Model of optically induced memory in amorphous azopolymers

Journal Article · Sun Feb 28 00:00:00 EST 2010 · Quantum Electronics (Woodbury, N.Y.)

DOI:https://doi.org/10.1070/QE2010V040N02ABEH014166· OSTI ID:21471054

Ponomarev, Yu V; Ivanov, S A ^[1]

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1. M. V. Lomonosov Moscow State University, Faculty of Physics, Moscow (Russian Federation)

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.

• OSTI ID: 21471054
• Journal Information: Quantum Electronics (Woodbury, N.Y.), Vol. 40, Issue 2; Other Information: DOI: 10.1070/QE2010v040n02ABEH014166; ISSN 1063-7818
• Country of Publication: United States
• Language: English

Related Subjects

71 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