Patent ID: 9695274
Date: 2017-07-04
CPC Classifications: C07F,C08G,C08L,C09K,H01B,H01L,H05B,Y02E

Claim:
1. A polymer containing one or more structural units of the formula (Ib) or IIc), where R R the dashed lines represent the bonds to the adjacent structural units and wherein (i) the proportion of the structural units of the formula (I) in the polymer is 30 to 60 mol %; (ii) the polymer contains 0.5 to 50 mol % of units which improve the charge transport and/or charge injection and said units are (iv) units which have hole-injection and/or hole-transport properties and/or (v) units which have electron-injection and/or electron-transport properties; and (iii) the polymer contains units which are used as a polymer backbone; wherein (iv) the units which have hole-injection and/or hole-transport properties are selected from the group consisting of triarylamine, benzidine, tetraaryl-para-phenylenediamine, triarylphosphine, phenothiazine, phenoxazine, dihydrophenazine, thianthrene, dibenzo-para-dioxin, phenoxathiyne, carbazole, azulene, thiophene, pyrrole and furan derivatives; (v) the units which have electron-injection and/or electron-transport properties are selected from the group consisting of pyridine, pyrimidine, pyridazine, pyrazine, oxadiazole, quinoline, quinoxaline, anthracene, benzanthracene, pyrene, benzimidazole, triazine, ketone, phosphine oxide and phenazine derivatives, and (vi) the units which are used as the polymer backbone are 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.