title: Laser induced fluorescence spectroscopy of various carbon nanostructures (GO, G and nanodiamond) in Rd6G solution.
abstract: The effect of carbon nanostructures such as graphene (G), graphene oxide (GO) and nanodiamond (ND) on the spectral properties of Rhodamine 6G (Rd6G) emission due to the laser induced fluorescence (LIF) was investigated. It is shown that the addition of carbon nano- structures lead to sensible Red/Blue shifts which depend on the optical properties and surface functionality of nanoparticles. The current theories such as resonance energy transfer (RET), fluorescence quenching and photon propagation in scattering media support the experimental findings. Stern-Volmer curves for dynamic and static quenching of Rd6G molecules embedded with G, GO and nanodiamond are correlated with spectral shifts. Furthermore, time evolution of the spectral shift contributes to determine loading/release rates of fluorescent species with large S-parameter on the given nano-carriers.
authors.affiliation: Physics Dept., Amirkabir University of Technology, P.O. Box 15875-4413, Tehran, Iran.
authors.forename: A
authors.initials: A
authors.lastname: Bavali
authors.affiliation: Physics Dept., Amirkabir University of Technology, P.O. Box 15875-4413, Tehran, Iran.
authors.forename: P
authors.initials: P
authors.lastname: Parvin
authors.affiliation: Physics Dept., Faculty of Science, Imam Khomeini International University, P.O. Box 34149-16818 Qazvin, Iran.
authors.forename: S Z
authors.initials: SZ
authors.lastname: Mortazavi
authors.affiliation: Mechanical Engineering Dept., Amirkabir University of Technology, P.O. Box 15875-4413, Tehran, Iran.
authors.forename: S S
authors.initials: SS
authors.lastname: Nourazar
keywords: (160.4236) Nanomaterials; (170.6280) Spectroscopy, fluorescence and luminescence; (170.7050) Turbid media; (260.2160) Energy transfer