Patent ID: 8313671

Claim:
A heterocyclic compound represented by the following formula (1): wherein X 1 , X 2 and X 3 each independently represent a sulfur atom or a selenium atom; R 1 to R 6 each independently represent an aromatic hydrocarbon group selected from the group consisting of a substituted or unsubstituted phenyl group, a substituted or unsubstituted naphthyl group, a substituted or unsubstituted anthryl group, a substituted or unsubstituted phenanthryl group, a substituted or unsubstituted pyrenyl group, a substituted or unsubstituted benzopyrenyl group, a substituted or unsubstituted condensed polycyclic hydrocarbon group, a substituted or unsubstituted heterocyclic hydrocarbon group selected from the group consisting of a substituted or unsubstituted pyridyl group, a substituted or unsubstituted pyrazyl group, a substituted or unsubstituted pyrimidyl group, a substituted or unsubstituted quinolyl group, a substituted or unsubstituted isoquinolyl group, a substituted or unsubstituted pyrrolyl group, a substituted or unsubstituted indolenyl group, a substituted or unsubstituted imidazolyl group, a substituted or unsubstituted carbazolyl group, a substituted or unsubstituted furyl group, a substituted or unsubstituted pyranyl group and a substituted or unsubstituted pyridonyl group, and a condensed heterocyclic hydrocarbon group; an aliphatic hydrocarbon group, a halogen atom, a hydroxyl group, an alkoxyl group, a mercapto group, an alkylthio group, a boronic acid group, a nitro group, a substituted amino group, an amide group, an acyl group, a carboxyl group, an acyloxy group, a cyano group, a sulfo group, a sulfamoyl group, an alkylsulfamoyl group, a carbamoyl group, an alkylcarbamoyl group or a hydrogen atom, provided that they do not simultaneously represent a hydrogen atom.