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: The invention relates to a process for the preparation of trans-indenofluorene compounds of the formula (Ia) or cis-indenofluorene compounds of the formula (Ib) in a reaction with at least one compound of the formula (IIa) or (IIb) respectively with at least one compound of the R-Hal in the presence of at least one organic base and at least one organic, polar, aprotic solvent.

Abstract: The present invention relates to inducing layer materials for the preparation of weak epitaxial films of non-planar metal phthalocyanine. The characteristics of the inducing layer materials lies in that the said inducing layer materials replace benzene rings of sexiphenyl by conjugated aromatic group and to replace the hydrogen atoms of benzene rings at the two ends of sexiphenyl by fluorine atoms, thus the regulation of molecular interaction is finally realized by changing the size or the linearity degree of the conjugated aromatic groups, as well as by changing the polarity of the benzene ring at the two ends, consequently, the cell parameters of (001) crystal face of the new materials are different from that of sexiphenyl and to achieve a effect of inducing the weak epitaxy growth of non-planar metal-phthalocyanine.

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: The invention provides a five-ring liquid crystal compound having a CF2O bonding group as a new compound having a general physical properties necessary for compounds, stability to heat, light and so forth, a wide temperature range of liquid crystal phases, a high clearing point, a good compatibility with other compounds, a large dielectric anisotropy and refractive index anisotropy, and an especially high clearing point and an especially large refractive index anisotropy, and provides a liquid crystal composition and a liquid crystal display device.

Abstract: Provided are liquid crystal compounds and mixtures incorporating the same. The liquid crystal compounds of the invention generally comprise a terminal cyclopentene group, along with at least two other ring groups.

Abstract: Provided are liquid crystal compounds and mixtures incorporating the same. The liquid crystal compounds of the invention generally comprise a cyclopentane group and at least two other rings. In one embodiment, the liquid crystal compounds of the invention comprise a cyclopentane group and at least two other rings, one of which is a fused ring system.

Abstract: The invention provides a liquid crystal compound which has stability to heat, light and so forth, a nematic phase in a wide temperature range, a small viscosity, a large optical anisotropy, and a suitable elastic constant K33, and further has a suitable and negative dielectric anisotropy and an excellent compatibility with other liquid crystal compounds. Moreover, the invention provides a liquid crystal composition comprising this liquid crystal compound and a liquid crystal display device containing this liquid crystal composition. A liquid crystal compound represented by formula (a): for example, R1 and R2 are alkyl having 1 to 10 carbons, alkenyl having 2 to 10 carbons or alkoxy having 1 to 9 carbons; ring A1 and ring A2 are 1,4-phenylene or trans-1,4-cyclohexylene; L1 and L2 are hydrogen or fluorine, and at least one of L1 and L2 is fluorine; and Z1 and Z2 are a single bond, —(CH2)2—, —CH?CH—, —CH2O— or —OCH2—.

Abstract: The invention relates 1,2,3,6,7,8-hexahydro-s-indacene derivatives and 6,7-dihydro-5H-indeno[5,6-d]-1,3-dioxole derivatives, and to the use thereof as component(s) in liquid-crystalline media. In addition, the present invention relates to liquid-crystal and electro-optical display elements which contain the liquid-crystalline media according to the invention.

Abstract: Provided are a condensed ring aromatic compound for an organic light-emitting device, and an organic light-emitting device having optical output with high efficiency and high luminescence and having durability. An organic light-emitting device including an anode and a cathode, and a layer made of an organic compound interposed between the anode and the cathode, wherein at least one layer of the layers made of the organic compound contains a condensed ring aromatic compound shown in the following general formula [1]: wherein R1 to R16 each independently represent a hydrogen atom, a halogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkoxy group, a substituted or unsubstituted aryloxy group, a substituted or unsubstituted amino group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted heterocyclic group, and may be the same or different.

Abstract: The invention provides a liquid crystal compound represented by the following formula having stability to heat, light and so forth, a wide temperature range of a nematic phase, a small viscosity, a large optical anisotropy and a suitable elastic constant K33 (K33: bend elastic constant), and further having a suitable and negative dielectric anisotropy and an excellent compatibility with other liquid crystal compounds, and provides a liquid crystal composition including the compound, wherein R1 and R2 are hydrogen, alkyl or the like, ring A1 is trans-1,4-cyclohexylene, 1,4-phenylene or the like, L1 to L4 are hydrogen or fluorine, and at least three of them are fluorine; when the ring A1 is trans-1,4-cyclohexylene or the like, Z1 is a single bond, —(CH2)2— or the like, when ring A1 is 1,4-phenylene, Z1 is —(CH2)2— or the like.

Abstract: Aromatic and aromatic/heteroaromatic molecular structures with controllable electron conducting properties are derived from the incorporation of electron active substituents in selective positions.

Abstract: Compounds are disclosed for the production of chemiluminescent light, particularly for the production of blue/violet light within the range of about 390 nm to less than 438 nm, and most particularly to the use of compounds composed of symmetrically and asymmetrically substituted anthracenes which are effective for increasing the production of such blue/violet light when used as fluorescers in conjunction with chemiluminescent systems. These systems utilize derivatives of 9,10-diphenylanthracene containing one or more fluorines As shown in General Formulae 1-3. The variables shown in Formulae 1-3 are defined in the specification.

Abstract: The invention provides a liquid crystal compound having stability to heat, light and so forth, a wide temperature range of a nematic phase, a small viscosity, a suitable optical anisotropy, a suitable elastic constant K33, a suitable and negative dielectric anisotropy, and an excellent compatibility with other liquid crystal compounds. The invention provides a liquid crystal composition containing the compound described above and having stability to heat, light and so forth, a small viscosity, a suitable optical anisotropy, a suitable and negative dielectric anisotropy, a suitable elastic constant K33, a low threshold voltage, a high maximum temperature of a nematic phase, and a low minimum temperature of the nematic phase. The invention also provides a liquid crystal display device having a short response time, a small power consumption, a low driving voltage, and a large contrast, and containing the composition described above which can be used in a large temperature range.

Abstract: The present invention relates to dielectrically positive liquid-crystalline media comprising one or more compounds of the formula I in which the parameters have the meaning indicated in the specification, and optionally one or more compounds selected from the group of the compounds of the formulae II and III in which the parameters have the meaning indicated in the specification, and optionally one or more compounds of the formula IV in which the parameters have the meaning indicated in the specification, and to liquid-crystal displays containing these media, especially to active-matrix displays and in particular to TN, IPS and FFS displays.

Abstract: The invention provides a liquid crystal compound having stability to heat, light and so forth, a wide temperature range of a nematic phase, a small viscosity, a suitable optical anisotropy, and a suitable elastic constant K33, and further having a suitable and negative dielectric anisotropy and an excellent compatibility with other liquid crystal compounds, and a liquid crystal composition having stability to heat, light and so forth, a low viscosity, a large optical anisotropy, a suitable and negative dielectric anisotropy, and a suitable elastic constant K33, a low threshold voltage, a high maximum temperature (phase-transition temperature on a nematic phase-isotropic phase) of a nematic phase, and a low minimum temperature of the nematic phase. The liquid crystal compound which has a specific structure having fluorine at a lateral position and also having phenylene in which hydrogen on the benzene ring is replaced by fluorine, and a liquid crystal composition containing the compound are prepared.

Abstract: The present invention relates to novel organic electroluminescent materials and organic light emitting devices comprising the same. Since the organic electroluminescent materials according to the invention have good luminous efficiency and life property as an electroluminescent material, OLED's having very good operation lifetime can be produced.

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: Known compounds showing negative dielectric anisotropy show negative dielectric anisotropy of relatively large values but are not satisfactory in view of the balance of the physical property as the liquid crystal material such as having low clearing point and showing high viscosity. The present invention intends to provide a liquid crystalline compound showing a negative dielectric anisotropy, as well as having excellent balance for physical property such as having relatively high clearing point, relatively low viscosity, appropriate optical anisotropy, and excellent compatibility with other liquid crystalline compounds. The compound of the invention is a compound represented by Formula (1) or Formula (2).

Abstract: Disclosed are a carbon nano-tube (CNT) thin film treated with chemical having an electron withdrawing functional group and a manufacturing method thereof. Specifically, the CNT thin film comprises a CNT composition to be applied on a plastic substrate. The CNT composition comprises a CNT; and chemical connected to the CNT and having an electron withdrawing functional group. In addition, the method for manufacturing a CNT thin film comprises steps of preparing a CNT; treating the CNT with chemical having an electron withdrawing functional group; mixing the CNT treated with the chemical with a dispersing agent or dispersing solvent to prepare a CNT dispersed solution; and forming a CNT thin film with the CNT dispersed solution. According to the CNT thin film and the manufacturing method thereof, a resistance of an electrode is decreased to improve the electric conductivity of the electrode.

Abstract: Disclosed are liquid-crystal (LC) media for use in LC displays of the PS (polymer stabilised) or PSA (polymer sustained alignment) type which contain a liquid-crystal (LC) mixture that contains one or more compounds of formula I

Abstract: Disclosed are compounds of formula I processes for the preparation thereof, and liquid-crystalline media and electro-optical displays containing said compounds.

Abstract: The present invention relates to the compounds of the formula (1) and to organic electroluminescent devices, in particular blue-emitting devices, in which these compounds are used as host material or dopant in the emitting layer and/or as hole-transport material and/or as electron-transport material.

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 present invention relates to new semiconductive oligomers and polymers, a process for their manufacture and their use in thin film electronic and optical devices, such as organic light emitting diodes (OLED) and photovoltaic devices, eg. solar cells and photodetectors.

Abstract: A fluorine-containing polycyclic aromatic compound represented by the following formula (I) is provided. According to present invention, a novel compound capable of being utilized as an organic n-type semiconductor having an excellent electron transport property is provided, wherein in formula (I), Ar1 and Ar2 each independently represent an aromatic hydrocarbon group having at least six carbon atoms or a heterocyclic group having at least four carbon atoms; R1, R2, R3 and R4 each independently represent a hydrogen atom, a halogen atom, or a monovalent group; R5 and R6 each independently represent a hydrogen atom or a monovalent organic group that may be substituted with a substituent; s1 and t1 each independently represent an integer of at least 2; with the proviso that at least one of R5 and R6 is the abovementioned monovalent organic group where at least one of all the hydrogen atoms of the monovalent organic group including the substituent is substituted with a fluorine atom.

Abstract: The present invention relates to cyclobutane and spiro[3.3]heptane compounds, to a process for the preparation thereof, to the use thereof as components in liquid-crystalline media, and to electro-optical display elements which contain these liquid-crystalline media.

Abstract: The invention relates 1,2,3,6,7,8-hexahydro-s-indacene derivatives and 6,7-dihydro-5H-indeno[5,6-d]-1,3-dioxole derivatives, and to the use thereof as component(s) in liquid-crystalline media. In addition, the present invention relates to liquid-crystal and electro-optical display elements which contain the liquid-crystalline media according to the invention.

Abstract: To provide a crosslinkable fluorinated aromatic prepolymer which is capable of forming a cured product having a low relative permittivity, high heat resistance, low birefringence and high flexibility, and its uses.

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: The present invention relates to an anthracene compound and an organic electroluminescent display device using the same. Particularly, the present invention relates to an anthracene compound which has good blue light emitting property, transports holes and electrons efficiently to enable an organic electroluminescent display device to have a low voltage, high brightness and long lifetime, and an organic electroluminescent display device using the same.

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: An organic light emitting device having a high efficiency and durability is provided. The organic light emitting device includes an anode, a cathode and a layer formed of an organic compound interposed between the anode and the cathode, and contains at least one kind of the fluorene compound represented by the following general formula (I) or (II): wherein R1 to R4 each represent an alkyl group, a fluorinated alkyl group, a substituted or unsubstituted aralkyl group, or a substituted or unsubstituted aryl group; and Ar1 to Ar8 represent a substituted or unsubstituted aryl group or a substituted or unsubstituted polycondensed aromatic group.

Abstract: The invention provides a host material for organic light emitting diodes, having the general formula: wherein R1 is selected from a C1-8 alkyl group, each R2 is independently selected from a hydrogen or a C1-8 alkyl group, Ar is selected from a C5-14 aromatic or hetero aromatic group, R3 is selected from a C5-14 aromatic or hetero aromatic group, a C1-8 alkyl group, a C5-8 cycloalkyl group, a C1-8 fluoroalkyl group, or a C1-8 alkoxyl group, and n is an integer of 1-10. The host materials have a higher energy gap (greater than 4.0 eV), and high thermal stability.

Abstract: An optically active quaternary ammonium salt compound represented by formula (1), wherein R1 represents a halogen, a C1-8 alkyl which is optionally substituted and which is linear, branched, or cyclic, a C2-8 alkenyl which is optionally substituted, a C2-8 alkynyl which is optionally substituted, a C6-14 aryl which is optionally substituted, a C3-8 heteroaryl which is optionally substituted, a C1-8 alkoxy which is optionally substituted and which is linear, branched, or cyclic, or a C7-16 aralkyl which is optionally substituted; R2 and R21 each independently represents hydrogen, halogen, nitro, a C1-8 alkyl which is optionally substituted and which is linear, branched, or cyclic, a C2-8 alkenyl which is optionally substituted, a C2-8 alkynyl which is optionally substituted, a C6-14 aryl which is optionally substituted, a C1-8 alkoxy which is optionally substituted and which is linear, branched, or cyclic, or a C7-16 aralkyl which is optionally substituted; one of combinations of R1 and R21, and R2 and R

Abstract: Provided are a condensed ring aromatic compound for an organic light-emitting device, and an organic light-emitting device having optical output with high efficiency and high luminescence and having durability. An organic light-emitting device including an anode and a cathode, and a layer made of an organic compound interposed between the anode and the cathode, wherein at least one layer of the layers made of the organic compound contains a condensed ring aromatic compound shown in the following general formula [1]: wherein R1 to R16 each independently represent a hydrogen atom, a halogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkoxy group, a substituted or unsubstituted aryloxy group, a substituted or unsubstituted amino group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted heterocyclic group, and may be the same or different.

Abstract: There is provided a benzo[a]fluoranthene compound represented by the following general formula (I): wherein at least one of R14, R15, R16, R20, and R21 represents Rn represented by the following general formula (i), and R11 to R22 none of which is represented by Rn each represent a hydrogen atom, a halogen atom or the like, and R11 to R22 none of which is represented by Rn may be identical to or different from one another; wherein R23, R24, R25, R26, and R27 each represent a hydrogen atom, a halogen atom or the like, and R23, R24, R25, R26, and R27 may be identical to or different from one another, provided that, in at least one pair of adjacent substituents out of R23, R24, R25, and R26, the substituents are bonded to each other to form a ring.

Abstract: The subject invention relates to a process for the synthesis of highly active binary metal fluoride system for the fluorination of aromatic compounds. Fluorinated aromatic compounds are valuable synthons for the chemical synthesis of pharmaceutical drugs and novel polymers. Fluorobenzene is used to control carbon content in steel manufacturing, is an intermediate for pharmaceuticals, pesticides and other organic compounds. Fluorobenzene is typically produced by the reaction of aniline and sodium nitrite in the presence of hydrogen fluoride. The present invention relates to a process for the synthesis of highly active binary metal fluoride system consists of copper (II) fluoride and aluminum (III) fluoride for the fluorination of aromatic compounds in gas phase and recycling of the reagent, in situ, using O2 and HF.

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: 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 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: There are provided a heteroacene derivative having an excellent oxidation resistance and capable of forming a semiconductor active phase by a coating process, and an oxidation-resistant organic semiconductor material using the same, as well as an organic thin film.

Abstract: The present invention concerns a compound of formula (I): wherein R1 is C1-4 alkyl, or benzyl optionally substituted by halogen, C1-4alkyl (optionally substituted by halogen or C1-4 alkoxy), C1-4 alkoxy, C1-4 alkoxycarbonyl, nitro or cyano; and a process for preparing a compound of formula (I).

Abstract: Provided is a novel fluorene compound, which is represented by the following general formula (1):

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: Fluorinated paracyclophane compounds represented by the formula: where least one of R1 and R2 comprises a fluorinated moiety is disclosed. These compounds can be utilized as precursor dimer compounds to produce polymeric coatings comprising copolymers of trifluorinated paraxylylene, including flexible fluorinated paraxylylene coatings.

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: The present invention provides a high-performance organic light-emitting device, and a novel organic compound for use in the device. The novel compound of the present invention is a 4-arylfluorene compound having a specific structure. The organic light-emitting device of the present invention is an organic light-emitting device including: a pair of electrodes comprising an anode and a cathode; and an organic compound layer interposed between the pair of electrodes, wherein the organic compound layer contains the 4-arylfluorene compound.

Abstract: A polymerizable liquid crystal composition containing compounds represented by the formula (1-1) and the formula (1-2), compounds represented by the formula (2-1) and the formula (2-2), and a compound represented by the formula (3-1): the polymerizable liquid crystal composition having homogeneous, homeotropic, or hybrid alignment, which can be coated on a support substrate, for example, of a transparent plastic film such as a triacetyl cellulose film or cycloolefin polymer film, or glass, and is aligned on a substrate as a polymer film while maintaining the alignment.