Graphene as a substrate to suppress fluorescence in resonance Raman spectroscopy.
We have measured resonance Raman spectra with greatly suppressed fluorescence (FL) background from rhodamine 6G (R6G) and protoporphyrin IX (PPP) adsorbed on graphene. The FL suppression is estimated to be approximately 10(3) times for R6G. The successful observation of resonance Raman peaks demonstrates that graphene can be used as a substrate to suppress FL in resonance Raman spectroscopy (RRS), which has potential applications in low-concentration detection and RRS study of fluorescent molecules.
Xie
Liming
L
Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, PR China.
Ling
Xi
X
Fang
Yuan
Y
Zhang
Jin
J
Liu
Zhongfan
Z
D005453:Fluorescence; D005456:Fluorescent Dyes / Q000737:chemistry; D006108:Graphite / Q000737:chemistry*; D008422:Materials Testing; D010316:Particle Size; D011524:Protoporphyrins / Q000737:chemistry; D012235:Rhodamines / Q000737:chemistry; D013059:Spectrum Analysis, Raman / Q000379:methods; D013499:Surface Properties
D005456:Fluorescent Dyes; D011524:Protoporphyrins; D012235:Rhodamines; C026188:rhodamine 6G; D006108:Graphite; C028025:protoporphyrin IX