Is Chemically Synthesized Graphene 'Really' a Unique Substrate for SERS and Fluorescence Quenching?

被引：52

作者：

Sil, Sanchita ^{[1
,2
]}

Kuhar, Nikki ^{[1
]}

Acharya, Somnath ^{[1
]}

Umapathy, Siva ^{[1
]}

机构：

[1] Indian Inst Sci, Dept Inorgan & Phys Chem, Bangalore 560012, Karnataka, India

[2] High Energy Mat Res Lab, Pune, Maharashtra, India

来源：

SCIENTIFIC REPORTS | 2013年 / 3卷

关键词：

RAMAN-SPECTROSCOPY; ADSORPTION; REDUCTION; PORPHYRIN; MOLECULES; ENERGY;

D O I：

10.1038/srep03336

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

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.

引用

页数：6

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