Abstract: To provide an amine compound, represented by General Formula (I) below: [In General Formula (I), R1 and R2 represent a substituted or unsubstituted alkyl group, a substituted or unsubstituted aralkyl group, or a substituted or unsubstituted aromatic hydrocarbon group, which may be identical or different; m and n are an integer of 1 or 0; Ar1 represents a substituted or unsubstituted aromatic hydrocarbon group; Ar2 and Ar3 represent a substituted or unsubstituted alkyl group, a substituted or unsubstituted aralkyl group, or a substituted or unsubstituted aromatic hydrocarbon group; and Ar1 and Ar2 or Ar2 and Ar3 may bind to each other to form a substituted or unsubstituted heterocyclic group including a nitrogen atom.

Abstract: Provided are a polycarbonate copolymer, comprising: a repeating unit A represented by the following general formula (1); a repeating unit B represented by the following general formula (2); and a repeating unit C represented by the following general formula (3), in which: the polycarbonate copolymer has a presence ratio represented by Ar1/(Ar1+Ar2+Ar3) of from 50 to 65 mol %, a presence ratio represented by Ar2/(Ar1+Ar2+Ar3) of from 25 to 45 mol %, and a presence ratio represented by Ar3/(Ar1+Ar2+Ar3) of from 3 to 25 mol %; and the repeating units B are not directly bonded to each other, and a coating liquid and an electrophotographic photosensitive body each obtained by using the copolymer, and as a result, provided are a polycarbonate copolymer remarkably improved in abrasion resistance while maintaining its stable solubility in an organic solvent, and a coating liquid and an electrophotographic photosensitive body each obtained by using the copolymer: in the formulae, Ar1, Ar2, and Ar3 each independent

Abstract: An object is to provide an intermediate transfer belt and a method for producing the same which inhibits fine toner dots in white area in an environment of low temperature and low humidity and further, inhibits roughness of image with long-term use. An intermediate transfer belt for an electrophotographic image forming apparatus comprising a polyimide having a dispersed conductive filler, wherein the polyimide contains a unit structure represented by Formula (1); wherein X represents a group selected from Formulas (a) to (e), n, m, l each represents 0 or 1, and at least one of m and l is 1, wherein p in Formula (c) and q in Formula (e) each is an integer of 1 to 5.

Abstract: An electrophotographic photosensitive member having a surface layer that contains a polymer produced by the polymerization of a compound having a chain-polymerizable functional group. The compound having a chain-polymerizable functional group is a compound represented by the formula (1).

Abstract: An object is to provide an intermediate transfer belt and a method for producing the same which inhibits fine toner dots in white area in an environment of low temperature and low humidity and further, inhibits roughness of image with long-term use. An intermediate transfer belt for an electrophotographic image forming apparatus comprising a polyimide having a dispersed conductive filler, wherein the polyimide contains a unit structure represented by Formula (1); wherein X represents a group selected from Formulas (a) to (e), n, m, l each represents 0 or 1, and at least one of m and l is 1, wherein p in Formula (c) and q in Formula (e) each is an integer of 1 to 5.

Abstract: The present invention provides a single-layer electrophotographic photoreceptor provided with a single-layer photosensitive layer that adapts to an exposing source emitting a laser beam with wavelengths of from 400 nm to 450 nm inclusive and is laminated on a conductive substrate, the single-layer photosensitive layer comprising: an enamine-type compound that functions as both a charge generation material and a charge transport material and is represented by the following general formula (1); and a perylene-type compound that functions as both an electron-transport material and a sensitizer and is represented by the following general formula (2):

Abstract: There provides an electrophotographic photoreceptor using a novel amine compound which has an excellent effect of ozone resistance and can be used for providing an electrophotographic photoreceptor having no adverse effect on other characteristics, and an image forming apparatus including the photoreceptor. The aim is attained by an electrophotographic photoreceptor formed by stacking a single layer type photosensitive layer containing a charge generating material and a charge transporting material, or a layered photosensitive layer, in which a charge generation layer containing a charge generating material and a charge transporting layer containing a charge transporting material are stacked in this order, on a conductive substrate made of a conductive material, wherein the single layer type photosensitive layer or the charge transporting layer of the layered photosensitive layer contains a specific amine compound.

Abstract: Compositions capable of simultaneous two-photon absorption and higher order absorptivities are provided. Compounds having a donor-pi-donor or acceptor-pi-acceptor structure are of particular interest, where the donor is an electron donating group, acceptor is an electron accepting group, and pi is a pi bridge linking the donor and/or acceptor groups. The pi bridge may additionally be substituted with electron donating or withdrawing groups to alter the absorptive wavelength of the structure. Also disclosed are methods of generating an excited state of such compounds through optical stimulation with light using simultaneous absorption of photons of energies individually insufficient to achieve an excited state of the compound, but capable of doing so upon simultaneous absorption of two or more such photons. Applications employing such methods are also provided, including controlled polymerization achieved through focusing of the light source(s) used.

Abstract: Provided are charge-transporting varnishes that can form satisfactory thin films and can provide organic EL elements that can exhibit excellent emission efficiency and luminance characteristics when used for EL elements that have a structure on a substrate. The charge-transporting varnishes comprise quinone diimine derivatives represented by general formula (1) that are oligoaniline derivatives or oxides thereof, electron-accepting dopant substances or hole-accepting dopant substances, and at least one kind of silane compound. [In the formula, R1, R2 and R3 each independently represents a hydrogen atom, a halogen atom, a hydroxyl group, etc. A and B each independently represents a divalent group represented by general formula (2) or (3). (In the formulas, R4-R11 each independently represents a hydrogen atom, a halogen atom, a hydroxyl group, etc.) m and n are each independently integers of 1 or greater and satisfy m+n?20.

Abstract: A preferred aspect of an electrophotographic photoconductor of the present invention contains a layer containing a hardened material which is prepared by polymerizing (A) a chain-polymerizable group-containing tertiary amine compound in which at least one alkyl group is bound to a nitrogen atom constituting an amine structure through chain polymerization. Another preferred aspect of the electrophotographic photoconductor contains a layer containing a hardened material which is prepared by polymerizing the (A) component, and (B) a chain-polymerizable charge transporting compound through chain polymerization. Still another preferred aspect of the electrophotographic photoconductor contains a layer containing a hardened material which is prepared by polymerizing the (A) component, (B) the chain-polymerizable charge transporting compound, and (C) a trifunctional or more chain-polymerizable compound through chain polymerization.

Abstract: An electrophotographic photoreceptor including a photosensitive layer which includes a titanyl phthalocyanine crystal having a major absorption peak at a wavelength of 780 nm±10 nm and a minor absorption peak having an intensity of ¾ or less of the major absorption peak at 690 nm±10 nm in the visible-infrared absorption spectrum and a distyryl compound having a predetermined structure. An electrophotographic image forming apparatus employing the electrophotographic photoreceptor is also provided. The electrophotographic photoreceptor and the electrophotographic image forming apparatus have good photosensitivity and charging properties and good stability over repeated charging obtained by using an optimum combination of a new crystal type of a highly photosensitive titanyl phthalocyanine and a distyryl compound which is a charge transporting material that is compatible with the titanyl phthalocyanine.

Abstract: It is an object of the present invention to provide a wet-developing electrophotographic photoconductor which can be manufactured stably by making use of particular physical property indexes of an electron transport agent and a binding resin and possesses the excellent durability and the excellent solvent resistance and a wet-developing image forming device which uses such a wet-developing electrophotographic photoconductor. To achieve such an object, in a wet-developing electrophotographic photoconductor which forms a photosensitive layer containing at least a charge generating agent, an electron transport agent, a hole transport agent and a binding resin on an electrically conductive base body thereof and a wet-developing image forming device which uses the wet-developing electrophotographic photoconductor, an inorganic value/organic value (I/O value) of the electron transport agent is set to 0.60 or more and an inorganic value/organic value (I/O value) of the binding resin is set to 0.

Abstract: The present invention provides a single layer type electrophotographic photoconductor which exhibits the small number of generated black spots in a formed image and exhibits the excellent sensitivity characteristic even when the photoconductor is used for a long time or a photoconductor drum is rotated at a high speed and an image display device which includes the single layer type electrophotographic photoconductor. In the single layer type electrophotographic photoconductor which includes a photoconductive layer containing a binding resin, a hole transporting agent and an charge generating agent, the photoconductor contains a water-repellant polycarbonate resin as the binding resin, and a contact angle of pure water (measured temperature: 25° C.) with respect to the photoconductive layer is set to 100° or more.

Abstract: The present invention provides a novel naphthol derivative represented by the following general formula (I). The novel naphthol derivative of the present invention is useful as a positively electrifiable charge control agent. The present invention further provides an electrophotographic toner comprising a charge control agent comprising the novel naphthol derivative represented by formula (I).

Abstract: Improved organophotoreceptor comprises an electrically conductive substrate and a photoconductive element on the electrically conductive substrate, the photoconductive element comprising: (a) a charge transport material having the formula where Ar is an aryl group; X comprises a bond or a linking group; R1, R2, and R3 each comprise H, a carboxyl, an amino group, a halogen, an alkyl group, an acyl group, an alkoxy group, an alkylsulfanyl group, an alkenyl group, an alkynyl group, a heterocyclic group, an aromatic group, or a part of a ring group; R4 comprises H, an alkyl group, an alkenyl group, an alkynyl group, an aromatic group, or a heterocyclic group; and R5, R6, R7, and R8 each comprise an alkyl group, an alkenyl group, an alkynyl group, an aromatic group, a heterocyclic group, or a part of a ring group; and (b) a charge generating compound. Corresponding electrophotographic apparatuses and imaging methods are described.

Abstract: An electrophotographic photoreceptor is provided that in excellent in the electrical characteristics such as the charging property, the sensitivity and the responsiveness, the oxidizing gas resistance such as the ozone resistance and the nitrogen oxide resistance, and the electrical durability such that even after repetition use the foregoing excellent electrical characteristics are not deteriorated. A photosensitive layer of an electrophotographic photoreceptor contains an amine compound represented by the general formula (1).

Abstract: An improved organophotoreceptor comprises an electrically conductive substrate and a photoconductive element on the electrically conductive substrate, the photoconductive element comprising: (a) a charge transport material having the formula where X1 and X2 are, each independently, a linking group; Ar comprises an aromatic group; R1, R2, and R3 comprise, each independently, H, an alkyl group, an alkenyl group, an alkynyl group, an aromatic group, or a heterocyclic group; and n is a distribution of integers between 1 and 100,000 with an average value of greater than one; and (b) a charge generating compound. Corresponding electrophotographic apparatuses, imaging methods, and methods of forming the charge transport material are described.

Abstract: Improved organophotoreceptor comprises an electrically conductive substrate and a photoconductive element on the electrically conductive substrate, the photoconductive element comprising: (a) a charge transport material having the formula, where R comprises a hydrogen, an alkyl group, an alkenyl group, a heterocyclic group, or an aromatic group; X comprises an arylamine group; and Y comprises a 9-fluorenylidene group having at least a solubilizing substituent; and (b) a charge generating compound. Corresponding electrophotographic apparatuses and imaging methods are described.

Abstract: An improved organophotoreceptor comprises an electrically conductive substrate and a photoconductive element on the electrically conductive substrate, the photoconductive element comprising: (a) a charge transport material having the formula where X comprises a linking group; R1 and R1? comprise, each independently, H, an alkyl group, an alkenyl group, an alkynyl group, an aromatic group, or a heterocyclic group; and R2, R3, R2?, and R3? comprise, each independently, an arylamine group; and (b) a charge generating compound. Corresponding electrophotographic apparatuses, imaging methods, and methods of forming the charge transport material are described.

Abstract: A charge transport layer for an imaging member comprising a charge transport material with a nitrogen molecular defense system not exhibiting early onset of charge transport layer fatigue cracking. The nitrogen molecular defense system includes attaching bulky organic groups to charge transport materials. The bulky groups aid in preventing recrystallization of the charge transport molecule and shield the nitrogen from molecular attack, such as by oxidation. The charge transport layer exhibits excellent wear resistance, excellent electrical performance, and outstanding print quality.

Abstract: A composition comprised of a charge transport compound and a crosslinked polymer composition generated from the curing of a solution of a hydroxyl pendant polycarbonate, a hydroxylated charge transport compound, a curing agent and a solvent.

Abstract: A charge transport layer composition for a photoreceptor includes at least a binder and a charge transport material of about 100% to about 40% by weight of a total of the charge transport layer N,N-dimethylphenyl)-4-biphenylamine and about 0% to about 60% N,N?-dephenyl-N,N?-bis(3-methylphenyl)-(1,1?-biphenyl)-4,4?-diamine, and wherein the total charge transport material in the composition is 48% or less of the total solids of the composition. The charge transport layer forms a layer of a photoreceptor, which also includes an optional anti-curl layer, a substrate, an optional hole blocking layer, an optional adhesive layer, a charge generating layer, and optionally one or more overcoat or protective layers.

Abstract: Improved organophotoreceptor comprises an electrically conductive substrate and a photoconductive element on the electrically conductive substrate, the photoconductive element comprising: (a) a charge transport compound having the formula where R1 and R2 are, independently, hydrogen, an alkyl group, an alkaryl group or an aryl group; X is an aromatic group; Y is an (N,N-disubstituted)arylamine; Z is (CH2)m group where m is an integer between 0 and 30 where one or more of the methylene groups is optionally replaced by O, S, C?O, O?C—O, O?C—NR3, sulfoxide, sulfate, phosphate, an aryl group, urethane, urea, NR4 group, CHR5 group, or CR6R7 group where R3, R4, R5, R6, and R7 are, independently, H, hydroxyl, thiol, an amine group, an alkyl group, an alkaryl group, a heterocyclic group, or an aryl group, and E is a bond, O, S, C?O, NR8, CR9R10 group, a hetrocyclic group, or an aromatic group where R8, R9, and R10 are, independently, H, an alkyl group, an alkaryl group, or an aryl group; and (b) a charg

Abstract: Improved organophotoreceptor comprises an electrically conductive substrate and a photoconductive element on the electrically conductive substrate, the photoconductive element comprising: (a) a charge transport material having the formula where R1, R2, R3, and R4 are, independently, an alkyl group, an alkaryl group, an aryl group, or a part of a cyclic group; R5 is hydrogen, an alkyl group, an alkaryl group, an aryl group, or a heterocyclic group; X comprises an aromatic group, such as an aryl group or an aromatic heterocyclic group; Y is a linking group; and Z comprises an epoxy group; and (b) a charge generating compound. Corresponding electrophotographic apparatuses and imaging methods are described.

Abstract: Improved organophotoreceptor comprises an electrically conductive substrate and a photoconductive element on the electrically conductive substrate, the photoconductive element comprising: (a) a charge transport material having the formula where R1, R2, R3, R4, R5, R6, R7, and R8, are, each independently, an alkyl group, an alkenyl group, an alkynyl group, an aryl group, or a heterocyclic group; R9 and R10 are, each independently, H, an alkyl group, an alkenyl group, an alkynyl group, an aryl group, or a heterocyclic group; Ar1 and Ar2 are, each independently, an aromatic group; Y is an arylamine group; and X1 and X2 are, each independently, a linking group; and (b) a charge generating compound. Corresponding electrophotographic apparatuses and imaging methods are described.

Abstract: Improved organophotoreceptor comprises an electrically conductive substrate and a photoconductive element on the electrically conductive substrate, the photoconductive element comprising: (a) a charge transport material having the formula where R1, R2, R3, R4, R5, R6, R7, and R8 are, each independently, an alkyl group, an alkaryl group, an aryl group, or heterocyclic group, X and X? are, each independently, aromatic groups, and Z is a divalent linking group; and (b) a charge generating compound. Corresponding electrophotographic apparatuses and imaging methods are described.

Abstract: Improved organophotoreceptor comprises an electrically conductive substrate and a photoconductive element on the electrically conductive substrate, the photoconductive element comprising: (a) a charge transport material having the formula where R1, R2, R3, and R4 comprise, each independently, an alkyl group, an alkenyl group, an aromatic group, a heterocyclic group, or a part of a ring group; X and X? comprise, each independently, an aromatic group; Y and Y? comprise, each independently, a (disubstituted)methylene group; and Z is a linking group; (b) a charge generating compound; and (c) an electrically conductive substrate on which said charge transport material and said charge generating compound are located. Corresponding electrophotographic apparatuses and imaging methods are also described.

Abstract: An electrophotographic photoreceptor including an electroconductive substrate and a photosensitive layer on the electroconductive substrate, wherein the photosensitive layer includes at least a compound having a substituted or unsubstituted alkylamino group and a charge transport material, and wherein an oxidation potential (Eox1) of the substituted or unsubstituted alkylamino group and an oxidation potential (Eox2) of the charge transport material satisfy the following relationship (I): Eox1?Eox2??0.2.

Abstract: An organophotoreceptor comprises an electrically conductive substrate and photoconductive element on the electrically conductive substrate, the photoconductive element having a) a charge transport composition with the formula where Y1 and Y2 are, each independently, an arylamine group; X1 and X2 are, each independently, a linking group; R1 and R2 are, each independently, a hydrogen, an alkyl group, an alkenyl group, a heterocyclic group, an aromatic group; Z is a bridging group; and n is a distribution of integers between 1 and 100,000 with an average value greater than 1; and (b) a charge generating compound. Corresponding electrophotographic apparatuses and imaging methods are described.

Abstract: An organic optoelectronic device includes a solution coatable thin film having a hole transporting material, an electron transporting material, and a photogenerating component uniformly dispersed therein. The thin film is about 0.2 microns or less, and can be spin-coated onto a substrate and further coated with electrodes.

Abstract: An electrophotographic photoconductor having at least a photosensitive layer on a conductive support, wherein the electrophotographic photoconductor comprising, in the outermost layer thereof: a filler, an organic compound having an acid value of 10–400 mgKOH/g, and at least one of compounds represented by the following general formulas 1 and 2: where R1, R2 are substituted or unsubstituted alkyl groups or aromatic hydrocarbon rings, and may be identical or different. R1, R2 may also be bonded together to form a substituted or unsubstituted heterocycle containing a nitrogen atom. R3, R4, R5 are substituted or unsubstituted alkyl or alkoxy groups, or halogen atoms. Ar is a substituted or unsubstituted aromatic hydrocarbon ring or aromatic heterocycle. n is an integer in the range 2 to 4, and k, l, m are respectively integers in the range 0 to 3. X is an oxygen atom, or a sulfur atom.

Abstract: Improved organophotoreceptor comprises an electrically conductive substrate and a photoconductive element on the electrically conductive substrate, the photoconductive element comprising: (a) a charge transport material having the formula where R1 and R2 are, independently, H, an alkyl group, an alkaryl group, or an aryl group; X is a linking group having the formula —(CH2)m—, branched or linear, where m is an integer between 1 and 20, inclusive, and one or more of the methylene groups is optionally replaced by O, S, C?O, O?S?O, a heterocyclic group, an aromatic group, urethane, urea, an ester group, a NR3 group, a CHR4 group, or a CR5R6 group where R3, R4, R5, and R6 are, independently, H, hydroxyl group, thiol group, an alkyl group, an alkyl group, a heterocyclic group, or an aryl group; V comprises a vinyl ether group; and Z comprises an (N,N-disubstituted)arylamine group, such as a carbazole group, a julolidine group, or a p-(N,N-disubstituted)arylamine group; and (b) a charge generating compound.

Abstract: The present invention relates to an electrophotographic photosensitive member having a support and provided thereon a photosensitive layer. The photosensitive layer contains a high-molecular weight charge-transporting material having a specific repeating structural unit. The high-molecular weight charge-transporting material has a weight-average molecular weight Mw of 1,500 or more and an energy level of highest occupied molecular orbital, EHOMO, of from ?8.3 eV or more to ?8.0 eV or less as found by semiempirical molecular-orbital calculation. The present invention also relates to a process cartridge and an electrophotographic apparatus which have such an electrophotographic photosensitive member.

Abstract: This invention relates to a novel organophotoreceptor that includes a photoconductive layer having a) a novel charge transport compound having the formula ?where R1 is a carbazole group, a julolidine group, or a p-(N,N-disubstituted)arylamine, R2, R3, R4, R5 and R6 are, independently, an alkyl group or an aryl group, R7 and R8 are, independently, hydrogen, an alkyl group, or an aryl group, X is oxygen, sulfur, or a NR? group where R? is hydrogen, an alkyl, or an aryl group, and Y is a trivalent aryl group; (b) a charge generating compound; and wherein the at least one photoconductive layer is carried on an electrically conductive substrate.

Abstract: Improved organophotoreceptor comprises an electrically conductive substrate and a photoconductive element on the electrically conductive substrate, the photoconductive element comprising: (a) a charge transport material having the formula where R1, R2, R3, and R4 are, independently, an alkyl group, an alkaryl group, or an acyl group; Y is an alkyl group, alkaryl group, or aryl group; X is a linking group having the formula —(CH2)m—, branched or linear, where in is an integer between 1 and 20, inclusive, and one or more of the methylene groups is optionally replaced by O, S, C?O, O?S?O, a heterocyclic group, an aromatic group, urethane, urea, an ester group, a NR3 group, a CHR4 group, or a CR5R6 group where R3, R4, R,5 and R6 are, independently, H, hydroxyl group, thiol group, an alkyl group, an alkaryl group, a heterocyclic group, or an aryl group; and E is an epoxy group; and (b) a charge generating compound.

Abstract: Improved organophotoreceptor comprises an electrically conductive substrate and a photoconductive element on the electrically conductive substrate, the photoconductive element comprising:

Abstract: This invention relates to a novel organophotoreceptor that includes:

Abstract: An electrophotographic photoreceptor including an electroconductive substrate and a photosensitive layer on the electroconductive substrate, wherein the photosensitive layer includes at least a compound having a substituted or unsubstituted alkylamino group and a charge transport material, and wherein an oxidation potential (Eox1) of the substituted or unsubstituted alkylamino group and an oxidation potential (Eox2) of the charge transport material satisfy the following relationship (I):

Abstract: Improved organophotoreceptor comprises an electrically conductive substrate and a photoconductive element on the electrically conductive substrate, the photoconductive element comprising:

Abstract: An organic optoelectronic device includes a solution coatable thin film having a hole transporting material, an electron transporting material, and a photogenerating component uniformly dispersed therein. The thin film is about 0.2 microns or less, and can be spin-coated onto a substrate and further coated with electrodes.

Abstract: This invention relates to a novel organophotoreceptor that includes a photoconductive layer having

Abstract: An improved organophotoreceptor comprises an electrically conductive substrate and a photoconductive element on the electrically conductive substrate wherein the photoconductive element has

Abstract: A single layered electrophotographic photoreceptor includes a photosensitive layer having at least a charge generating material, a hole transporting material, an electron transporting material, and a binder on a conductive support. The photosensitive layer includes a peculiar charge transfer complex (CT-complex) formed by the hole transporting material and the electron transporting material.

Abstract: A component containing a supporting substrate, and thereover a layer comprised of a alkylimido-monobenzamidazole-perinone-perylene or a bisalkylimido-perinone-perylene of the alternative following formulas wherein each of R1, R2 and R3 are, for example, independently alkyl or aryl.

Abstract: Disclosed are a novel organic photoconductive material suitable as a charge-transporting material in a photosensitive layer of an electrophotographic photoreceptor or usable in various display devices, and an electrophotographic photoreceptor which uses the above organic photoconductive material in a photosensitive layer and which exhibits a high charge potential and high sensitivity and also exhibits little or almost no change in various properties in repeated use and can exhibit stabilized performances.

Abstract: A material for a light emitting device which is a compound represented by the following formula (I): wherein Ar1 and Ar6, which are the same or different, each represents a divalent aryl group or a divalent heterocyclic group; R2, R3, R7 and R8, which are the same or different, each represents an aryl group, a heterocyclic group or an aliphatic hydrocarbon group; R4a, R5a, R9a and R10a, which are the same or different, each represents a hydrogen atom or a monovalent group, and at least one of R4a, R5a, R9a and R10a represents an electron withdrawing group having a Hammett's &sgr;p value of 0.

Abstract: A biphenyl derivative is included in a photosensitive layer of an electrophotographic photoconductor. The electrophotographic photoconductor includes a single-layer photosensitive layer coated on a conductive substrate. The photosensitive layer includes a resin binder, a charge generation substance, a hole transport substance, and an electron transport substance. An electrophotographic apparatus using such an electrophotographic photoconductor has excellent electrical characteristics in a positive chargine system and is stable in repeated use.

Abstract: Disclosed is an electrophotosensitive material comprising a conductive substrate and a photosensitive layer formed on the substrate, the photosensitive layer containing a quinone derivative of the formula (1) and/or (2): 1

Abstract: Aryldiamine charge transporting molecules for a charge transport layer of an imaging member have a higher mobility by increasing the number of phenyl groups between the nitrogen atoms of the aryldiamine.

Abstract: To provide compounds, which are suitable for use as an organic luminescent material capable of developing intense luminescence which is yellow to red, and a process for preparing in general and high efficiency. A bis(aminostyryl)benzene compound of the following general formula [I] is provided wherein R2 and R3 independently represent an unsubstituted aryl group, and R1 and R4 independently represent an aryl group, and R5 to R8, independently represent a cyano group or the like. A process for the preparation thereof is described wherein a 4-(N,N-diarylamino)benzaldehyde and a diphosphonic acid ester or diphosphonium are subjected to condensation reaction. Intermediates of the bis(aminostyryl)benzene compound are also described.