| 摘要 |
The invention relates to novel conjugated polymers containing one or more thieno[3,2-b]thiophene based polycyclic repeating units, 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 R1 and R2 independently of each other denote aryl or heteroaryl that is substituted with one or more groups selected from halogen, CN and straight-chain, branched or cyclic alkyl with 1 to 30 C atoms, in which one or more CH2 groups, which are not in α-position to the aryl or heteroaryl group, 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, Y1 and Y2 are independently of each other H, F, Cl 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. |
