Organic semiconducting polymers

摘要

The invention relates to novel organic semiconducting polymers containing one or more monomers derived from s-indacene fused symmetrically on each terminus with dithieno[3,2-b;2′,3′-d]thiophene (IDDTT), cyclopenta[2,1-b;3,4-b′]dithiophene (IDCDT), or derivatives thereof, 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 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 ten or more repeating units of formula I wherein W1 and W2 are independently of each other C(R1R2), C═C(R1R2), Si(R1R2) or C═O, X1 and X2 are independently of each other S, C(R3R4), Si(R3R4), C═C(R3R4) or C═O, one of T1 and T2 is S and the other is CH, R1-4 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(O)—O—, —O—C(O)—, —O—C(O)—O—, —CF2—, —NR0—, —SiR0R00—, —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, Y1 and Y2 are independently of each other H, F, Cl or CN, and R0 and R00 are independently of each other H or optionally substituted C1-40 carbyl or hydrocarbyl, and one or more units of formula II
—[(Ar1)a—(U)b—(Ar2)c—(Ar3)d]—  II wherein U is a unit of formula I Ar1, Ar2, Ar3 are, on each occurrence identically or differently, and independently of each other, aryl or heteroaryl that is different from U, and is optionally substituted, RS is on each occurrence identically or differently F, Br, Cl, —CN, —NC, —NCO, —NCS, —OCN, —SCN, —C(O)NR0R00, —C(O)X0, —C(O)R0, —NH2, —NR0R00, —SH, —SR0, —SO3H, —SO2R0, —OH, —NO2, —CF3, —SF5, optionally substituted silyl, carbyl or hydrocarbyl with 1 to 40 C atoms that is optionally substituted and optionally comprises one or more hetero atoms, or P-Sp-, R0 and R00 are independently of each other H or optionally substituted C1-40 carbyl or hydrocarbyl, P is a polymerizable or crosslinkable group, Sp is a spacer group or a single bond, X0 is halogen, a, b, c are on each occurrence identically or differently 0, 1 or 2, with the proviso that b=d=1 and a=c=0, or a=b=c=d=1, or a=b=d=1 and c=0, or a=b=c=1 and d=0, or a=c=2, b=1 and d=0, or a=c=2 and b=d=1.