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New Dichroic Azo Dyes for Guest‐Host Liquid Crystal Compositions
Author(s) -
Sato Hideki,
Ishio Hisayo,
Yoneyama Tomio,
Kaneko Masaharu
Publication year - 1998
Publication title -
sid symposium digest of technical papers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.351
H-Index - 44
eISSN - 2168-0159
pISSN - 0097-966X
DOI - 10.1889/1.1833868
Subject(s) - dichroic glass , liquid crystal , biphenyl , host (biology) , materials science , chemistry , crystallography , photochemistry , organic chemistry , nanotechnology , optoelectronics , ecology , biology
Several new dichroic azo dyes containing 2,2′‐bis(trifluoromethyl)biphenyl skeleton have been synthesized for liquid‐crystal displays taking advantage of guest‐host effects. The order parameters of these dyes have been determined in nematic liquid crystalline hosts. Tetrakisazo‐dyes‐exhibit high order parameters in liquid crystal. Especially, these dyes show S=0.85 in host LC with high order molecular alignment.