Patent ID: 7799875

Claim:
A conjugated polymer or dendrimer comprising one or more units of formula (1) wherein Ar 1 is, identically or differently on each occurrence, mono- or polycyclic aryl or heteroaryl optionally mono- or polysubstituted by R 1 ; Ar 2 is, identically or differently on each occurrence, mono- or polycyclic aryl or heteroaryl optionally mono- or polysubstituted by R 2 ; Ar 3 is, identically or differently on each occurrence, mono- or polycyclic aryl or heteroaryl optionally mono- or polysubstituted by R 3 ; Ar 4 is, identically or differently on each occurrence, mono- or polycyclic aryl or heteroaryl optionally mono- or polysubstituted by R 4 ; Y is, identically or differently on each occurrence, H, F, Cl, or a carbon or hydrocarbon radical having up to 40 C atoms, wherein two radicals Y, or one radical Y and an adjacent radical R 1 , R 4 , Ar 1 , or Ar 4 , optionally define an aliphatic or aromatic, mono- or polycyclic ring system; R 1 , R 2 , R 3 , and R 4 are, identically or differently on each occurrence, H, F, Cl, OH, CN, N(R) 2 , Si(R) 3 , B(R) 2 , or a carbon or hydrocarbon radical having up to 40 C atoms, wherein two or more of the radicals R 1 , R 2 , R 3 , and R 4 optionally define an aliphatic or aromatic, mono- or polycyclic ring system, and wherein R 1 , R 2 , and R 3 are optionally a covalent link in said polymer or dendrimer; R is, identically or differently on each occurrence, H or a straight-chain, branched or cyclic alkyl having up to 22 C atoms, wherein one or more non-adjacent CH 2 groups are optionally replaced by —C(R 0 )═C(R 0 )—, —C═C—, —N(R 0 —, —Si(R 0 ) 2 —, —O—, —S—, —CO—, —CO—O—, —O—CO—, —O—CO—O—, —S—CO—, —CO—S—, with the proviso that O and/or S atoms are not linked directly to one another, and wherein one or more H atoms are optionally replaced by F, Cl, CN, or aryl having 5 to 40 C atoms, wherein one or more C atoms may be replaced by O, S or N, where these groups are optionally substituted by one or more non-aromatic radicals R 1 ; and wherein a plurality of radicals R, or radicals R with further radicals R 1 , R 2 , R 3 , and R 4 optionally define an aromatic or aliphatic, mono- or polycyclic ring system; R 0 is, identically or differently on each occurrence, H or an aliphatic or aromatic hydrocarbon radical having up to 20 C atoms; a is, identically or differently on each occurrence, 1, 2, or 3; b is, identically or differently on each occurrence, 1, 2, or 3; c is, identically or differently on each occurrence, 0 or 1.