Abstract: A triphenylamine derivative represented by the following general formula (1): wherein R1, R2, R3, R4, R5 and R6 may be the same or different and each represents a hydrogen atom, alkyl group, halogenated alkyl group, aryl group, dialkylamino group or cyano group; and &phgr;1 and &phgr;2 may be the same or different and each represents an aromatic condensed ring which may have a substituent. Also disclosed is an electroluminescence device comprising the triphenylamine derivative.

Abstract: A triphenylamine derivative represented by the following general formula (1): 1

Abstract: An organic electroluminescent device having the hole-transport layer in which the hole-transport material is dispersed in the resin binder having a glass transition temperature of not less than 170.degree. C.Since the above organic electroluminescent device has the hole-transport layer exhibiting sufficient durability and higher hole-transport property, it is excellent in luminous efficiency, luminance and stability.

Abstract: A tetrathiafulvalene derivative precursor represented by formula (1), a tetrathiafulvalene derivative represented by formula (6), and processes for producing the tetrathiafulvalene derivative precursor and the tetrathiafulvalene derivative: ##STR1## wherein R.sup.1 and R.sup.2 may be the same or different and represent organic groups that may be linked together to form a ring.

Abstract: The triazole derivatives of this invention are expressed by the general formula (1).The organic electroluminescent device of this invention have a layer containing at least one triazole derivative of the general formulas (1) and (2).Such triazole derivatives are excellent in electron-transport efficiency, hole-blocking properties and heat resistance, and such organic electroluminescent devices are excellent in luminous efficiency, luminance and stability. ##STR1## wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, R.sup.6, R.sup.7, R.sup.8, R.sup.9 and R.sup.10 have the same meanings as indicated in the specification.

Abstract: A stabilized carbon cluster conducting material comprising (i) a core comprising a conducting or superconducting carbon cluster and (ii) a sheath covering the core; a device comprising a substrate having thereon a film of a conducting or superconducting carbon cluster covered with a protective film capable of substantially preventing permeation of oxygen and water in the atmosphere; and processes for producing the stabilized carbon cluster conducting material and the device.

Abstract: A stabilized carbon cluster conducting material comprising (i) a core comprising a conducting or superconducting carbon cluster and (ii) a sheath covering the core; a device comprising a substrate having thereon a film of a conducting or superconducting carbon cluster covered with a protective film capable of substantially preventing permeation of oxygen and water in the atmosphere; and processes for producing the stabilized carbon cluster conducting material and the device.

Abstract: An organic charge transfer complex comprising an electron donor and an electron acceptor, the electron donor is at least one of bis(oxapropylenedithio)tetrathiafulvalene represented by formula (1): ##STR1## and bis(thiapropylenedithio)tetrathiafulvalene represented by formula (2): ##STR2##

Abstract: A stabilized carbon cluster conducting material comprising (i) a core comprising a conducting or superconducting carbon cluster and (ii) a sheath covering the core; a device comprising a substrate having thereon a film of a conducting or superconducting carbon cluster covered with a protective film capable of substantially preventing permeation of oxygen and water in the atmosphere; and processes for producing the stabilized carbon cluster conducting material and the device.

Abstract: A carbon cluster film has a precisely controlled stable electrical conductivity which does not deteriorate in a short period of time in air. Such a carbon cluster film having a stable electrical conductivity is formed by introducing an impurity into a thin film of fullerenes by ion implantation. The fullerenes include C.sub.60, C.sub.70 or the like.

Abstract: An organic superconductor comprising an electron donor and an electron acceptor and a process for producing the same, the organic superconductor being produced by performing an ultrasonic wave-assisted reaction between the electron donor and the electron acceptor as they are dissolved or dispersed in a solvent in a substantially oxygen-free reaction vessel.

Abstract: A carbon cluster film has a precisely controlled stable electrical conductivity which does not deteriorate in a short period of time in air. Such a carbon cluster film having a stable electrical conductivity is formed by introducing an impurity into a thin film of fullerenes by ion implantation. The fullerenes include C.sub.60, C.sub.70 or the like.

Abstract: An organic super-conductive material and a process for producing the same are disclosed, the material comprising a polymer having dispersed therein an organic super-conductive substance comprising an electron donor and an electron acceptor.

Abstract: An organic superconductive material and a process for producing the same are disclosed, the material comprising a polymer having dispersed therein an organic superconductive substance comprising an electron donor and an electron acceptor.

Abstract: An organic thin film and process for making the same, having electroconductivity, semiconductivity or superconductivity. The film is made of vapor-deposited bisethylenedithiatetrathiafulvalene (BEDT-TTF) by heating BEDT-TTF at a pressure of 10.sup.-2 Torr or below and at a temperature not higher than 260.degree. C. The temperature of the substrate on which the vapor is deposited is held at a lower temperature than the vapor. A thin film produced under these temperature and pressure conditions contains substantially no decomposition product. The electroconductivity of the film can be adjusted by selecting the substrate used for vapor-deposition of the film and the electron acceptor used as a dopant of the film. In order to achieve a vapor-deposited film with a high degree of orientation, silicon wafer is preferably used as a substrate for the film.

Abstract: A process for producing an organic electrical conductor comprising the steps of: (1) dissolving or dispersing an electron-donating material and an electron-accepting material in a solvent containing an alcohol; and (2) forming and growing crystals of the organic electrical conductor by subjecting the dissolved or dispersed materials of step (1) to electrochemical oxidation-reduction.

Abstract: A carbon film having a larger electrical conductivity is produced on a substrate by an ion beam method comprising steps of ionizing an organic compound having at least one substituent selected from the group consisting of a carbonyl group, an aldehyde group, an acyl group, an acid anhydride group, an amino group, a nitro group, a hydroxyl group, an alkoxyl group, a thiol group and a halogen or a cluster of said organic compound with an ion beam which accelerates ionized species towards a substrate by an electric field and forming a carbon film on the substrate.

Abstract: An optical waveguide for illumination comprising a core made of a transparent polymer having a glass transition temperature not higher than 50.degree. C. and a cladding made of a polymer having a lower refractive index than that of the core, which has good light transmission property and flexibility and is useful as an illumination element of an optical sensor.

Abstract: A carbon film having a large electrical conductivity is produced at a comparatively low substrate temperature by a method comprising forming the carbon film from a hydrocarbon by an ion beam method and heating the substrate at a temperature of 400.degree. C. to 1,200.degree. C.

Abstract: A plastic optical fiber comprising a core of a copolymer of an aryl methacrylate and an alkyl methacrylate and a cladding of a copolymer of vinylidene fluoride and a fluoroolefin provided on the core, the copolymer of the cladding having a melting point of at least 120.degree. C. and a fluoroolefin content of at least 3 mol %.