Photooxygenation of singlet oxygen traps upon excitation of molecular oxygen by dark red laser radiation in air-saturated solutions

A. A. Krasnovsky; I. V. Kryukov; A. V. Sharkov

doi:10.1117/12.741005

1 May 2007 Photooxygenation of singlet oxygen traps upon excitation of molecular oxygen by dark red laser radiation in air-saturated solutions

A. A. Krasnovsky, I. V. Kryukov, A. V. Sharkov

Author Affiliations +

Proceedings Volume 6535, Saratov Fall Meeting 2006: Optical Technologies in Biophysics and Medicine VIII; 65351Q (2007) https://doi.org/10.1117/12.741005
Event: Saratov Fall Meeting 2006, 2006, Saratov, Russian Federation

Abstract

The photooxygenation of tetracene and 1,3-diphenylisobenzofuran was shown to occur in air-saturated carbon tetrachloride upon laser irradiation at 765 nm. The action spectrum of the photoreaction is represented by the narrow band with the halfwidth less than or equal to 20 nm and the maximum at 765 nm. The data indicate that photoreaction is due to direct laser excitation of the ¹Σ_g ⁺(ν=0) <- ³Σ_g ^- (ν=0) transition in oxygen molecules. The molar absorption coefficient corresponding to the spectral maximum of this transition was estimated from the observed photoreaction rates.

Citation Download Citation

A. A. Krasnovsky, I. V. Kryukov, and A. V. Sharkov "Photooxygenation of singlet oxygen traps upon excitation of molecular oxygen by dark red laser radiation in air-saturated solutions", Proc. SPIE 6535, Saratov Fall Meeting 2006: Optical Technologies in Biophysics and Medicine VIII, 65351Q (1 May 2007); https://doi.org/10.1117/12.741005

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