Abstract: A liquid crystal compound having high stability to heat and light, etc., a high clearing point, a low minimum temperature of liquid crystal phase, a low viscosity, a suitable optical anisotropy, a large dielectric anisotropy, a suitable elastic constant, and good compatibility with other liquid crystal compounds, a liquid crystal composition containing the compound, and a LCD element using the composition are described. The compound is represented by formula (1): wherein, for example, R1 is C1-10 alkyl, ring A1, ring A2, ring A3, ring A4 and ring B1 are independently 1,4-cyclohexylene, 1,4-phenylene, 1,4-phenylene in which at least one hydrogen is substituted with halogen, 1,3-dioxane-2,5-diyl, or tetrahydropyran-2,5-diyl, Z1, Z2, Z3 and Z4 are single bonds, l, m, n and o are independently 0 or 1, and l+m+n+o?1.

Abstract: The invention relates to a liquid-crystalline medium which comprises at least one compound of the formula I, in which R1, R1*, ring A have the meanings indicated in claim 1, and to the use thereof for an active-matrix display, in particular based on the VA, PSA, PS-VA, PALC, FFS or IPS effect.

Abstract: The present invention intends to provide a novel cyclohexane compound that can form a liquid crystal composition of which response speed is improved when mixed with a nematic liquid crystal and the like and to provide a specified liquid crystal composition in which a novel cyclohexane compound is mixed. The novel cyclohexane compound is represented by the following formula (1). (In the formula (1), R1 and R2 represent the same or different R, ROCO or RCOO, and the R represents an alkyl group. The alkyl group may have an unsaturated bond, and, in the group, —CH2— may be substituted with —O—, —CO— or —COO—, and a part of or an entirety of hydrogen atoms may be substituted with a halogen atom or a cyano group. X and Y each independently represents a halogen atom or a hydrogen atom and does not simultaneously represent a hydrogen atom. Further, alternatively, X represents an oxygen atom and Y represents a direct bond to the oxygen atom.

Abstract: A fluorinated polyester blend is prepared by melt blending a fluorovinyl ether functionalized polyester with a non-fluorinated polyester. The fluoroether functionalized polyester can be a homopolymer or a copolymer. The blend is useful for preparing fibers, yarns, fabrics, garments, carpets, and other shaped articles. The shaped articles exhibit durable soil, oil, and water repellency.

Abstract: A liquid crystal medium, which has a liquid crystal phase over a wide temperature range, a large refractive index anisotropy, and a large dielectric anisotropy, and exhibits an optically isotropic liquid crystal phase, is provided. The liquid crystal medium is characterized by containing a liquid crystal compound having four benzene rings and a difluoromethyleneoxy group, and a chiral reagent, and exhibiting an optically isotropic liquid crystal phase.

Abstract: Providing a liquid crystal composition satisfying at least one of characteristics such as high maximum temperature of nematic phase, low minimum temperature of the nematic phase, small viscosity, suitable optical anisotropy, large negative dielectric anisotropy, large specific resistance, high stability to ultraviolet light and heat, or having a suitable balance regarding at least two of the characteristics; and an AM device having short response time, large voltage holding ratio, large contrast ratio, long service life and so forth. The liquid crystal composition has a negative dielectric anisotropy and contains a specific two-ring compound having a low minimum temperature as a first component, a specific compound having a large negative dielectric anisotropy as a second component, a specific compound having a low viscosity as a third component, and a specific compound having a large negative dielectric anisotropy as a fourth component. The liquid crystal display device contains the composition.

Abstract: The present invention provides methods for determining the selectivity of an anesthetic for an anesthetic-sensitive receptor by determining the molar water solubility of the anesthetic. The invention further provides methods for modulating the selectivity of an anesthetic for an anesthetic-sensitive receptor by altering or modifying the anesthetic to have higher or lower water solubility. The invention further provides methods of inducing anesthesia in a subject by administering via the respiratory pathways (e.g., via inhalational or pulmonary delivery) an effective amount of an anesthetic compound identified according to the present methods.

Abstract: To provide a fluorinated compound having an RF group with at most 6 carbon atoms, whereby a fluorinated polymer having a highly durable water/oil repellency can be produced, and an environmental load is little, and a fluorinated polymer having a highly durable water/oil repellency and presenting little environmental load, obtainable by polymerizing such a fluorinated compound. A fluorinated compound represented by the following formula (I) and its polymer: CH2?C(M)COO(CH2)nPhXPhZCrF2r+1??(I) (in the formula (I), M is a hydrogen atom, a methyl group or a halogen atom, n is an integer of from 0 to 2, Ph is a phenylene group, X is CH2O or OCH2, Z is a single bond, a C1-4 alkylene group containing an etheric oxygen atom, or COO(CH2)m (wherein m is an integer of from 1 to 4), and r is an integer of from 1 to 6).

Abstract: A compound represented by the formula (1) is provided. In the formula (1), for example, R1 and R2 are alkyl having 1 to 10 carbons, alkoxy having 1 to 9 carbons or alkenyl having 2 to 10 carbons; the ring A and the ring B are 1,4-cyclohexylene or 1,4-phenylene; Z1 and Z2 are a single bond and Z3 is —CH2O— or —OCH2—; Y1 and Y2 are halogen, —CF3, —CHF2, —CH2F, —OCF3, —OCHF2 or —OCH2F; and m and n is 0, 1 or 2, p is 1 or 2, and the sum of m, n and p is 1, 2 or 3.

Abstract: A liquid crystal compound of Formula (1) is provided below: wherein R is hydrogen, linear or branching C1-15 alkyl, linear or branching C1-15 alkyl (wherein any one of —CH2— is replaced by —O—, —S—, —CO—, —CO—O—, or —O—CO—), linear or branching C2-15 alkenyl, or linear or branching C2-15 alkenyl (wherein any one of —CH2— is replaced by —O—, —S—, —CO—, —CO—O—, or —O—CO—), A and B are, independently, cyclohexane, cyclohexane (wherein any one of —CH2— is replaced by —O— or —NH—), benzene, or benzene (wherein any one of —CH2? is replaced by —N?), X is a single bond, —CO—O—, —O—CO—, —CH2O—, —OCH2—, —CH2CH2—, —C?C—, —C?C—, —CF2O—, or —OCF2—, Q is oxygen or CH2, Y is CF3, CF2H, or CFH2, L1, L2, and L3 are, independently, hydrogen or fluorine, and m is 0, 1, or 2.

Abstract: An embodiment of the invention provides a chiral dopant having the following formula: wherein X1 and X2 are independently wherein F is fluorine, m is a positive integer from 1 to 8, and n is a positive integer from 1 to 4; Y1 and Y2 are independently —O—, —CH2CH2—, —CH?CH—, —C(O)O—, or —CH2O—; and R1, R2 are independently substituted or non-substituted C1-C10 linear alkyl, wherein substituents of the substituted C1-C10 linear alkyl are independently —F, —Cl, —OCF3, —NCS, or —CN, wherein a number of backbone carbon atoms in each of —Y1R1 and —Y2R2 is larger than 3.

Abstract: A nematic phase liquid crystal compound with negative dielectric constant has a structure represented by wherein R1 represents a hydrogen atom or linear alkyl having 1 to 8 carbon atoms or linear alkenyl having 1-8 carbon atoms, or an alkoxy or alykenoxy formed by substituting one or nonadjacent two CH2 in the linear alkyl or alkenyl with oxygen atom, wherein 0 to 4 hydrogen atoms of R1 group can be substituted with fluorine; R2 represents a hydrogen atom or linear alkyl having 1 to 8 carbon atoms, or R2 represents a linear fluoroalkyl having 1 to 8 carbon atoms, in which group 1 to 4 hydrogens can be substituted with fluorine atoms; A represents a benzene ring or 1,4-cyclohexane ring, if A is a benzene ring 0 to 4 hydrogen atoms on the benzene ring may be substituted with fluorine; n=1 to 2, and m=0 to 2.

Abstract: In a process for the preparation of ring compounds via a combinatorial synthesis, the reaction procedure is based on a Suzuki coupling; subsequent halo-demetallation and finally a further Suzuki coupling. The Suzuki couplings are each carried out with a boronic acid or a boronic acid ester. The reaction procedure uses provides novel ring compounds and uses novel synthesis units used for this purpose. The novel ring compounds are suitable for use as constituents in liquid-crystalline mixtures.

Abstract: The invention relates to a liquid-crystalline medium which comprises at least one compound of the formula I, in which R1, R1*, ring A have the meanings indicated in Claim 1, and to the use thereof for an active-matrix display, in particular based on the VA, PSA, PS-VA, PALC, FFS or IPS effect.

Abstract: A nonaqueous solvent for an electrical storage device according to the present invention includes fluorine-containing cyclic saturated hydrocarbon having a structure represented by the following general formula (1) in which one or two substituents R are introduced into a cyclohexane ring; a compound having a relative dielectric constant of 25 or higher; and a chain carbonate (in general formula (1), R is represented by CnX2n+1 where n is an integer of 1 or greater, at least one of (2n+1) pieces of X's is F, and the other X's are H).

Abstract: A nonaqueous solvent for an electricity storage device according to the present invention comprises fluorine-containing cyclic saturated hydrocarbon having a structure which is represented by general formula (1) below and in which one or two substituents R are introduced into a cyclohexane ring (in general formula (1), R is represented by CnX2n+1, n is an integer of 1 or greater, at least one of (2n+1) pieces of X's is F, and the other X's are F or H).

Abstract: Article of manufacture comprising a substrate and a coating layer. The coating layer comprises at least one coating material, and is stably affixed to the substrate to form a stable, coated surface. The coated surface has a texture that mimics the topography of mammalian keratinous tissue and demonstrates at least one physical property representative of mammalian keratinous tissue, selected from the group consisting of a total surface energy of from about 15 mJ/m2 to about 50 mJ/m2, a dispersive component of the surface energy of from about 15 mJ/m2 to about 50 mJ/m2, a polar component of the total surface energy of from about 1 mJ/m2 to about 14 mJ/m2, a zeta-potential at a pH of about 5.0 of from about ?40 mV to about 30 mV, and combinations thereof.

Abstract: Described is the use of perfluoro-t-butyl cyclohexane in a contrast agent for molecular imaging, notably F MRI. Particularly, the perfluoro-t-butyl cyclohexane is present in the form of an aqueous emulsion of nanoparticles comprising the perfluoro compound as a core, and an emulsifying agent, such as a phospholipid, as a shell. The shell can be functionalized with other moieties that play a role in imaging, notably ligands for targeted binding and/or contrast agents or labels with a view to other imaging modalities. The latter particularly refers to 1H MRI contrast agents as well as radiolabels for SPECT.

Abstract: Provided is a nonaqueous solvent for an electrical storage device, including a fluorine-containing, cyclic, saturated hydrocarbon represented by the following general formula (1) and having a structure obtained by introducing one or two substituents R into a cyclopentane ring: in the general formula (1), R is represented by CnX2n+1, n represents an integer of 1 or more, at least one of the 2n+1 X's represents F, and the other X's each represent H.

Abstract: The invention relates to liquid-crystalline compounds of the formula I in which R1, R2, A1, A2, A3, A4, Z1, Z2, Z3, V, a, b and c have the meanings indicated in Claim 1, and to liquid-crystalline media comprising at least one compound of the formula I, and to electro-optical displays containing a liquid-crystalline medium of this type.

Abstract: In a process for the preparation of ring compounds via a combinatorial synthesis, the reaction procedure is based on a Suzuki coupling, subsequent halo-demetallation and finally a further Suzuki coupling. The Suzuki couplings are each carried out with a boronic acid or a boronic acid ester. The reaction procedure uses provides novel ring compounds and uses novel synthesis units used for this purpose. The novel ring compounds are suitable for use as constituents in liquid-crystalline mixtures.

Abstract: A liquid crystal composition comprising at least one compound having a fluorobicyclo[2.2.2]octane skeleton represented by formula (I) below is disclosed. A fluorobicyclo[2.2.2]octane compound represented by formula (II) below is also disclosed. In the formulae, Y represents a hydrogen atom or fluorine atom.

Abstract: Article of manufacture comprising a substrate and a coating layer. The coating layer comprises at least one coating material, and is stably affixed to the substrate to form a stable, coated surface. The coated surface has a texture that mimics the topography of mammalian keratinous tissue and demonstrates at least one physical property representative of mammalian keratinous tissue, selected from the group consisting of a total surface energy of from about 15 mJ/m2 to about 50 mJ/m2, a dispersive component of the surface energy of from about 15 mJ/m2 to about 50 mJ/m2, a polar component of the total surface energy of from about 1 mJ/m2 to about 14 mJ/m2, a zeta-potential at a pH of about 5.0 of from about ?40 mV to about 30 mV, and combinations thereof.

Abstract: The invention relates to a liquid-crystalline medium of negative dielectric anisotropy based on a mixture of polar compounds, which comprises at least one compound selected from the group of the compounds of the formulae IA, IB and IC in which R1A, R2A, R1B, R2B, R1C, R2C, L, m, n, o, p and b have the meanings indicated in Claim 1, and to the use thereof for an active-matrix display, in particular based on the ECB, PALC, FFS or IPS effect.

Abstract: A compound represented by the following formula (1), a liquid crystal composition containing the compound and a liquid crystal display device containing the composition: all the symbols in the formula (1) are defined in the specification.

Abstract: A liquid crystal compound represented by formula (1), a liquid crystal composition comprising the compound, and a liquid crystal display device comprising the composition: For example, R1 is alkyl having 1 to 20; ring A1, ring A2, ring A3, ring A4, ring A5, and ring A6 are 1,4-cyclohexylene or 1,4-phenylene; Z1, Z2, Z3, Z4, Z5, and Z6 is a single bond; X1 is hydrogen or halogen; l, m, n, o, p, and q are 0 or 1, and l+m+n+o+p+q is 3.

Abstract: In a process for the preparation of ring compounds via a combinatorial synthesis, the reaction procedure is based on a Suzuki coupling, subsequent halo-demetallation and finally a further Suzuki coupling. The Suzuki couplings are each carried out with a boronic acid or a boronic acid ester. The reaction procedure uses provides novel ring compounds and uses novel synthesis units used for this purpose. The novel ring compounds are suitable for use as constituents in liquid-crystalline mixtures.

Abstract: Medicine, in particular medications for treating blood losses, hypoxic and ishemic states, for improving a blood oxygen supply and for preserving isolated perfused organs and tissues. The inventive medical emulsion of perfluororganic compounds includes rapidly excretable perfluororganic compounds such as perfluordecalin, perfluoractilbromide, a perfluoroganic additive embodied in the form of a mixture of perfluorinated tertiary amines and phospholipids in the form of a water-salt dispersion. The perfluordecalin and perfluoractilbromide are contained in the composition of the rapidly excretable perfluororganic compounds at a ratio ranging from 10:1 to 1:10. The mixture of perfluorinated tertiary amines is embodied in the form of the mixture of perfluorotpripropylamine and the co-products thereof: cis- and trans-isomers perfluor-1-propyl 3,4-dimethylpirrolidone and perfluor-1-propyl-4-methhylpiperidine.

Abstract: In a process for the preparation of ring compounds via a combinatorial synthesis, the reaction procedure is based on a Suzuki coupling, subsequent halo-demetallation and finally a further Suzuki coupling. The Suzuki couplings are each carried out with a boronic acid or a boronic acid ester. The reaction procedure uses provides novel ring compounds and uses novel synthesis units used for this purpose. The novel ring compounds are suitable for use as constituents in liquid-crystalline mixtures.

Abstract: Disclosed are fluorostilbene compounds of formula I, liquid-crystal media which comprise these compounds, the use of the media in electro-optical displays, in particular in VAN LCDs, and a process for the preparation of these compounds.

Abstract: A liquid crystal compound selected from a group of compounds represented by formula (a): wherein Ra and Rb are each independently alkyl having 1 to 10 carbons, alkoxy having 1 to 9 carbons, alkoxyalkyl having 2 to 9 carbons, alkenyl having 2 to 10 carbons, alkenyloxy having 2 to 9 carbons, fluoroalkyl having 1 to 10 carbons or fluoroalkoxy having 1 to 9 carbons; ring A1, ring A2 and ring A3 are each independently trans-1,4-cyclohexylene, trans-1,3-dioxane-2,5-diyl, trans-tetrahydropyran-2,5-diyl, 1,4-phenylene, 2-fluoro-1,4-phenylene, 2,3-difluoro-1,4-phenylene, 2,5-difluoro-1,4-phenylene, 2,6-difluoro-1,4-phenylene, pyridine-2,5-diyl, 6-fluoropyridine-2,5-diyl or pyridazine-2,5-diyl; Z1, Z2 and Z3 are each independently a single bond, —(CH2)2—, —CH?CH—, —C?C—, —CH2O, —OCH2—, —COO—, —OCO—, —OCF2—, —CF2O—, —CH2CH2OCF2— or —CF2OCH2CH2—; l, m and n are each independently 0, 1 or 2, provided that l+m+n is 0, 1, 2 or 3; one of X1 and X2 is fluorine, and the other is chlorine; Q is and atoms comprising the

Abstract: A compound having the structure: w-A-x-CY—Z(CF3), where CY is cyclohexane or substituted cyclohexane, exemplified by 4-trifluoromethyl-4-methylcarboxy-4?-propyl-1,1?-(bi)cyclohexane.

Abstract: The disclosed is a liquid crystal compound and method for manufacturing the same. The liquid crystal compound can be used alone or mixed with commercially available liquid crystal compounds. Because low rotational viscosity of the liquid crystal compound of the invention, it can be used as positive or negative dielectric anisotropic liquid crystal composition.

Abstract: A nonaqueous solvent for an electricity storage device according to the present invention comprises fluorine-containing cyclic saturated hydrocarbon having a structure which is represented by general formula (1) below and in which one or two substituents R are introduced into a cyclohexane ring (in general formula (1), R is represented by CnX2n+1, n is an integer of 1 or greater, at least one of (2n+1) pieces of X's is F, and the other X's are F or H).

Abstract: The present invention provides a liquid crystal material, method for producing the liquid crystal material, and liquid crystal device thereof which shows low light absorption in the ultraviolet light region. A compound of formula (I) wherein R is an alkyl or alkenyl group which is optionally interposed with one or more oxygen or sulphur atoms, Y is independently selected from oxygen or sulphur, n is an integer of from 2 to 8, X is a direct bond, C1-4alkylene or C2-4alkenylene, and A is selected from a various specified ring structures. The liquid crystal material (compounds) are of low birefringence and are U.V. stable and are useful in liquid crystal devices that need low birefringence such as reflective displays, or which are exposed to high levels of U.V. light such as phosphor display cells.

Abstract: The present invention relates to cyclopenta[b]naphthalene derivatives to the use thereof in liquid-crystalline or mesogenic media, to liquid-crystalline or mesogenic media comprising at least one of these cyclopenta[b]naphthalene derivatives, and to electro-optical display elements containing these liquid-crystalline or mesogenic media.

Abstract: Such a liquid crystal compound is provided that has stability to heat, light and so forth, has a nematic phase in a wide temperature range, has a small viscosity, a suitable optical anisotropy, and suitable elastic constants K33 and K11 (K33: bend elastic constant, K11: splay elastic constant), and has suitable negative dielectric anisotropy and excellent compatibility with other liquid crystal compounds. A liquid crystal composition containing the liquid crystal compound, and a liquid crystal display device containing the liquid crystal composition are also provided.

Abstract: The invention relates to bimesogenic compounds of formula (I): R1-MG1-X1-Sp-X2-MG2-R2 wherein R1, R2, MG1, MG2, X1, X2 and Sp have the meaning given in claim 1, to the use of bimesogenic compounds of formula (I) in liquid crystal media and devices, in particular in flexoelectric liquid crystal devices, to liquid crystal media and devices, in particular flexoelectric devices, comprising bimesogenic compounds of formula (I) and to improvements in flexoelectric devices.

Abstract: Disclosed are compounds of formula I and dielectrically positive liquid crystalline media comprising a dielectrically positive component, component A, comprising a dielectrically positive compound of formula I, and optionally a second dielectrically positive component, component B, comprising one or more dielectrically positive compounds having a dielectric anisotropy of more than 3, and optionally a dielectric neutral component, component C, as well as to liquid crystal displays comprising these media, especially to active matrix displays and in particular to TN and to IPS displays.

Abstract: In a process for the preparation of ring compounds via a combinatorial synthesis, the reaction procedure is based on a Suzuki coupling, subsequent halo-demetallation and finally a further Suzuki coupling. The Suzuki couplings are each carried out with a boronic acid or a boronic acid ester. The reaction procedure uses provides novel ring compounds and uses novel synthesis units used for this purpose. The novel ring compounds are suitable for use as constituents in liquid-crystalline mixtures.

Abstract: A compound having the structure: w-A-x-CY-Z(CF3), where CY is cyclohexane or substituted cyclohexane, exemplified by 4-trifluoromethyl-4-methylcarboxy-4?-propyl-1,1?-(bi)cyclohexane.

Abstract: The invention relates to a process for the preparation of compounds containing at least one —CF2—O— bridge in the molecule, in which a) an acid is added onto at least one ketene dithioketal, b) the resultant bis(alkylthio)carbenium salt is reacted with at least one compound having at least one hydroxyl group in the presence of a base, c) and subsequently, preferably in situ, the resultant dithioorthoester is subjected to oxidative fluorodesulfurisation using a fluorinating agent and an oxidant to give the compound containing at least one —CF2—O— bridge in the molecule.

Abstract: A compound of formula (I) or a dimer thereof; where R1 and R2 are independently selected from optionally substituted alkyl, optionally substitituted alkenyl, optionally substituted alkynyl, a functional group or a group of sub-formula (i) —(O)m—(CH2)p—R7??(i) where m is 0 or 1; p is an integer of from 1 to 12; R7 is a group of formula —CqX2q+1 where q is an integer of from 1 to 12 and X is halogen such as fluoro, or R7 a group of sub-formula (ii) where k is an integer of from 1 to 10, R8, R10, and R12 and each R9 and R11 are independently selected from alkyl, alkenyl or aryl, such as lower alkyl and in particular methyl; provided that at least one of R1 or R2 is a group of sub-formula (i); R3, R4, R5 and R6 are independently selected from hydrogen or halogen, and in particular fluorine, n is 0 or 1, and A is a ring structure as specified. Compounds of formula (I) may have liquid crystal properties and/or be useful in liquid crystal devices.

Abstract: The invention relates to chiral compounds of formula (I) R1—X1-(A1-Z1)m-G-(Z2-A2)n-X2—R2, wherein R1, R2, X1, X2, A1, A2, Z1, Z2, G, m and n have the meaning given in claim 1, to liquid crystalline mixtures comprising at least one chiral compound of formula (I), to chiral linear or crosslinked liquid crystalline polymers obtainable by polymerizing a polymerizable mixture comprising at least one chiral compound of formula (I), to the use of chiral compounds of formula (I) and mixtures and polymers obtained thereof in liquid crystal displays, active and passive optical elements, adhesives, synthetic resins with anisotropic mechanical properties, cosmetic and pharmaceutical compositions, diagnostics, liquid crystal pigments, for decorative and security applications, nonlinear optics, optical information storage or as chiral dopants, and to a liquid crystal display comprising a mixture comprising at least one chiral compound of formula (I).

Abstract: The invention relates to novel cyclobutane derivatives of the formula (I), in which R1, R2, A, Z, m, n and o have the meaning indicated in claim 1, to the use thereof as components of liquid-crystalline media, and to liquid-crystal and electro-optical display elements which contain the liquid-crystalline media according to the invention

Abstract: The present invention provides a fluorinated compound having functional groups in a high concentration so that adequate characteristics of the functional groups can be obtained and having high transparency in a wide wavelength region, a fluoropolymer, and a process for its production. The present invention provides a fluorinated diene represented by the following formula (1): CF2?CFCH2CH(C(R1)(R2)(OH))CH2CH?CH2??(1) wherein each of R1 and R2 which are independent of each other, is a fluorine atom or a fluoroalkyl group having at most 5 carbon atoms.

Abstract: Fluorinated indenes and 1,7-dihydroindacenes of the general formulae (I) and (II) of negative dielectric anisotropy (??<0) in which T, A, R, L, X, Y, U, W, Z, n, m, p and q are as defined herein are suitable for use in liquid crystal display elements.

Abstract: The invention relates to liquid crystal compounds of formula (I), where X1, X2, X3, Z1, Z2, L1, L2, L3, L4, L5, L6, L7, L8, L9, L10, L11 and a have the meanings given in claim 1, and liquid crystal media containing at least one compound of formula (I) and electro-optical displays comprising such a liquid crystal medium

Abstract: A compound represented by the formula (1). wherein Ra is alkyl having 1 to 10 carbon(s) and, in that alkyl, any of —CH2— may be replaced with —O—, —S—, —CO—, —CH?CH— or —C?C— or any of hydrogens may be replaced with halogen or —CN; A1, A2 and A3 are independently 1,4-cycolohexylene, 1,4-cyclohexenylene, 1,4-phenylene, naphthalene-2,6-diyl, 1,2,3,4-tetrahydronaphthalene-2,6-diyl, decahydronaphthalene-2,6-diyl or 1,4-bicyclo[2.2.2]octylene and, in such a ring, any —CH2— may be replaced with —O—, any —CH? may be replaced with —N? and any hydrogen may be replaced with halogen; Z1, Z2 and Z3 are independently a single bond, —(CH2)2—, —(CF2)2—, —COO—, —OCO—, —CH2O—, —OCH2—, —CF2O—, —OCF2—, —CH?CH—, —CF?CF—, —C?C—, —(CH2)4—, —(CH2)3O— or —O(CH2)3—; p and q are independently 0 or 1. Also provided is a liquid crystal composition containing the same and a liquid crystal display element containing the composition.

Abstract: The invention relates to compounds of the formula I and to a liquid-crystalline medium based on a mixture of polar compounds of positive dielectric anisotropy, characterized in that it comprises one or more compounds of the general formula I in which R, A1, A2, Z1, Y, Z, L1, L2 and m are as defined herein.