Conjugated polymers
AssigneeMerck Patent GmbH
InventorsAmy Phillips, Nicolas Blouin, William Mitchell, Steven Tierney
Life of this patent
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Abstract
The invention relates to novel polymers containing one or more 3,7-dialkyl-benzo[1,2-b:4,5-b′]dithiophene repeating units, methods for their preparation and monomers used therein, blends, mixtures and formulations containing them, the use of the polymers, blends, mixtures and formulations as semiconductor in organic electronic (OE) devices, especially in organic photovoltaic (OPV) devices, and to OE and OPV devices comprising these polymers, blends, mixtures or formulations.
Claims17
Conjugated polymer comprising repeating units of formula I1 and repeating units of formula I2
- —(Ar1)a—B— I1
- —(Ar2)b-A- I2
- wherein
- B is a divalent group of the following formula
- A is a divalent group of the following formula
- X is O, Se, Te, NR0 or S,
- R1, R2 denote independently of each other, and on each occurrence identically or differently, straight-chain, branched or cyclic alkyl with 1 to 30 C atoms, preferably with 1 to 20 C atoms,
- R3, R4 denote independently of each other, and on each occurrence identically or differently, H, F, or straight-chain or branched alkyl or alkoxy with 1 to 30 C atoms, preferably with 1 to 20 C atoms,
- Ar1, Ar2 are, on each occurrence identically or differently, and independently of each other, aryl or heteroaryl that is different from B and A, preferably has 5 to 30 ring atoms, and is optionally substituted by one or more groups RS,
- 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,
- R0, R00 are independently of each other H or optionally substituted C1-40 carbyl or hydrocarbyl,
- X0 is halogen, and
- a, b are on each occurrence identically or differently 1, 2 or 3.
Monomer of formula VI
- R5—(Ar1)c—B—(Ar2)d—R6 IV
- wherein
- B is a divalent group of the following formula
- R1, R2 denote independently of each other, and on each occurrence identically or differently, straight-chain, branched or cyclic alkyl with 1 to 30 C atoms, preferably with 1 to 20 C atoms,
- Ar1, Ar2 are, on each occurrence identically or differently, and independently of each other, aryl or heteroaryl that is different from B, preferably has 5 to 30 ring atoms, and is optionally substituted by one or more groups RS,
- 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,
- R0, R00 are independently of each other H or optionally substituted C1-40 carbyl or hydrocarbyl,
- c and d are independently of each other 0, 1, 2 or 3,
- R5 and R6 are selected from Cl, Br, I, O-tosylate, O-triflate, O-mesylate, O-nonaflate, —SiMe2F, —SiMeF2, —O—SO2Z1, —B(OZ2)2, —CZ3═C(Z3)2, —C≡CH, —C≡CSi(Z1)3, —ZnX0 and —Sn(Z4)3,
- X0 is halogen, preferably Cl, Br or I, and
- Z1-4 are selected from the group consisting of alkyl and aryl, each being optionally substituted, and two groups Z2 may also form a cyclic group.
Dependencies are inferred from the claim text.