Patent ID: 8426039

Claim:
A 9,10-bisphenylphenanthrene derivative, having a structure of formula (1) or (2): wherein P1 and P2 are substituted or non-substituted polycyclic aromatic hydrocarbons (PAH) selected from the group consisting of anthracene, benzo[a]pyrane, coronene, corannulene, tetracene, pentacene, phenanthrene, pyrene and ovalene, and R is a member selected from the group consisting of H, halo, cyano, trifluoromethyl, amino, C 1 -C 10 alkyl, C 2 -C 10 alkenyl, C 2 -C 10 alkynyl, C 3 -C 20 cycloalkyl, C 3 -C 20 cycloalkenyl, C 1 -C 20 heterocycloalkyl, C 1 -C 20 heterocycloalkenyl, aryl and heteroaryl.