摘要:
Optically active compounds having a large spontaneous polarization value and capable of affording a composition exhibiting a suitable ferroelectric liquid crystal temperature range have the formula: in which one of R¹ and R² is a C₁-C₂₀ alkyl or alkoxy group, and the other of R¹ and R² is an optically active group.
摘要:
Compounds suitable for use in liquid crystal compositions (for example for use as light switching elements) have the formula: in R¹ is a straight or branched chain alkyl, alkoxy, alkanoyl, alkanoyloxy, alkoxycarbonyl, alkoxycarbonyloxy or alkoxyalkyl group, each containing from 1 to 20 carbon atoms; R² is hyrogen atom or a straight or branched alkyl, alkoxy or ω-halogen-substituted alkyl group, cyano, thioalkyl, alkoxy, alkanoyl, alkanoyloxy, alkoxycarbonyl or alkoxycarbonyloxy group, each containing from 1 to 15 carbon atoms; each independently represent a group (in which X is hydrogen, fluorine, chlorine atom or a cyano, methyl or trifluoromethyl group); m is 0 or 1; n is a natural number of 1 to 10; and the symbol * indicates that the carbon atom to which the symbol X is attached is an symmetric carbon atom.
摘要:
The present invention provided optically active alcohols represented by the general formula: R¹-A- HCH₃
wherein R¹ indicates an alkyl or alkyloxy group having a carbon number of 1-18, and A indicates a phenyl or a biphenyl group; or a phenyl or biphenyl group having a halogen atom or a cyano group. The alcohols are intermediates of optically active materials useful for components of liquid crystal materials for liquid crystal display elements having quick response.
摘要:
The optically active compounds represented by a general formula: wherein R¹ indicates an alkyl or an alkyloxy group having a carbon number of 1-18, R² indicates an alkyl group having a carbon number of 1-18, and A indicates a biphenyl group or a biphenyl group having a halogen atom or a cyano group are provided. The optically active compounds are useful for liquid crystal elements, especially for components of ferroelectric liquid crystal mixtures inducing high value of spontaneous polarization.
摘要:
Compounds suitable for use in liquid crystal compositions (for example for use as light switching elements) have the formula: in R¹ is a straight or branched chain alkyl, alkoxy, alkanoyl, alkanoyloxy, alkoxycarbonyl, alkoxycarbonyloxy or alkoxyalkyl group, each containing from 1 to 20 carbon atoms; R² is hyrogen atom or a straight or branched alkyl, alkoxy or ω-halogen-substituted alkyl group, cyano, thioalkyl, alkoxy, alkanoyl, alkanoyloxy, alkoxycarbonyl or alkoxycarbonyloxy group, each containing from 1 to 15 carbon atoms; each independently represent a group (in which X is hydrogen, fluorine, chlorine atom or a cyano, methyl or trifluoromethyl group); m is 0 or 1; n is a natural number of 1 to 10; and the symbol * indicates that the carbon atom to which the symbol X is attached is an symmetric carbon atom.
摘要翻译:适用于液晶组合物(例如用作光转换元件)的化合物具有下式:R 1中的是直链或支链烷基,烷氧基,烷酰基,烷酰氧基,烷氧基羰基,烷氧基羰基氧基或烷氧基烷基 各自含有1至20个碳原子; R 2是氢原子或含有1至15个碳原子的直链或支链烷基,烷氧基或ω-卤素取代的烷基,氰基,硫代烷基,烷氧基,烷酰基,烷酰氧基,烷氧基羰基或烷氧羰基氧基; CHEM各自独立地表示基团CHEM(其中X是氢,氟,氯原子或氰基,甲基或三氟甲基); m为0或1; n为1〜10的自然数; 符号*表示符号X所附着的碳原子为对称碳原子。
摘要:
A novel liquid crystal compound represented by the general formula (I): (wherein R is a straight or branched alkyl or alkoxy group having 1 to 20 carbon atoms, R' is an optically active alkyl group having 4 to 20 carbon atoms, X is a fluorine atom or a chlorine atom, and n is 1 or 2), a liquid crystal composition containing at least one liquid crystal compound of the general formula (I), a chiral smectic liquid crystal composition containing at least one liquid crystal compound of the general formula (I), and an optical switching element utilizing the chiral smectic liquid crystal composition containing at least one liquid crystal compound of the general formula (I) are described.
摘要:
An optically active liquid crystal compound having a large spontaneous polarization value and a chiral smectic liquid crystal composition contianing the same are provided, which compound is expressed by the formula wherein R 1 and R 2 each represent an alkyl group of 4 to 18 carbon atoms and ℓ represents 1 or 0.
摘要:
A novel optically active liquid crystal compound and a liquid crystal composition containing the same are provided, which compound is expressed by the formula wherein R 1 is alkyl or alkoxy of 4 - 18 C; R 2 is alkyl, alkoxy, acyl or alkoxymethyl of 4 - 18C; but either one of R 1 or R 2 is an optically active group; either one of X 1 or X 2 is halogen atom and the other is H; m and n each are 0 or 1 and m+n is 0 or 1.
摘要:
A liquid crystal compound containing an optically active group, suitable for use in a display mode utilizing ferroelectric liquid crystals, and a composition containing the same are provided, which compound is an optically active compound expressed by the general formula wherein X represents an alkyl group or an alkoxy group each having 1 to 18 carbon atoms and R * represents an optically active group.
摘要:
Novel chiral smectic liquid crystalline ester compounds of superior stability and high response rate being suited for use in chiral smectic mixtures are of the formula wherein n represents an integer of 2 to 16; 1 represents 0, 1 or 2 and m represents 1 or 2, provided that the sum of (+m is at least 2; X represents a methylene group or a single bond when (=0, a methylene group or an ether linkage when (=1, or an ether linkage when ( = 2; Y represents R, OR, -COR, - OCOR, -OCOOR, or -COOR wherein R represents an alkyl group of 1 to 18 carbon atoms; and asterisk * shows an optically active carbon atom.