Polyphenyl-based ester compounds and liquid crystal compositions containing same.

摘要

Polyphenyl-based liquid crystal compounds represented by the following general formula (1) and liquid crystal composition containing the same:
<Chemistry id="chema01" num="0001"><Image id="ia01" he="36" wi="129" file="IMGA0001.TIF" imgContent="chem" imgFormat="TIFF" inline="no" /></Chemistry><!-- EPO <DP n="2"> -->wherein R' represents a straight or branched C<Sub>1-18</Sub> alkyl group, haloalkyl group, aralkyl group or haloaralkyl group with or without optically active carbon, R<Sup>2</Sup> represents a straight or branched C<Sub>1-6</Sub> alkyl group, haloalkyl group or aralkyl group with or without optically active carbon, W represents single bond, -O-, -OCOO-, -OCO- or -COO-, T represents a halogen atom or a methyl group, but when W is selected from the group consisting of single bond, -O- or -OCOO- T is only a halogen atom, X represents -OCO-, - COO-, -C=C-, -CH=N-, -N=CH, Y represents single bond, -0-, -COO-, -OCO-, -CH<Sub>2</Sub>-, -OCH<Sub>2</Sub>-, -COOCH,- or - OCOCH<Sub>2</Sub>-, Z, and Z<Sub>2</Sub> represent a hydrogen or halogen atom, a cyano group or nitro group, Z, may be the same or different from Z<Sub>2</Sub>, n and m are one or more than one each and a total of n and m is three or more than three, the carbon atom marked with * is an asymmetric carbon atom.