84452-60-8Relevant academic research and scientific papers
Synthesis and Transition Temperatures of Some Branched Alkyloxycarbonylphenyl Esters of 3-(4'-n-Alkyl- and alkoxy-biphenyl-4-yl)propanoic Acids and their Laterally Fluorinated Analogues
Hall, A. W.,Lacey, D.,Holmes, D.
, p. 333 - 346 (2007/10/02)
A number of three ring diesters based on 4'-n-alkoxy- and 4'-n-alkyl-biphenyl-4-ylpropanoic acid have been prepared to investigate the effect on the liquid crystalline behaviour of these compounds of (a) incorporation of branched (achiral) end groups, and (b) laterally positioned fluorine atoms.Many of these diesters exhibited wide temperture range SC and SI phases, especially for compounds containing the 2-methylpentyl end group.Lateral fluorination in both the 2- and 3-positions of the phenolic moiety reduced the melting point and smectic thermal stabilities of the diesters.The reduction in SC thermal stability by incorporation of a laterally positioned fluorine atom in the 2-position was very small, giving rise to compounds with very wide SC ranges (40-50 deg C).Unexpectedly, compounds containing a laterally positioned fluorine atom in the 3-position gave a number of crystal phases.Whether the diesters incorporated a branched terminal group or a laterally positioned fluorine atom, no nematic phase was observed. - Keywords: Fluorinated liquid crystals smectic C phase esters of 4'-n-alkoxybiphenyl-4-ylpropanoic acids esters of 4'-n-alkylbiphenyl-4-ylpropanoic acids
Monomers and their use for the production of a laser-optical recording element which can be repeatedly erased and recorded on
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, (2008/06/13)
Novel laser-optical recording elements which can be repeatedly erased and recorded on contain recording layers (a) which exhibit enantiotropic, ferroelectric smectic liquid crystalline (SC*) behavior, so that they can be switched back and forth
Liquid-crystalline copolymer
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, (2008/06/13)
A liquid-crystalline copolymer having a long helical pitch, the liquid-crystalline copolymer comprises the copolymerization product of; (a) at least one liquid-crystalline epoxy compound having a helical structure and (b) at least one liquid-crystalline epoxy compound having a helical structure opposite in twining direction of helix to the helical structure of the liquid--crystalline epoxy compound (a) or (c) at least one non-liquid-crystalline epoxy compound.
Optical Properties of New Ferroelectric Liquid Crystal Materials: (+)-4-(2-Methylbutyloxycarbonyl) 4-(5-alkyl-1,3-dioxan-2-yl)benzoate
Haramoto, Y.,Kamogawa, H.
, p. 89 - 94 (2007/10/02)
New ferroelectric Liquid Crystal Compounds: (+)-4-(2-Methylbutyloxycarbonyl) 4-(5-alkyl-1,3-dioxan-2-yl)benzoate were synthesized.Some physical properties of these materials were measuered and compared with those of (s)-2-methylbutyl p-(p-decyloxybenzylideneamino)cinnamate (DOBAMBC).The principal features of these new ferroelectric liquid crystal compounds are: (1) wider temperature range of the ferroelectric liquid crystalline phase; (2) longer helical pitches; and (3) lower rotational viscosity coefficient.Keywords: Ferroelectric liquid crystal, 1,3-dioxane, optical property
Liquid crystalline carbonic acid esters and liquid crystal compositions containing the same
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, (2008/06/13)
A novel chiral liquid crystalline compound having an optically active group and a liquid crystal composition containing the same are provided, which compound is expressed by the general formula STR1 wherein R is a linear chain or branched alkyl group of 1
Ferroelectric liquid crystal compounds and liquid crystal compositions
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, (2008/06/13)
The present invention is characterized by a smectic liquid crystal compound represented by the following formula: STR1 wherein R is selected from alkyl and alkoxy groups; X from STR2 m and n are natural numbers; and R* is an optically active group containing an asymmetric carbon atom, and a liquid crystal composition containing said compound as a component. This compound is excellent in optical stability and high-speed response.
