Patent ID: 8372315

Claim:
A donor-acceptor (DA) π-conjugated polymer with high charge carrier mobility comprising: a plurality of D 1 k AD 1 k portions where k is 1 or 2, D 1 independently comprises a donor unit having at least one solubilizing side chain, wherein said D 1 comprises 3,4-dioxythiophene, 3,4-dioxypyrrole, 3,4-dioxyfuran, 3,4-dioxyselenophene, or 3,4-dioxytelurophene, 3,4-alkylenedioxythiophene, 3,4-alkylenedioxypyrrole, 3,4-alkylenedioxyfuran, 3,4-alkylenedioxyselenophene, or 3,4-alkylenedioxytelurophene, wherein said solubilizing side chain is attached to an oxy group or any carbon of said D 1 , and A comprises an acceptor unit; and a plurality of D 2 m spacer sequences situated between each of said D 1 k AD 1 k portions, where m is 1 to 6, D 2 independently comprises a second donor unit, wherein said second donor unit has a structure where all atoms of said second donor unit are coplanar in at least one conformation, wherein said D 2 comprises an aromatic or heteroaromatic unit, wherein said heteroaromatic unit comprises thiophene, pyrrole, furan, selenophene, telurophene, 3,4-dihyrdroxythiophene, 3,4-dihydroxypyrrole, 3,4-dihydroxyfuran, 3,4-dihydroxyselenophene, 3,4-dihydroxytelurophene, 3,4-diphenoxythiophene, 3,4-diphenoxypyrrole, 3,4-diphenoxyfuran, 3,4-diphenoxyselenophene, 3,4-diphenoxytelurophene, 3,4-diethenyloxythiophene, 3,4-diethenyloxypyrrole, 3,4-diethenyloxyfuran, 3,4-diethenyloxyselenophene, 3,4-diethenyloxytelurophene, 3,4-diformyloxythiophene, 3,4-diformyloxypyrrole, 3,4-diformyloxyfuran, 3,4-diformyloxyselenophene, 3,4-diformyloxytelurophene, 3,4-(1,2-vinylene)dioxythiophene, 3,4-(1,2-vinylene)dioxypyrrole, 3,4-(1,2-vinylene)dioxyfuran, 3,4-(1,2-vinylene)dioxyselenophene, 3,4-(1,2-vinylene)dioxytelurophene, 3,4-(1,2-phenylene)dioxythiophene, 3,4-(1,2-phenylene)dioxypyrrole, 3,4-(1,2-phenylene)dioxyfuran, 3,4-(1,2-phenylene)dioxyselenophene, 3,4-(1,2-phenylene)dioxytelurophene, 3,4-dicyanothiophene, 3,4-dicyanopyrrole, 3,4-dicyanofuran, 3,4-dicyanoselenophene, 3,4-dicyanotelurophene, 3,4-diaminothiophene, 3,4-diaminopyrrole, 3,4-diaminofuran, 3,4-diaminoselenophene, 3,4-diaminotelurophene, 3,4-dihalothiophene, 3,4-dihalopyrrole, 3,4-dihalofuran, 3,4-dihaloselephene, 3,4-dihalotelurophene, thiophene-3,4-dicarboxylic acid, furan-3,4-dicarboxylic acid, selenophene-3,4-dicarboxylic acid, telurophene-3,4-dicarboxylic acid, 3,4-dihalothiophene, 3,4-dihalopyrrole, 3,4-dihalofuran, 3,4-dihaloselenophene, or 3,4-dihalotelurophene, and wherein said DA π-conjugated polymer has a space-charge limited (SCL) zero field hole mobility of at least 1×10 −6 cm 2 V −1 s −1 .