A member of the class of phenanthrolines that is 1,10-phenanthroline bearing two phenyl substituents at positions 4 and 7. ChEBI: 4,7-diphenyl-1,10-phenanthroline is a member of the class of phenanthrolines that is 1,10-phenanthroline bearing two phenyl substituents at positions 4 and 7. It has a role as a chelator. It is a member of phenanthrolines and a member of benzenes.