| 摘要 |
The invention relates to novel conjugated polymers containing one or more repearting units derived from indacenodibenzothiophene or dithia-dicyclopenta-dibenzothiophene, to methods for their preparation and educts or intermediates used therein, to polymer blends, mixtures and formulations containing them, to the use of the polymers, polymer blends, mixtures and formulations as organic semiconductors in organic electronic (OE) devices, especially in organic photovoltaic (OPV) devices, and to OE and OPV devices comprising these polymers, polymer blends, mixtures or formulations. |
| 主权项 |
1. A polymer comprising one or more units of formula I wherein X1 and X2 independently of each other denote C(R1R2), Si(R1R2), C═C(R1R2) or C═O, A1 and A2 independently of each other denote a mono- or bicyclic aromatic or heteroaromatic group having from 5 to 12 ring atoms and optionally being substituted, R1 and R2 independently of each other denote H, straight-chain, branched or cyclic alkyl with 1 to 30 C atoms, in which one or more non-adjacent CH2 groups are optionally replaced by —O—, —S—, —C(O)—, —C(S)—, —C(O)—O—, —O—C(O)—, —NR0—, —SiR0R00—, —CF2—, —CHR0═CR00—, —CY1═CY2— or —C≡C— in such a manner that O and/or S atoms are not linked directly to one another, and in which one or more H atoms are optionally replaced by F, Cl, Br, I or CN, or denote aryl, heteroaryl, aryloxy or heteroaryloxy with 4 to 20 ring atoms which is optionally substituted, preferably by halogen or by one or more of the aforementioned alkyl or cyclic alkyl groups, Y1 and Y2 are independently of each other H, F, CI or CN, R0 and R00 are independently of each other H or optionally substituted C1-40 carbyl or hydrocarbyl, and preferably denote H or alkyl with 1 to 12 C-atoms. |
