Abstract: The present invention provides a metal paste composition which can obtain the calcined bodies having low volume resistivity in a wiring substrate after calcining. More specifically, the present invention provides a metal paste composition comprising a metal, an aliphatic polycarbonate, and an organic solvent.

Abstract: The present invention provides a fullerene derivative having an electron donating group adjacent to the fullerene nucleus, represented by formula (I) which exhibits a high LUMO energy and a high open circuit voltage based thereon and which is highly compatible with polymers and excellent in charge mobility and charge separation ability: wherein the encircled FL represents fullerene C60 or C70, Donor-Sub represents a substituent having at least one electron donating substituent atom located at a position apart from the fullerene nucleus by two bonds, R is hydrogen, Donor-Sub, an alkyl, cycloalkyl, alkoxy, alkoxy-substituted alkyl, alkoxy-substituted alkoxy, alkylthio-substituted alkoxy, alkylthio, alkylthio-substituted alkylthio, or alkoxy-substituted alkylthio group, having a total carbon atoms of 1 or more and 20 or fewer, or a benzyl or phenyl group, and n is an integer of 1 to 10.

Abstract: The present invention provides a novel methanofullerene derivative applicable as an organic semiconductor material in electronics devices such as organic FETs and electroluminescence devices and solar cells, represented by formula (I) wherein the average value of 13C-NMR chemical shift values of carbons C2 and C2? on FL, bonded to C1 is 80.10 ppm or greater, wherein FL represents fullerenes, X1 and X2 are each an aromatic hydrocarbon, an alkyl group or the like, C2 and C2? are carbon atoms on FL, bonded to C1, and n is an integer of 1 to 10.

Abstract: The present invention provides a fullerene derivative having an electron donating group adjacent to the fullerene nucleus, represented by formula (I) which exhibits a high LUMO energy and a high open circuit voltage based thereon and which is highly compatible with polymers and excellent in charge mobility and charge separation ability: wherein the encircled FL represents fullerene C60 or C70, Donor-Sub represents a substituent having at least one electron donating substituent atom located at a position apart from the fullerene nucleus by two bonds, R is hydrogen, Donor-Sub, an alkyl, cycloalkyl, alkoxy, alkoxy-substituted alkyl, alkoxy-substituted alkoxy, alkylthio-substituted alkoxy, alkylthio, alkylthio-substituted alkylthio, or alkoxy-substituted alkylthio group, having a total carbon atoms of 1 or more and 20 or fewer, or a benzyl or phenyl group, and n is an integer of 1 to 10.

Abstract: The present invention provides a metal paste composition which can obtain the calcined bodies having low volume resistivity in a wiring substrate after calcining. More specifically, the present invention provides a metal paste composition comprising a metal, an aliphatic polycarbonate, and an organic solvent.

Abstract: The present invention provides a novel methanofullerene derivative applicable as an organic semiconductor material in electronics devices such as organic FETs and electroluminescence devices and solar cells, represented by formula (I) wherein the average value of 13C-NMR chemical shift values of carbons C2 and C2? on FL, bonded to C1 is 80.10 ppm or greater, wherein FL represents fullerenes, X1 and X2 are each an aromatic hydrocarbon, an alkyl group or the like, C2 and C2? are carbon atoms on FL, bonded to C1, and n is an integer of 1 to 10.

Abstract: The present invention relates to a photosensitive member containing a specific bisazo compound described by general structural formula[I] and formed on an electrically conductive substrate; ##STR1## Wherein X is a hydrogen atom, halogen atom, alkyl radical, alkoxi radical, nitro radical or cyano radical; A is a diatomic radical selected from among the following: ##STR2## B is a coupler described by formulae [II] through [VI]; ##STR3## R is a hydrogen atom, halogen atom, alkyl radical, alkoxi radical, nitro radical or cyano radical; and Y is an aromatic carbocyclic residue or aromatic heterocyclic residue, each of which may have a substituent; G is a carbamoyl radical or sulfamoyl radical and may have a substituent; R.sub.1 is a hydrogen atom, alkyl radical, amino radical or carbamoyl radical, each of which may have a substituent, a carboxyl radical or cyano radical; M is an aryl group which may have a substituent, which is improved in photosensitivity and dispersibility.

Abstract: The present invention uses an azo pigment having in the center of an N-oxide heterocyclic structure as a photoelectrical charge-generating material. The pigments are excellent in dispersion stability in a dispersed solution, and enable the provision of a photosensitive member excellent in sensitivity properties.