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Author Ponomarev, Yu V. ♦ Ivanov, S. A.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS ♦ ABSORPTION ♦ AMORPHOUS STATE ♦ CROSS SECTIONS ♦ DECAY ♦ DICHROISM ♦ DIFFUSION ♦ INTERACTIONS ♦ ISOMERIZATION ♦ ISOMERS ♦ OPTICAL PROPERTIES ♦ POLYMERS ♦ RADIATION EFFECTS ♦ RELAXATION ♦ VISIBLE RADIATION ♦ YIELDS ♦ CHEMICAL REACTIONS ♦ ELECTROMAGNETIC RADIATION ♦ PHYSICAL PROPERTIES ♦ RADIATIONS ♦ SORPTION
Abstract A phenomenological model of the light - azopolymer radiation interaction is proposed in which chromophores interact with the polymer matrix due to the mutual orientational diffusion. It is established that for some amorphous azopolymers, the model satisfactorily describes the photoinduced dichroism dynamics both at the stage of light action and relaxation, and allows the estimate of the main optical parameters of chromophores (absorption cross section and quantum yields of trans and cis isomerisations, times of the spontaneous decay of cis isomers) to be obtained by the experimentally measured dichroism. The comparison of the results of model calculations with the experimental ones shows that only a part of trans isomers participating in trans - cis isomerisation contributes to the dichroism.
ISSN 10637818
Educational Use Research
Learning Resource Type Article
Publisher Date 2010-02-28
Publisher Place United States
Journal Quantum Electronics
Volume Number 40
Issue Number 2


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