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A Dynamic Grating Using a Photochemical Phase Transition of Polymer Liquid Crystals Containing Azobenzene Derivatives
Author(s) -
Hasegawa Makoto,
Yamamoto Takahiro,
Kanazawa Akihiko,
Shiono Takeshi,
Ikeda Tomiki
Publication year - 1999
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/(sici)1521-4095(199906)11:8<675::aid-adma675>3.0.co;2-z
Subject(s) - photoisomerization , azobenzene , materials science , liquid crystal , photochemistry , grating , polymer , moiety , phase transition , holography , erasure , side chain , phase (matter) , optics , optoelectronics , isomerization , chemical physics , organic chemistry , condensed matter physics , composite material , chemistry , physics , catalysis , computer science , programming language
The rapid formation (and erasure) of a dynamic phase grating is one condition required of materials for dynamic holography. The photochemical nematic–isotropic transition of the side‐chain polymer liquid crystal (PLC) shown in the Figure, caused by the trans – cis photoisomerization of the azobenzene moiety, is reported to cause a dynamic grating with fringe spacing of 1.4 μm to form in ∼150 ms.