Journal
APPLIED SURFACE SCIENCE
Volume 347, Issue -, Pages 856-860Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apsusc.2015.04.194
Keywords
Graphene oxide (GO); Au nanorod (AuNR); Surface-enhanced Raman scattering (SERS); Electronic transition efficiency
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Funding
- Fundamental Research Funds for the Central Universities [2011jdgz17, xjj2015082]
- National Natural Science Foundation of China [61178075, 81101122]
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The surface-enhanced Raman scattering (SERS) activity of the graphene oxide (GO) and Au nanorod(AuNR) hybrid (GO-AuNR) has been investigated by using the rhodamine 6G (R6G) as Raman active probe. Because of the existence of CTAB in the GO-AuNR substrate, the electronic transition efficiency has been greatly increased, which results in the significant improvement of SERS activity. A non-monotonous intensity change of SERS as a function of longitudinal surface plasmon resonance (SPR) wavelength has also been observed, which has been attributed to the aspect ratio-dependent competition between SPR and lightning rod effect. (C) 2015 Elsevier B.V. All rights reserved.
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