Kwan Kim; Gyeongsik Ok; Sung Wook Choi; Hongje Jang; Dal Hee Min

doi:10.1039/c7nr00308k

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

Young Kwan Kim, Gyeongsik Ok, Sung Wook Choi, Hongje Jang, Dal Hee Min

Department of Chemistry

Research output: Contribution to journal › Article › peer-review

22 Scopus citations

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.

Original language	English
Pages (from-to)	5872-5878
Number of pages	7
Journal	Nanoscale
Volume	9
Issue number	18
DOIs	https://doi.org/10.1039/c7nr00308k
State	Published - 14 May 2017

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

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.",

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AU - Kim, Young Kwan

AU - Ok, Gyeongsik

AU - Choi, Sung Wook

AU - Jang, Hongje

AU - Min, Dal Hee

N1 - Publisher Copyright: © The Royal Society of Chemistry 2017.

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Y1 - 2017/5/14

N2 - 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.

AB - 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.

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

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