Picosecond and nanosecond studies of the excited state properties of C70

Tanigaki, Katsumi; Ebbesen, Thomas W.; Kuroshima, Sadanori

doi:10.1016/s0009-2614(91)85045-x

Cited by 93 publications

(52 citation statements)

References 28 publications

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“…The decay can be fitted monoexponentially, leading to a S~ lifetime of 627 + 20 ps. From earlier measurements by transient absorption spectroscopy S~ lifetimes of 115 ps [ 11 ] and 670 ps [ 14 ] in solution have been reported. Our measurements support the correctness of the latter.…”

Section: Resultsmentioning

confidence: 99%

“…The absorption spectrum of this material as measured with a Hewlett-Packard 8451A diode array spectrometer is shown in fig. 1 together with a bargraph and numerical data representing the absorption spectrum reported in the literature [8,14,18].…”

Section: Methodsmentioning

confidence: 99%

“…1. Absorption spectrum of the C7o sample used in the present study together with literature [ 8,14,18 ] data (bargraph and numerical values), solvent n-hexane.…”

Section: Methodsmentioning

confidence: 99%

“…Thus 115 ps was measured by Wasielewski et al [ 11 ], while Tanigaki et al reported 670 ps [14], both via transient absorption spectroscopy. As reported by our group before [ 12 ], and recently confirmed by others [ 13,17 ], C7o shows fluorescence in solution at room temperature.…”

Section: Introductionmentioning

confidence: 96%

“…Fascinating data are continuously reported now, regarding such topics as fulleride superconductivity [3 ], organo-metallic and organic fullerene derivatives [4][5][6][7] and photophysical properties of fullerenes [8][9][10][11][12][13][14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

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Fluorescence of fullerene-C70 and its quenching by long-range intermolecular electron transfer

Williams

Verhoeven

1992

Chemical Physics Letters

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The fluorescence spectrum and fluorescence quantum yield of C7o were determined in a number of solvents at room temperature. A well resolved fluorescence excitation spectrum, which matches the absorption spectrum, was obtained over a broad wavelength region (250 to 580 nm, in n-hexane). The fluorescence lifetime (627 ps in benzene) was determined, thereby settling the uncertainty about the singlet lifetime of C7o. It is shown that the quenching of the fluorescence by organic electron donors involves both dynamic and static mechanisms. The contribution of the latter is much more pronounced than can be explained from the degree of ground-state charge transfer complexation. Analysis in terms ofa Perrin model indicates that long-range intermolecular electron transfer is important, with a radius of action that increases sharply when the donor oxidation potential is lowered.

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Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

“…1. Absorption spectrum of the C7o sample used in the present study together with literature [ 8,14,18 ] data (bargraph and numerical values), solvent n-hexane.…”

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

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Fluorescence of fullerene-C70 and its quenching by long-range intermolecular electron transfer

Williams

Verhoeven

1992

Chemical Physics Letters

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Spectrophotometric Analysis of C60 and C70 Fullerences in the Toluene Solutions

Аникина¹,

Zaginaichenko²,

Maistrenko³

et al. 2004

Hydrogen Materials Science and Chemistry of Carbon Nanomaterials

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The method for determination of the molar absorption coefficient (MAC) of C 60 and C 70 fullerenes has been developed. The values of MAC obtained by the graphic method are refined there after by the mathematical method of successive approximation.The levels of analytical wavelengths, the ranges for concentrations of fullerene mixtures, solutions optimum for the qualitative analysis have been established.The spectra of C 60 solutions and solutions of its mixtures with C 70 containing C 60 0.5 10 -4 mol/l show the bathochromic shift of the absorption band with the maximum at =335 nm.

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