117599-73-2Relevant academic research and scientific papers
A chiral electrooptic response in a racemic liquid crystal
Cowling, Stephen J.,Hall, Alan W.,Goodby, John W.
, p. 1546 - 1548 (2007/10/03)
Over recent years, little attention has been paid to the electrooptic properties of racemic modifications of smectic liquid crystals, however, in this communication we report on a chiral response of a racemic modification to an applied electrical field wh
Two-rings-containing phenyl ester compound and anti-perroelectric liquid crystal composition containing the same
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, (2008/06/13)
A two-rings-containing phenyl ester compound of the following general formula (1), wherein R1 is a linear alkyl group having 5 to 12 carbon atoms, R2 is a linear alkyl group having 1 to 15 carbon atoms, X1 and X2 are both hydrogen atoms or one of X1 and X2 is a fluorine atom and the other is a hydrogen atom, Y1 and Y2 are both hydrogen atoms or one of Y1 and Y2 is a fluorine atom and the other is a hydrogen atom, and A1 is a hydrogen atom, -CH3 or -CF3, provided that when A1 is a hydrogen atom or -CH3, p is 0 and that when A1 is -CF3, p is 1 and q is an integer of 5 to 8, and an anti-ferroelectric liquid crystal composition containing at least one of two-rings-containing phenyl ester compounds of the above general formula (1) in claim 1 and either an anti-ferroelectric liquid crystal compound or a mixture of anti-ferroelectric liquid crystal compounds.
Racemic compound and anti-ferroelectric liquid crystal composition
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, (2008/06/13)
A racemic compound of the formula (1) and an anti-ferroelectric liquid crystal composition consisting essentially of said racemic compound and one anti-ferroelectric liquid crystal compound of the formula (2) or a mixture of two or more compounds selected
Process for the production of phenol derivatives
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, (2008/06/13)
A process for the production of a phenol derivative of the formula (2), which comprises subjecting a diester compound of the formula (1) in which a hydroxyl group is protected by an acyl group, to a reaction for removal of protection, wherein the reaction is carried out in the presence of an aliphatic amine as a protection-removal agent, STR1 wherein X is hydrogen or fluorine, Y is --CH3 or --CF3, Q is an alkyl group having 1 to 4 carbon atoms, p is 0 or 1, m is an integer of 2 to 7, n is an integer of at least 1, and C* is an asymmetric carbon, the process enabling to obtain the phenol derivative of the formula (2) useful as an intermediate for a liquid crystal compound with ease and at high purity.
Liquid crystal compound
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, (2008/06/13)
A liquid crystal compound represented by formula (I): STR1 wherein R1 represents an alkyl group having from 5 to 18 carbon atoms; R2 represents an alkyl group having from 4 to 15 carbon atoms; X represents a single bond, --O--, STR2
Liquid crystal compound
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, (2008/06/13)
A new tetrastable liquid crystal is provided which is useful for display and switching devices. The liquid crystal has the formula STR1 where R1 is a C5-18 alkyl group and R2 is a C4-15 alkyl group and * is an o
Liquid crystal carbonatobenzoic acid derivative and composition
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, (2008/06/13)
An optically active liquid crystal compound having a large spontaneous polarization value and a chiral smectic liquid crystal composition containing the same are provided, which compound is expressed by the formula STR1 wherein R1 and R2/
Synthesis and Physical Evaluation of Novel Ferroelectric Materials with High Spontaneous Polarization
Bone, M. F.,Bradshaw, M. J.,Chan, L. K. M.,Coates, D.,Constant, J.,et al.
, p. 117 - 134 (2007/10/02)
A large number of ferroelectric dopants incorporating a chiral lactate unit, -OC*H(CH3)CO2-, have been synthesized and extrapolated values of Ps as high as 160 nC cm-2 have been found, although many of these compounds did not show any liquid crystal behavior.Terphenyls and laterally fluoro-substitued terphenyls incorporating the chiral lactate unit have also been synthesized, and in one case, a ferroelectric host material with an S*C phase and a Ps value of 124 nC cm-2 was obtained.Compounds containing two chiral units (one of which was a chiral lactate unit) were also synthesized in which the two chiral units were either directly linked or separated by a phenyl ring; the latter compounds gave very high Ps values (199 nC cm-2).The effect of molecular structure on Ps, tilt angle and phase behavior is discussed for both the mono-lactates and the di-chiral compounds.An outline (with references) of the experimental procedures used to prepare these compounds is also given.
