Abstract: Using a charge transporting organic compound made of a polymer whose polymer main chain has a fluorene derivative, which is substituted with an amino group having an aromatic ring or heterocyclic ring, connected thereto at the 9 position thereof, e.g. a compound represented by the following formula (1), in a charge transporting thin film, the resulting organic EL element ensures low voltage drive, a high luminance, a very long life and no imperfections.

Abstract: A charge-transporting varnish comprising a phenylamino-N,N?-diphenylquinonediimine derivative represented by the formula (1) as a charge-transporting substance. It becomes possible to provide a charge-transporting varnish comprising an oxidized oligoaniline, which has a high solubility in various organic solvents and also has a good filtration property because the varnish has no aggregation property. (wherein R1 represents a hydrogen atom or a substituted or unsubstituted monovalent hydrocarbon group; and R2 to R19 independently represent a hydrogen atom, a hydroxyl group, an amino group, a silanol group, a thiol group, a carboxyl group, a phosphoric acid group, a phosphate ester group, an ester group, a thioester group, an amide group, a nitro group, a substituted or unsubstituted monovalent hydrocarbon group, an organooxy group, an organoamino group, an organosilyl group, an organothio group, an acyl group, a sulfone group or a halogen atom.

Abstract: Disclosed is an oligoaniline compound represented by the formula (1), (2), (3) or (4) below, which exhibits high solubility in a low-polarity solvent. This oligoaniline compound is suitable as a charge-transporting material which enables to realize excellent device characteristics such as low driving voltage when applied to an OLED device. (In the formulae, R1-R20 independently represent a hydrogen atom, a halogen atom, a hydroxy group, an amino group, a silanol group, a thiol group, a carboxyl group, a sulfonic acid group, a phosphate group, a phosphoric acid ester group, an ester group, a thioester group, an amide group, a nitro group, a monovalent hydrocarbon group, an organoxy group, an organoamino group, an organosilyl group, an organothio group, an acyl group or a sulfonic group; m, n, l and k independently represent an integer respectively satisfying 1?m?20, 1?n?20, 1?l?20 and 1?k?20; and X represents a fluorinated aryl group.

Abstract: Disclosed is a charge-transporting varnish containing a charge-transporting organic material, a good solvent, at least one poor solvent with high leveling properties, and at least one volatile poor solvent. The charge-transporting organic material is composed of a charge-transporting material consisting of a charge-transporting monomer or a charge-transporting oligomer having a number average molecular weight of 200 to 5000, or alternatively composed of such a charge-transporting material and an electron-accepting dopant material or a hole-accepting dopant material. This charge-transporting varnish enables to form a uniform and smooth charge-transporting thin film by a spray method or an ink jet method on an exposed electrode portion such as ITO or IZO of a substrate on which a structure of a simple or complicated pattern is formed beforehand.

Abstract: Disclosed herein are an organic conductive material and a conductive varnish containing it in an amount of 1 to 80 wt %. The organic conductive material comprises an oligoaniline derivative represented by the formula (1) in which quinoimine as an oxidant formed at the time of synthesis is reduced by a reducing agent and a salt is formed with an electron accepting dopant. (where R1 to R3 independently denote a hydrogen atom, unsubstituted or substituted monovalent hydrocarbon group, organoxy group, or acyl group; A and B independently denote a divalent group represented by the formula (2) or (3) below; where, R4 to R11 independently denote a hydrogen atom, hydroxyl group, unsubstituted or substituted monovalent hydrocarbon group, organoxy group, acyl group, or sulfonic group; and m and n independently denote a positive number equal to or larger than 1 such that m+n?20.

Abstract: An organic electroluminescence device capable of solving the problem of realization of low-voltage driving and high luminance which is important for the prolongation of the life thereof, the organic electroluminescence device comprising a luminous layer composed of a single or a plurality of organic compound thin films interposed between a positive electrode and a negative electrode, characterized in that at least one layer containing a compound having carbenium ion is arranged therein; and a charge transport material (e.g., hole transport material for the organic electroluminescence device) characterized in that a compound having carbenium ion is contained therein.

Abstract: A charge-transporting varnish is disclosed which comprises a charge-transporting material composed of an oligoaniline compound represented by the formula (1) below and at least one kind of solvent. In this charge-transporting varnish, the charge-transporting material is dissolved or homogeneously dispersed in the solvent. By using this varnish, a charge-transporting thin film having excellent conductive characteristics can be formed through a short-time firing.

Abstract: Oligoanilines of the general formula (1) exhibiting absorption coefficient (?) of 30 or below at 560 nm are obtained by dissolving a crude oligoaniline which contains an oligoaniline of the general formula (1) and oxides thereof and exhibits an absorption coefficient (?) of 80 to 1000 at 560 nm in a solvent to form an oligoaniline solution, treating the solution with 4 to 20% by mass of activated carbon based on the crude oligoaniline, and subjecting the resulting solution to recrystallization. According to the process, oligoanilines which little contain impurities and can exert electroluminescent characteristics with high reproducibility can be obtained. [wherein R1 to R3 are each independently hydrogen, hydroxyl, or the like; A and B are each independently a divalent group represented by the general formula (2) or (3), R4 to R11 are each independently hydrogen, hydroxyl, or the like; and m and n are each independently an integer of 1 or above and satisfy the relationship: m+n?20.

Abstract: An excellent EL device having low driving voltage, high luminous efficiency and long life can be obtained by using a charge-transporting thin film composed of a charge-transporting varnish which contains an arylsulfonic acid compound represented by the formula (1) or (2) below as an electron-acceptor material especially in an OLED device or a PLED device.

Abstract: A varnish comprising a ground substance consisting of a polymer or oligomer of 200 to 50?104 molecular weight or organic compound of 200 to 1000 molecular weight and a solvent containing a good solvent and a poor solvent whose boiling point (under 760 mmHg) is at least 20° C. lower than that of the good solvent, wherein the ground substance is dissolved in the solvent. Any thin film prepared from this varnish is substantially from generation of foreign matter, so that it can appropriately be used as thin films for electronic devices and those for use in other technical fields.

Abstract: By using a charge-transporting thin film which is made of charge-transporting varnish containing, as an electron-acceptor material, a 1,4-benzodioxane sulfonic acid compound represented by the formula (1) below especially in an OLED device or a PLED device, there can be realized excellent EL device characteristics such as low driving voltage, high luminous efficiency and long life.

Abstract: A charge-transporting organic material containing a compound with a 1,4-dithiin ring, which is represented by the following formula (1), is described. When using a thin film made of such an organic material in a low-molecular-weight organic EL (OLED) element and a polymer organic EL (PLED) element, EL element characteristics such as low drive voltage and high luminous efficiency can be improved. In addition, a charge-transporting varnish containing the compound with a 1,4-dithiin ring represented by the above formula (1) has good processing properties, and a thin film obtained therefrom has high charge-transporting characteristics and thus is effective for application to protective films for capacitor electrodes, antistatic films, solar cells or fuel cells.

Abstract: A charge-transporting varnish is disclosed which comprises a charge-transporting material composed of an oligoaniline compound represented by the formula (1) below and at least one kind of solvent. In this charge-transporting varnish, the charge-transporting material is dissolved or homogeneously dispersed in the solvent. By using this varnish, a charge-transporting thin film having excellent conductive characteristics can be formed through a short-time firing. In particular, when the varnish is applied to an OLED element or a PLED element, the resulting element can achieve excellent element characteristics such as low driving voltage, high luminous efficiency and long life.

Abstract: A varnish containing a charge-transporting organic material and a solvent is used as a charge-transporting varnish. The charge-transporting organic material is composed of a charge-transporting substance comprising a charge-transporting monomer, or charge-transporting oligomer or polymer having a number average molecular weight of 200 to 500,000, or is composed of such a charge-transporting substance and an electron- or hole-accepting dopant substance. The solvent contains at least one type of high-viscosity solvent having a viscosity of 10 to 200 mPa·s at 20° C. The charge-transporting substance or the charge-transporting organic material is dissolved or uniformly dispersed in the solvent. The varnish has a high uniform film forming capability even in a system using a charge-transporting substance of low molecular weight and a charge-accepting dopant substance.

Abstract: An organic electroluminescence device capable of solving the problem of realization of low-voltage driving and high luminance which is important for the prolongation of the life thereof, the organic electroluminescence device comprising a luminous layer composed of a single or a plurality of organic compound thin films interposed between a positive electrode and a negative electrode, characterized in that at least one layer containing a compound having carbenium ion is arranged therein; and a charge transport material (e.g., hole transport material for the organic electroluminescence device) characterized in that a compound having carbenium ion is contained therein.

Abstract: Disclosed herein are an organic conductive material and a conductive varnish containing it in an amount of 1 to 80 wt %. The organic conductive material comprises an oligoaniline derivative represented by the formula (1) in which quinoimine as an oxidant formed at the time of synthesis is reduced by a reducing agent and a salt is formed with an electron accepting dopant. (where R1 to R3 independently denote a hydrogen atom, unsubstituted or substituted monovalent hydrocarbon group, organoxy group, or acyl group; A and B independently denote a divalent group represented by the formula (2) or (3) below; where, R4 to R11 independently denote a hydrogen atom, hydroxyl group, unsubstituted or substituted monovalent hydrocarbon group, organoxy group, acyl group, or sulfonic group; and m and n independently denote a positive number equal to or larger than 1 such that m+n?20.