Title:
【発明の名称】異方性有機化合物
Document Type and Number:
Japanese Patent JPH05507725
Kind Code:
A
Abstract:
The invention describes liquid crystalline compounds of formula (I), where A, D and G are independently selected from phenyl, thiophene, hydrogenated phenyl, chlorinated phenyl and fluorinated phenyl, B and E are independently selected from a single bond C=C, C=C, C00, azoxy and diazo, k and m are independently selected from 1 and 0, such that m+n is 1 or 2, and R1 and R2 are independently selected from R, R0, alkynyl, thioalkyl, hydrogen, CN, NCS and SCN; provided that at least one of R1 and R2 is selected from CN, NCS and SCN and that at least one of A, D and G is phenyl; and excluding where at least one of R1 and R2 is independently selected as CN and one of A, D or G is not thiophene, and where m is 0, A, and D are phenyl, B is a single bond and only one of R1 or R2 is NCS. Also described are compounds suitable for inclusion in a device utilising pretransitional characteristics of liquid crystalline materials in the isotropic phase, of general formula (II) where J and Y are independently selected from phenyl, thiophene, hydrogenated phenyl, chlorinated phenyl and fluorinated phenyl, X is selected from C=C, C=C, COO, azoxy and diazo, k is 1 or 0 and R3 and R4 are independently selected from R, RO, alkynyl, thioalkyl, hydrogen, CN, NCS and SCN; provided that at least one of R3 and R4 is selected from CN, NCS and SCN and that at least one of J and Y is phenyl.
Inventors:
Toin, Kenneth Jiyoungson
Guts Dubai, Jiyoung William
Seed, alexander
Gray, George William
McDonnell, Damien Theerald
Lanes, edward peter
Day, Sally Elizabeth
Harrison, Kenneth Jiyoung
Hard, michael
Guts Dubai, Jiyoung William
Seed, alexander
Gray, George William
McDonnell, Damien Theerald
Lanes, edward peter
Day, Sally Elizabeth
Harrison, Kenneth Jiyoung
Hard, michael
Application Number:
JP50557792A
Publication Date:
November 04, 1993
Filing Date:
March 09, 1992
Export Citation:
Assignee:
United Kingdom
International Classes:
C07C255/50; C07C255/55; C07C291/08; C07C323/62; C07C331/08; C07C331/28; C07D333/14; C07D333/20; C07D333/24; C07D333/36; C09K19/12; C09K19/18; C09K19/20; C07D333/16; C09K19/30; C09K19/34; G02F1/13; (IPC1-7): C07C255/50; C07C255/55; C07C291/08; C07C331/08; C07C331/28; C07D333/16; C07D333/24; C09K19/12; C09K19/18; C09K19/20; C09K19/30; C09K19/34; G02F1/13
Attorney, Agent or Firm:
Yoshio Kawaguchi (3 outside)