Laser-induced reduction of a dye characterised by a high triplet-state yield and dissolved in a polymer

Journal Article · Mon Jan 31 00:00:00 EST 2000 · Quantum Electronics (Woodbury, N.Y.)

DOI:https://doi.org/10.1070/QE2000V030N01ABEH001654· OSTI ID:21442673

Sizykh, A G; Tarakanova, E A; Tatarinova, L L ^[1]

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1. Quantum Electronics Division, Krasnoyarsk State University, Krasnoyarsk (Russian Federation)

An investigation was made of the photoreduction kinetics of a dye in a solid polymer solution under the influence of laser radiation corresponding to the band of the first singlet - singlet transition. Participation of higher triplet states was considered in a model of the photoreduction of a dye characterised by a high intersystem crossing yield. An analytic solution was obtained for a system of kinetic equations. This solution takes into account the difference between the photoprocess rates. It is shown that a linear dependence of the effective dye-photoreduction rate on the laser radiation intensity can serve as a test of the participation of higher triplet states in the reaction. A comparison of the theoretical and experimental results obtained in the present study is used to determine the ratio of the photoreduction and deactivation rate constants of the higher triplet state of eosin K. (interaction of laser radiation with matter. laser plasma)

• OSTI ID: 21442673
• Journal Information: Quantum Electronics (Woodbury, N.Y.), Vol. 30, Issue 1; Other Information: DOI: 10.1070/QE2000v030n01ABEH001654; ISSN 1063-7818
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ANALYTICAL SOLUTION
DEACTIVATION
EOSIN
KINETIC EQUATIONS
LASER RADIATION
LASER-PRODUCED PLASMA
POLYMERS
REACTION KINETICS
SOLID SOLUTIONS
TRIPLETS
CARBOXYLIC ACIDS
DISPERSIONS
DYES
ELECTROMAGNETIC RADIATION
EQUATIONS
HOMOGENEOUS MIXTURES
HYDROXY ACIDS
INDICATORS
KINETICS
MATHEMATICAL SOLUTIONS
MIXTURES
MULTIPLETS
ORGANIC ACIDS
ORGANIC BROMINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
PLASMA
RADIATIONS
SOLUTIONS