Wavelength Dependence of the Nonlinear Absorption of C60− and C70−Toluene Solutions

Wavelength Dependence of the Nonlinear Absorption of C60− and C70−Toluene Solutions

The nonlinear transmission properties of C60 and C70 in toluene solution in the ultraviolet and visible spectral regions have been studied using nanosecond laser pulses. Whereas at 308 and 534 nm both fullerenes behave as reverse saturable absorbers, at 337 nm their behavior changes to that of a sat...

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Veröffentlicht in:The journal of physical chemistry. A, Molecules, spectroscopy, kinetics, environment, & general theory Molecules, spectroscopy, kinetics, environment, & general theory, 1998-04, Vol.102 (15), p.2527-2532
Hauptverfasser: Barroso, J, Costela, A, García-Moreno, I, Saiz, J. L
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container_issue 15
container_start_page 2527
container_title The journal of physical chemistry. A, Molecules, spectroscopy, kinetics, environment, & general theory
container_volume 102
creator Barroso, J
Costela, A
García-Moreno, I
Saiz, J. L
description The nonlinear transmission properties of C60 and C70 in toluene solution in the ultraviolet and visible spectral regions have been studied using nanosecond laser pulses. Whereas at 308 and 534 nm both fullerenes behave as reverse saturable absorbers, at 337 nm their behavior changes to that of a saturable absorber. A five-level rate equation model was developed that reproduces adequately the dependence of transmittance with intensity at the different irradiation wavelengths and allows us to estimate the absorption cross sections of the first excited singlet state for each fullerene.
doi_str_mv 10.1021/jp980367e
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title Wavelength Dependence of the Nonlinear Absorption of C60− and C70−Toluene Solutions
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