Issue 15, 2016
From the journal:

RSC Advances

Characterization of graphene edge functionalization by grating enhanced Raman spectroscopy

Yu-Ju Hung,*a   Mario Hofmann,b   Yang-Chin Cheng,a   Chia-Wei Huang,a   Kai-Wen Changb  and  Jih-Yin Leea  

* Corresponding authors

a Department of Photonics, National Sun Yat-sen University, Kaohsiung, Taiwan
E-mail: yjhung@mail.nsysu.edu.tw

b Department of Material Science and Engineering, National Cheng Kung University, Tainan, Taiwan

Abstract

The edges of graphene, a two-dimensional carbon allotrope, are an emerging research area with wide applications in catalysis and electronics. To improve the metrology of functionalized graphene edges we propose localized surface plasmon polariton (LSPP)-enhanced Raman spectroscopy on a metallic grating substrate. We demonstrate a large enhancement of edge related Raman features at 1450 cm−1 and 1530 cm−1 which are associated with armchair and zigzag hydrogen-terminated graphene edges, respectively. The graphene edges act as good scatterers to excite LSPP on a noble metal surface while the periodic structures boost the total Raman peaks of the graphene layer. Specifically, the scattering enhancement on the graphene edges make the edge modes strong. Our results highlight the potential of LSPP-enhanced Raman spectroscopy as an efficient characterization tool for graphene edge functionalization.

Graphical abstract: Characterization of graphene edge functionalization by grating enhanced Raman spectroscopy

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Article information

DOI
https://doi.org/10.1039/C5RA21717B
Article type
Paper
Submitted
18 Oct 2015
Accepted
11 Jan 2016
First published
14 Jan 2016

RSC Adv., 2016,6, 12398-12401

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Characterization of graphene edge functionalization by grating enhanced Raman spectroscopy

Y. Hung, M. Hofmann, Y. Cheng, C. Huang, K. Chang and J. Lee, RSC Adv., 2016, 6, 12398 DOI: 10.1039/C5RA21717B

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