Glassy cholesteric liquid crystalline metal acetylides

摘要

A cholesteric liquid crystal. The liquid crystal includes a metal acetylide, of which the metal is a square, planar transition metal. The metal acetylide includes first and second acylphosphine ligands and first and second phenyl acetylene ligands. Each of the first and second phenyl acetylene ligands have a meta- or para-substituent, which are selected from the group consisting of H, F, CN, OCH3, C≡C—C6H5,(COO—C34H50O2), and COO—C5H10—C))—C34H50O2.

主权项

1. A cholesteric liquid crystal comprising:
a metal acetylide having first and second acyl-phosphine ligands, wherein the metal is a square, planar transition metal; a first phenyl acetylene ligand having a first meta-or para-substituent; and a second phenyl acetylene ligand having a second meta-or para-ubstituent, wherein the first meta-or para-substituent of the first phenyl acetylene ligand is selected from the group consisting of cholesterol ester (COO-C27H45), cholesterol benzoate (C6H5-COO-C27H45) and 6-cholesteroloxy-6-oxohexyl-carboxyl (COO-C5H10-COO-C27H45).