Patent ID: 7488834

Claim:
A molecule having the following formula: wherein each of R 1 and R 2 includes a branched alkyl group having 5 to 20 carbon atoms and an ether moiety; wherein each of R 1 and R 2 is linked by the ether moiety to one of the benzene rings; and wherein the molecule is a member selected from a group consisting of: 5,5′-bis(4-(4-methylpentyloxy)phenyl)-2,2′-bithiophene; 5,5′-bis(4-(3,7-dimethyloctyloxy)phenyl)-2,2′-bithiophene; 5,5′-bis(4-(3S,7-dimethyloctyloxy)phenyl)-2,2′-bithiophene; 5,5′-bis(4-(2-ethylbutyloxy)phenyl)-2,2′-bithiophene; 5,5′-bis(4-(2-methylhexyloxy)phenyl)-2,2′-bithiophene; 5,5′-bis(4-(2-ethylhexyloxy)phenyl)-2,2′-bithiophene; 5,5′-bis(4-(1-methylhexyloxy)phenyl)-2,2′-bithiophene; 5,5′-Bis-[4-(1-ethyl-hexyloxy)-phenyl]-[2,2′]bithiophenyl; 5,5′-Bis-[4-(2-methyl-propoxy-tetrahydro-pyran)-phenoxy]-[2,2′]bithiophenyl; 3-(4-{5′-[4-(3-Hydroxy-2-methyl-propoxy)-phenyl]-[2,2′]bithiophenyl-5-yl}-phenoxy) -2-methyl-propan-1-ol; 6-[4-(5′-{4-[5-(1-Vinyl-allyloxycarbonyl)-pentyloxy]-phenyl}-[2,2′]bithiophenyl-5-yl)-phenoxy]-hexanoic acid 1-vinyl-allyl ester; and 5,5′-Bis-{4-[6-(tert-butyl-diphenyl-silanyloxy)-hexyloxy]-phenyl}-[2,2′]bithiophenyl.