摘要:
Provide is a novel phenylacetylene compound (1) which has a large anisotropy of refractive index, tends to be mixed with other liquid crystals, and is more advantageous in stability to light, a liquid crystal composition and a liquid crystal element usable for an optical shutter, a display element, ##STR1## A.sup.1 to A.sup.12 each independently represent a hydrogen atom, a fluorine atom, or an alkyl group having 1 to 10 carbon atoms, and at least one is an alkyl group.
摘要:
A fluorine-containing optically active compound represented by the formula (1): ##STR1## wherein R.sub.1 is a saturated or unsaturated C.sub.3 -C.sub.20 alkyl group or a saturated or unsaturated C.sub.3 -C.sub.20 alkoxyalkyl group; A.sup.1, A.sup.2 and A.sup.3 independently represent one of the following groups: ##STR2## provided that, when A.sup.1 is a condensed ring group, a sum of p and q is 0 or 1 and A.sup.2 and A.sup.3 are both monocyclic groups, or when A.sup.1 is a monocyclic group, a sum of p and q is 1 or 2 with the proviso that when the sum of p and q is 2, A.sup.2 and A.sup.3 are both monocyclic groups; X is --CH.sub.2 CH.sub.2 --, --CH.dbd.CH-- or --C.tbd.C--; W is a fluorine atom or a hydrogen atom; n is an integer of 1 to 10; m, p and q are each 0 or 1; u and w are each an integer of 0 to 3; and * indicates an asymmetric carbon atom, which is useful as a component of a liquid crystal mixture.
摘要:
Optically active biphenyl derivatives including optically active biphenyl carboxylic acid derivative, hydroxybiphenyl derivative, alkoxybiphenylalkanol derivative and alkoxybiphenylalkanol derivative have the following structural formula: ##STR1## wherein R.sup.1 represents an alkyl group of 3-20 carbon atoms, R.sup.2 represents an alkyl group or alkoxyalkyl group of 1-20 carbon atoms which may optionally be substituted with at least one halogen atom. X represents --O--, --COO-- or --OCO--, m represents 0 or 1, n represents an integer of 1-6 and p represents 0 or 1, and the * mark represents an asymmetric carbon atom. These optically active biphenyl derivatives are useful as a ferroelectric liquid crystal material or its component having a sufficient spontaneous polarization and by which a high speed response is possible and which further exhibits a ferroelectric liquid crystal phase in a temperature region around room temperature.
摘要:
Disclosed in this invention are the phenylpyrimidine derivatives represented by the general formula I: ##STR1## the alcohols represented by the formula: ##STR2## usable as starting material for the preparation of the phenylpyrimidine derivatives, and the processes for preparing such derivatives. The phenylpyrimidine derivatives of the formula I according to the present invention have very excellent properties as a liquid crystal compound and can be utilized effectively for the production of liquid crystal elements.
摘要:
A ferroelectric chiral smectic liquid crystal mixture comprising a compound of the formula (I): ##STR1## and at least one compound selected from the group consisting of a compound of the formula (II): ##STR2## and a compound of the formula (III): ##STR3##
摘要:
Disclosed in this invention are the phenylpyrimidine derivatives represented by the general formula I: ##STR1## the alcohols represented by the formula: ##STR2## usable as starting material for the preparation of the phenylpyrimidine derivatives, and the processes for preparing such derivatives. The phenylpyrimidine derivatives of the formula I according to the present invention have very excellent properties as a liquid crystal compound and can be utilized effectively for the production of liquid crystal elements.
摘要:
Disclosed in the present invention are the optically active aromatic compounds having a trifluoromethyl group useful as a component of ferroelectric liquid crystal compositions, a process for preparing the above compounds, liquid crystal compositions having the above compounds as an active ingredient, and liquid crystal elements using the above compositions. The optically active aromatic compounds of the Present invention represented by the formula: ##STR1## have the very excellent properties as a liquid crystal material and are useful for the preparation of liquid crystal compositions and the liquid crystal elements using such compositions.
摘要:
Disclosed is a metal complex which has a central metal (M) selected from the group consisting of Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Y, Zr, Nb, Mo, Tc, Ru, Rh, Pd, Ag, Cd, Hf, Ta, W, Re, Pt, Au and Hg. The metal complex has no halogen unidentate ligand. In the metal complex, the sum total of the square values of the orbital coefficients of the outermost d orbitals of the central metal comprises ⅓ or higher of the sum total of the square values of all of the atomic orbital coefficients in the highest occupied molecular orbital (HOMO) given by a computational scientific technique, the energy difference (S1−T1) between the minimum singlet excitation energy (S1) and the minimum triplet excitation energy (T1) given by a computational scientific technique falls within the range from 0.1 (eV) to 1.0 (eV) inclusive, and the oscillator strength (f) falls within the range from 0.005 and 1.0 inclusive.
摘要:
The present invention relates to a polymer film comprising a polymer having liquid crystallinity, having a number-average molecular weight in terms of polystyrene of 103 to 108 and having an electron mobility or hole mobility of 10−5 cm2/Vs or more, and having a film thickness in the range from 1 nm to 100 μm. This polymer film can be used for various polymer film devices such as an organic transistor, organic solar battery, optical sensor, electrophotographic photoreceptor, spatial light modulator, photorefractive device and the like.
摘要翻译:本发明涉及一种聚合物膜,其包含具有液晶性的聚合物,其聚苯乙烯换算的数均分子量为10 -3至10 8,并具有电子 迁移率或空穴迁移率为10 -5 cm 2 / Vs以上,膜厚度在1nm〜100μm的范围内。 该聚合物膜可用于有机晶体管,有机太阳能电池,光学传感器,电子照相感光体,空间光调制器,光折射装置等各种聚合物膜装置。
摘要:
The present invention relates to a polymer film comprising a polymer having liquid crystallinity, having a number-average molecular weight in terms of polystyrene of 103 to 108 and having an electron mobility or hole mobility of 10−5 cm2/Vs or more, and having a film thickness in the range from 1 nm to 100 μm. This polymer film can be used for various polymer film devices such as an organic transistor, organic solar battery, optical sensor, electrophotographic photoreceptor, spatial light modulator, photorefractive device and the like.
摘要翻译:本发明涉及一种聚合物膜,其包含具有液晶性的聚合物,其聚苯乙烯换算的数均分子量为10 -3至10 8,并具有电子 迁移率或空穴迁移率为10 -5 cm 2 / Vs以上,膜厚度在1nm〜100μm的范围内。 该聚合物膜可用于有机晶体管,有机太阳能电池,光学传感器,电子照相感光体,空间光调制器,光折射装置等各种聚合物膜装置。