Is chemically synthesized Graphene `really' a unique substrate for SERS and fluorescence quenching?

Sil, Sanchita and Kuhar, Nikki and Acharya, Somnath and Umapathy, Siva (2013) Is chemically synthesized Graphene `really' a unique substrate for SERS and fluorescence quenching? In: Scientific Reports, 3 . 3336_1-3336_6.

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Abstract

We demonstrate observation of Raman signals of different analytes adsorbed on carbonaceous materials, such as, chemically reduced graphene, graphene oxide (GO), multi-walled carbon nanotube (MWCNT), graphite and activated carbon. The analytes selected for the study were Rhodamine 6G (R6G) (in resonant conditions), Rhodamine B (RB), Nile blue (NBA), Crystal Violet (CV) and acetaminophen (paracetamol). All the analytes except paracetamol absorb and fluoresce in the visible region. In this article we provide experimental evidence of the fact that observation of Raman signals of analytes on such carbonaceous materials are more due to resonance effect, suppression of fluorescence and efficient adsorption and that this property in not unique to graphene or nanotubes but prevalent for various type of carbon materials.

Item Type:	Journal Article
Publication:	Scientific Reports
Publisher:	Nature Publishing Group
Additional Information:	Copyright of this article belongs to Nature Publishing Group.
Department/Centre:	Division of Chemical Sciences > Inorganic & Physical Chemistry
Date Deposited:	30 Dec 2013 12:25
Last Modified:	30 Dec 2013 12:25
URI:	http://eprints.iisc.ac.in/id/eprint/48058

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