65195-03-1Relevant academic research and scientific papers
Ortho Cyano Substituted Negative Dielectric Anisotropic Liquid Crystals
Hong, X. J.,Ge, M. J.,Zhao, X. M.,Fen, Z. R.,Liu, Z. J.
, p. 81 - 88 (2007/10/02)
A homologous series of 2'-cyano-4'-n-alkylbiphenylcarboxylates and 4-n-alkylcyclohexyl-p-benzoates were synthesized by treating 2'-cyano-4'-n-alkyl substituted phenols with 4-n-alkyl substituted biphenyl carboxylic acids and cyclohexyl benzoic acids.The method of synthesis was discussed.All these compounds were nematogenic in character and their phase transition temperatures were examined.A wide range of mesomorphism was observed in almost all the homologous series.IR, NMR, and dielectric property of these compounds were studied studied.The negative dielectric anisotropic property of these liquid crystalline compounds makes them suitable for application in positive GH display devices.
Cyano-substituted biphenyl compounds and liquid crystalline dielectrics containing the same
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, (2008/06/13)
Biphenyl derivatives of the formula: STR1 wherein X is --CO--O-- or --O--CO--, R1 and R4 are alkyl of 1 to 10 carbon atoms, and one of R2 and R3 is CN and the other is H, are useful for lowering the dielectric anisotropy of liquid crystalline dielectrics.
