Patent ID: 8642189

Claim:
A substituted bipyridyl compound represented by the following general formula (1): (wherein R˜ to R7 may be the same or different, each representing a hydrogen atom, a fluorine atom, a chlorine atom, a cyano group, a trifluoromethyl group, a linear or branched alkyl group having from 1 to 6 carbon atoms, a substituted or unsubstituted aromatic hydrocarbon group, a substituted or unsubstituted aromatic heterocyclic group, or a substituted or unsubstituted condensed polycyclic aromatic group; n indicates an integer of from 2 to 4; A represents a di- to tetra-valent group of any of an acenaphthenyl group, or a trivalent group represented by the following general formula (2): (wherein X, Y and Z each represents a carbon atom.