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Photoresponsive liquid crystalline and amorphous polymers
Author(s) -
Anderle K.,
Bach H.,
Fuhrmann TH.,
Wendorff J. H.
Publication year - 1996
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.19961010161
Subject(s) - azobenzene , isomerization , holography , materials science , photoisomerization , polymer , amorphous solid , polarization (electrochemistry) , photochemistry , chemical physics , optical storage , 3d optical data storage , optics , liquid crystal , optoelectronics , crystallography , composite material , chemistry , organic chemistry , physics , catalysis
Isomerization processes of azobenzene dyes dissolved in a glassy polymeric matrix or attached in glassy amorphous or liquid crystalline polymers to the backbone as side groups are induced by light. The isomerization process, in turn, causes the dye to reorient provided that polarized light is used: the long axis of the dye is oriented perpendicular to the polarization direction in the stationary case. Such a reorientation gives rise to strong modifications of the optical properties. This contribution is concerned with the analysis of the correlation between the nature of the azobenzene dyes, the isomerization, reorientation and modulations discussed above and with possible applications in the optical holographic storage. Considered are, in particular, dye/matrix combinations giving rise to nonlinear holographic responses, two photon holography, transient holographic modes applicable for holographic displays and the optical switching of other than optical properties.