Phenanthroline derivative, electronic device containing same, light emitting element, and photoelectric conversion element

A phenanthroline derivative represented by the following general formula (1):

• wherein R1 to R8 may be the same or different, and are each selected from the group consisting of hydrogen, heavy hydrogen, an alkyl group, a cycloalkyl group, a heterocyclic group, an alkenyl group, a cycloalkenyl group, an alkynyl group, a halogen, a cyano group, a carbonyl group, a carboxyl group, an oxycarbonyl group, a carbamoyl group, an amino group, a boryl group, a silyl group and —P(═O)R9R10;
• R9 and R10 each represent an aryl group or a heteroaryl group, with the proviso that any one of R1 and R2 is a group represented by L1-B, and any one of R7 and R8 is a group represented by L2-C;
• R1 to R10 may be each substituted or unsubstituted;
• R1 to R8 has no phenanthroline skeleton;
• L1 and L2 may be the same or different, and are each selected from a single bond and a phenylene group;
• B represents a substituted or unsubstituted heteroaryl group having electron-accepting nitrogen, and C represents a substituted or unsubstituted aryl group having less than 20 ring-forming carbon atoms, with the proviso that B has no phenanthroline skeleton;
• substituents that B and C optionally have are each selected from the group consisting of heavy hydrogen, an alkyl group, a cycloalkyl group, a heterocyclic group, an alkenyl group, a cycloalkenyl group, an alkynyl group, an alkoxy group, an alkylthio group, an aryl ether group, an aryl thioether group, a halogen, a cyano group, a carbonyl group, a carboxyl group, an oxycarbonyl group, a carbamoyl group, an amino group, a boryl group, a silyl group, a phenyl group, a naphthyl group, a pyridyl group, a quinolinyl group, and —P(═O)R9R10;
• and these groups may be each substituted with heavy hydrogen, an alkyl group, a halogen, a phenyl group, a naphthyl group, a pyridyl group or a quinolinyl group.