Surfacehyphen;produced parallel alignment of nematic liquid crystals by polynuclear dicarboxylatochromium complexes

摘要

Dicarboxylatochromium complexes have produced very stable parallel molecular alignment of nematic liquid crystals, in contrast with a recently described perpendicular orientation by monocarboxylatochromium complexes. The complexes used are mgr;hyphen;dicarboxylatohyphen;bis (tetranitrohyphen;mgr;hyphen;hydroxodichromium (III))rsquo;s which bond chemically to substrate surfaces.