Patent ID: 7271406

Claim:
A compound comprising an aromatic core and two end capping groups conjugated to the aromatic core, said compound having Formula IV: wherein each Ar 1 is independently a radical of benzene, naphthalene, anthracene, phenanthrene, 9,10-dihydrophenanthrene, 4,5,9,10-tetrahydropyrene, fluorene, 9-silafluorene, 6,12-dihydroindeno[1,2-b]fluorene, 5,12-dihydro-6H-indeno[1,2-b]phenanthrene, 5,6,12,13-tetrahydrodibenzo[a,h]anthracene, 2-phenyl-9H-fluorene, or acenaphthene that is unsubstituted or substituted with one or more groups selected from alkyl, alkenyl, alkoxy, fluoro, fluoroalkyl, perfluoroalkyl, heteroalkyl, and combinations thereof, wherein when Ar 1 is a radical of benzene, the group is selected from each a is independently 1 or 2; each E y is independently a structure of Formula II or Formula III: each X is independently O, S, or NR 1 , where R 1 is alkyl, aryl, heteroaryl, heteroalkyl, or combinations thereof; each Ar 2 is independently an aryl group that is unsubstituted or substituted with one or more groups selected from alkyl, alkenyl, alkoxy, aryl, aryloxy, fluoro, fluoroalkyl, perfluoroalkyl, heteroalkyl, alkyl oxadiazolyl, aryl oxadiazolyl, alkyl triazolyl, aryl triazolyl, diarylamino, aryldiarylamino, and combinations thereof; each asterisk (-*) indicates the location of a bond to another group in the compound; and each end capping group (EC) is independently an aryl, heteroaryl without a —C═N— unit, or tertiary amino aryl group that is unsubstituted or substituted with one or more groups selected from alkyl, alkenyl, alkoxy, aryl, aryloxy, fluoro, fluoroalkyl, perfluoroalkyl, heteroalkyl, heteroaryl without a —C═N— unit, and combinations thereof, wherein said end capping groups are conjugated to the aromatic core.