Abstract: An electrophotographic photoconductor is disclosed, which comprises an electroconductive support and a photoconductive layer formed thereon comprising a bisazo pigment having the formula (I) serving as a charge generating material: ##STR1## wherein Ar represents a residual group of a coupler represented by ArH selected from the group consisting of: an aromatic hydrocarbon compound having a hydroxyl group, a heterocyclic compound having a hydroxyl group, an aromatic hydrocarbon compound having an amino group, a heterocyclic compound having an amino group, an aromatic hydrocarbon compound having a hydroxyl group and an amino group, a heterocyclic compound having a hydroxyl group and an amino group, an aliphatic compound having an enolic ketone group, and an aromatic hydrocarbon compound having an enolic ketone group. Further, charge generating materials and novel bisazo pigments for use in the electrophotographic photoconductor are disclosed.

Abstract: A pyrenylamine derivative having an unsaturated bond of formula (I), which can be employed as an organic photoconductive material for use in electrophotography: ##STR1## wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, W, l, m, n j and k are specifically defined the specification, an aldehyde compound of formula (II), which is an intermediate for preparing the pyrenylamine derivative: ##STR2## and methods of producing the pyrenylamine derivative and the aldehyde compound are disclosed.

Abstract: An electrophotographic photoconductor is composed of an electroconductive substrate and a photoconductive layer formed thereon including a m-phenylenediamine derivative of formula (I): ##STR1## wherein Ar represents a non-condensed polycyclic hydrocarbon group other than a phenyl group, or a condensed polycyclic hydrocarbon group having not more than 18 carbon atoms; and R.sup.1, R.sup.2, R.sup.3 and R.sup.4 each represent hydrogen a halogen atom a cyano group, a nitro group, an alkyl group, an alkoxyl group, an aryl group, an aryloxy group, an alkylmercapto group, a group represented by ##STR2## in which R.sup.6 and R.sup.7 each represent hydrogen, an alkyl group, or an aryl group, an alkylenedioxy group or an alkylenedithio group. Novel m-phenylenediamine derivatives for use in the electrophotoconductor and intermediates for producing the m-phenylenediamine derivatives, and methods of those derivatives are disclosed.

Abstract: An electrophotographic photoconductor comprising an electroconductive support and a photoconductive layer formed thereon comprising as an effective component at least one polyether compound represented by formula (I): ##STR1## wherein Ar represents a phenylene group or a biphenylene group; R.sup.1 and R.sup.2 each represent an alkyl group which may have a substituent, or an aryl group which may have a substituent; and n is an integer of 1 to 4. Furthermore, charge transporting material comprising the above polyether compound, polyether compounds having formula (II) for use in the electrophotographic photoconductor and a method of preparing the same are disclosed, ##STR2## wherein m is an integer of 1 or 2.

Abstract: An electrophotographic photoconductor is composed of an electroconductive substrate and a photoconductive layer formed thereon including a diamine compound of formula (I): ##STR1## wherein R.sup.1 represents an alkyl group having 1 to 4 carbon atoms, or an aryl group; R.sup.2 represents hydrogen, an alkyl group having 1 to 4 carbon atoms, or an alkoxyl group having 1 to 4 carbon atoms; n is an integer of 1 to 3; and ##STR2## represents an arylene group or a bivalent group of a heterocyclic compound. A diamine compound for use in the electrophotographic photoconductor is also disclosed.

Abstract: Charge transporting materials having general formula (I): ##STR1## R.sup.1 represents hydrogen; an unsubstituted or substituted alkyl group; an alkoxyl group having 1 to 4 carbon atoms; a thioalkoxyl group having 1 to 4 carbon atoms; an aryloxy group; an aralkyl group; a nitro group; an unsubstituted or substituted aryl group; a halogen; an amino group; an unsubstituted or substituted dialkylamino group; R.sup.2 represents hydrogen; an unsubstituted or substituted alkyl group; an alkoxyl group having 1 to 4 carbon atoms; or a halogen; R.sup.3 represents hydrogen; an alkyl group having 1 to 4 carbon atoms; an alkoxyl group having 1 to 4 carbon atoms; a halogen; a dialkylamino group; an amino group; a thioalkoxyl group having 1 to 4 carbon atoms; an aryloxy group; a methylenedioxy group; an aralkyl group; or an unsubstituted or substituted aryl group; R.sup.

Abstract: An electrophotographic photoconductor is composed of an electroconductive support and a photoconductive layer formed thereon comprising a novel pyrene-ring-containing olefin compound having formula [I]: ##STR1## wherein R.sup.1 and R.sup.2 each represent hydrogen or an alkyl group which may have a substituent; Y is an aliphatic hydrocarbon group which may have a substituent, a cyclic hydrocarbon group which may have a substituent, or an aromatic group which may have a substituent; n is an integer of 0 or 1, and m is an integer of 1 to 3, provided that when n is 0, m is 1, R.sup.1 is hydrogen, and Y is an aromatic group with a substituent ##STR2## R.sup.5 and R.sup.3 each represent hydrogen, and Y and R.sup.1 may be bonded to form a ring, a method of synthesizing the pyrene-ring-containing olefin compound and an intermediate therefor are disclosed.

Abstract: A charge transporting material comprising a 1,3-pentadiene derivative having formula I):A--CH.dbd.CH--CH.dbd.CH--CH.sub.2 --A (I)wherein A represents a 9-anthryl group which may have a substituent, a N-substituted carbazolyl group which may have a substitutent, a N-substituted- phenothiazinyl group which may have a substituent or ##STR1## in which Ar represents an arylene group which may have a substituent, R.sup.1 and R.sup.2 each represent an alkyl group which may have a substituent, an aralkyl group which may have a substituent, or an aryl group which may have a substituent; an electrophotographic photoconductor comprising an electroconductive support and a photoconductive layer formed thereon, which comprises as an effective component at least one of the 1,3-pentadiene derivatives of the above formula (I); and novel 1,3-pentadiene derivatives of the formula (I), provided that in the formula I), R.sup.1 and R.sup.2 cannot be a methyl group at the same time, are disclosed.

Abstract: Polyolefin derivatives, which are useful not only as the photoconductive materials for electrophotography, but also as a charge transporting material employed in a function-separating type photoconductor which uses an organic or inorganic pigment as a charge generating material, and an electrophotographic photoconductor containing at least one of the above polyolefin derivatives in a photoconductive layer thereof, are disclosed.

Abstract: Aromatic diolefinic compounds including 1,4-divinylbenzene derivatives, which are useful not only as organic photoconductive materials for electrophotography, but also as intermediates for producing diethyl aromatic compounds which are also useful as organic photoconductive materials for electrophotography, the aromatic diethyl compounds, an electrophotographic photoconductor containing any of the above aromatic diethyl compounds in a photosensitive layer thereof, and a charge transporting medium containing any of the aromatic diethyl compound are disclosed.

Abstract: An electrophotographic photoconductor comprising an electroconductive support and a photoconductive layer formed thereon comprising as an effective component at least one polyether compound represented by formula (I): ##STR1## wherein Ar represents a phenylene group or a biphenylene group; R.sup.1 and R.sup.2 each represent an alkyl group which may have a substituent, or an aryl group which may have a substituent; and n is an integer of 1 to 4. Furthermore, charge transporting material comprising the above polyether compound, polyether compounds having formula (II) for use in the electrophotographic photoconductor and a method of preparing the same are disclosed, ##STR2## wherein m is an integer of 1 or 2.

Abstract: [2,2]paracyclophane compounds having formula (I): ##STR1## wherein R.sup.1 and R.sup.2 independently represent an alkyl group having 1 to 4 carbon atoms, which may have a substituent, or an aryl group which may have a substituent, provided that R.sup.1 and R.sup.2 may not be a methyl group at the same time, and methods of producing the same are disclosed. These compounds are useful as an effective photoconductive component for an electrophotographic photoconductor which is composed of an electroconductive support and a photoconductive layer formed thereon.

Abstract: An electrophotographic photoconductor comprising an electroconductive support, and a photoconductive layer formed thereon comprising at least one tertiary amine compound having a condensed polycyclic hydrocarbon group of formula (I): ##STR1## wherein A.sup.1 and A.sup.2 each independently represent an unsubstituted or substituted alkyl group or aryl group, and Ar represents an unsubstituted or substituted condensed polycyclic hydrocarbon group. Furthermore, novel tertiary amine compounds having a condensed polycyclic hydrocarbon group are disclosed.

Abstract: A charge transporting material comprising a 1,3-pentadiene derivative having formula (I):A--CH.dbd.CH--CH.dbd.CH--CH.sub.2 --A (I)wherein A represents a 9-anthryl group which may have a substituent, a N-substituted carbazolyl group which may have a substituent, a N-substituted phenothiazinyl group which may have a substituent or ##STR1## in which Ar represents an arylene group which may have a substituent, R.sup.1 and R.sup.2 each represent an alkyl group which may have a substituent, an aralkyl group which may have a substituent, or an aryl group which may have a substituent; an electrophotographic photoconductor comprising an electroconductive support and a photoconductive layer formed thereon, which comprises as an effective component at least one of the 1,3-pentadiene derivatives of the above formula (I); and novel 1,3-pentadiene derivatives of the formula (I), provided that in the formula (I), R.sup.1 and R.sup.2 cannot be a methyl group at the same time, are disclosed.

Abstract: An electrophotographic photoconductor comprising an electroconductive support and a photoconductive layer formed thereon comprising as an effective component at least one polyether compound represented by formula (I): ##STR1## wherein Ar represents a phenylene group or a biphenylene group; R.sup.1 and R.sup.2 each represent an alkyl group which may have a substituent, or an aryl group which may have a substituent; and n is an integer of 1 to 4. Furthermore, charge transporting material comprising the above polyether compound, polyether compounds having formula (II) for use in the electrophotographic photoconductor and a method of preparing the same are disclosed, ##STR2## wherein m is an integer of 1 or 2.

Abstract: Aromatic diolefinic compounds including 1,4-divinylbenzene derivatives, which are useful not only as organic photoconductive materials for electrophotography, but also as intermediates for producing diethyl aromatic compounds which are also useful as organic photoconductive materials for electrophotography, the aromatic diethyl compounds, an electrophotographic photoconductor containing any of the above aromatic diethyl compounds in a photosensitive layer thereof, and a charge transporting medium containing any of the aromatic diethyl compound are disclosed.

Abstract: Disclosed herein is an electroluminescent device comprising an anode and a cathode and one or plurality of organic compound layer sandwiched therebetween, at least one of the organic compound layers being composed of an organic compound represented by the general formula (I): ##STR1## (wherein A.sup.1 and A.sup.2 each represents a substituted or unsubstituted alkyl group, or a substituted or unsubstituted aryl group which may be identical or different with each other, Ar represents a substituted or unsubstituted pyrenyl group and n represents 1 or 2).

Abstract: An electrophotographic photoconductor is disclosed, which comprises an electroconductive support and a photoconductive layer formed thereon comprising as an effective component at least one [2,2]paracyclophane compound formula (I): ##STR1## wherein R.sup.1 and R.sup.2 independently represent an alkyl group having 1 to 4 carbon atoms, which may have a substituent, or an aryl group which may have a substituent; R.sup.3 and R.sup.4 each represent hydrogen, an alkyl group having 1 to 4 carbon atoms, an alkoxyl group having 1 to 4 carbon atoms, or a halogen; and m is an integer of 1 to 3, and n is an integer of 1 to 4, and R.sup.3 and R.sup.4 may be the same or different when m and n are both 2 or more. Furthermore, novel [2,2]paracyclophane compounds for use in the electrophotographic photoconductor and methods of producing the same are disclosed.

Abstract: An electrophotographic photoconductor comprises an electroconductive support and a photoconductive layer formed thereon comprising a bisazo compound having the formula (I) serving as a charge generating material: ##STR1## wherein Y represents a halogen, an alkyl group which may have a substituent, an alkoxyl group, an acyl group, a substituted amino group, a cyano group or a nitro group; R represents hydrogen, or an alkyl group which may have a substitutent; and Ar represents an aryl group which may have a substituent.

Abstract: A bisazo compound of the general formula: ##STR1## where Ar is selected from the group consisting of substituents (a) .about. (i), a dinitro compound, a diamino compound, and a tetrazonium salt, which respectively serve as a starting material, a first intermediate and a second intermediate for producing the above bisazo compound are prepared, and an electrophotographic photoconductor comprising an electroconductive support having thereon a photoconductive layer containing any of the above bisazo compounds is disclosed.