| 摘要 |
The invention relates to novel conjugated polymers containing one or more repeating 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 organic photodetectors (OPD), and to OE, OPV and OPD 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), C═C(R1R2), Si(R1R2) or C═O, A1 is wherein the thiophene ring may also be substituted in 3-position by a group R1, ′ A2 is wherein the thiophene ring may also be substituted in 3-position by a group R1, B is 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 independently of each other denote H, F, Cl or CN, R0 and R00 independently of each other denote H or optionally substituted C1-40 carbyl or hydrocarbyl, and preferably denote H or alkyl with 1 to 12 C-atoms. |
