Patent ID: 9394406
Filing Date: 2016-07-19
CPC Classification: C08G,C08L,C09K,H01L,H05B,Y02E

Claim Text:
1. A copolymer comprising structural units of general formula (I) and an aromatic structural unit selected from the group consisting of 4,5-dihydropyrene derivatives, 4,5,9,10-tetrahydropyrene derivatives, fluorene derivatives, 9,9′-spirobifluorene derivatives, phenanthrene derivatives, 9,10-dihydrophenanthrene derivatives, 5,7-dihydrodibenzoxepine derivatives and cis- and trans-indenofluorene derivatives, wherein: X and Y are on each occurrence independently selected from naphthyl, anthracenyl, phenanthrenyl, dihydrophenanthrenyl, biphenyl, terphenyl, fluorenyl, spirobifluorenyl, cis- or trans-indenofluorenyl, truxenyl, isotruxenyl, spirotruxenyl, spiroisotruxenyl, carbazolyl, pyridinyl, quinolinyl, or isoquinolinyl, wherein one or more H atoms are optionally replaced by R, and wherein one of the two groups X or Y is optionally R; R is identically or differently on each occurrence D, F, Cl, Br, I, N(Ar 1 ) 2 , C(═O)Ar 1 , P(═O)Ar 1 2 , S(═O)Ar 1 , S(═O) 2 Ar 1 , CR 1 ═CR 1 Ar 1 , CN, NO 2 , Si(R 1 ) 3 , B(OR 1 ) 2 , OSO 2 R 1 , a straight-chain alkyl, alkoxy or thioalkoxy group having 1 to 40 C atoms, or a branched or cyclic alkyl, alkoxy or thioalkoxy group having 3 to 40 C atoms, each of which is optionally substituted by one or more radicals R 1 , wherein one or more non-adjacent CH 2 groups is optionally replaced by R 1 C═CR 1 , C≡C, Si(R 1 ) 2 , Ge(R 1 ) 2 , Sn(R 1 ) 2 , C═O, C═S, C═Se, C═NR 1 , P(═O)(R 1 ), SO, SO 2 , NR 1 , O, S, or CONR 1 , and wherein one or more H atoms is optionally replaced by F, Cl, Br, I, CN, or NO 2 ; Ar 1 is identically or differently on each occurrence an aryl or heteroaryl group or an aromatic or heteroaromatic ring system; and R 1 is identically or differently on each occurrence H, an aliphatic hydrocarbon radical having 1 to 20 C atoms, or an aromatic hydrocarbon radical having 6 to 20 C atoms; wherein the H atom present in each case in one or both of the thiophene rings is optionally replaced by R; and wherein the dashed lines, represent the bonds to the adjacent structural units in the copolymer.