MATERIALS FOR ELECTRONIC DEVICES

• US 20190322796A1
• Filed: 12/19/2017
• Published: 10/24/2019
• Est. Priority Date: 12/22/2016
• Status: Active Grant

• Current Assignee: Merck Patent GmbH (Merck & Co., Inc.)
• Original Assignee: Merck Patent GmbH (Merck & Co., Inc.)
• Inventors: Burkhart, Beate, Scheible, Katja Maria, Koenen, Nils, Heil, Holger
• Granted Patent: US 11,261,291 B2
• Time in Patent Office: Days
• CPC Class Codes: C08G 2261/12 Copolymers
• CPC Class Codes: C08G 2261/135 Cross-linked structures
• CPC Class Codes: C08G 2261/148 Side-chains having aromatic units
• CPC Class Codes: C08G 2261/19 partially conjugated
• CPC Class Codes: C08G 2261/312 Non-condensed aromatic systems, e.g. benzene
• CPC Class Codes: C08G 2261/314 Condensed aromatic systems, e.g. perylene, anthracene or pyrene
• CPC Class Codes: C08G 2261/3162 Arylamines
• CPC Class Codes: C08G 2261/3424 non-conjugated, e.g. paracyclophanes or xylenes
• CPC Class Codes: C08G 2261/411 Suzuki reactions
• CPC Class Codes: C08G 2261/512 Hole transport
• CPC Class Codes: C08G 2261/59 Stability
• CPC Class Codes: C08G 2261/76 crosslinking
• CPC Class Codes: C08G 2261/95 Use in organic luminescent diodes
• CPC Class Codes: C08G 61/12 Macromolecular compounds containing atoms other than carbon in the main chain of the macromolecule
• CPC Class Codes: C09D 165/00 Coating compositions based on macromolecular compounds obtained by reactions forming a carbon-to-carbon link in the main chain C09D107/00 - C09D157/00, C09D161/00 take precedence; Coating compositions based on derivatives of such polymers
• CPC Class Codes: H01B 1/128 comprising six-membered aromatic rings in the main chain, e.g. polyanilines, polyphenylenes
• CPC Class Codes: H10K 50/15 Hole transporting layers
• CPC Class Codes: H10K 85/111 comprising aromatic, heteroaromatic, or aryl chains, e.g. polyaniline, polyphenylene or polyphenylene vinylene
• CPC Class Codes: H10K 85/151 Copolymers
• CPC Class Codes: H10K 85/631 Amine compounds having at least two aryl rest on at least one amine-nitrogen atom, e.g. triphenylamine
• CPC Class Codes: H10K 85/6574 : comprising only oxygen in the heteroaromatic polycondensed ring system, e.g. cumarine dyes
• CPC Class Codes: Y02E 10/549 : Organic PV cells

Abstract

The present application relates to a polymer containing at least one structural unit of a formula (I) and at least one further structural unit selected from structural units A, B and C. The present application further relates to the use of the polymer in an electronic device and to a process for preparing the polymer. The present application further relates to an electronic device comprising the polymer.

Claims

1-22. -22. (canceled)

23. A polymer comprising at least one structural unit of formula (I):

24. The polymer of claim 23, wherein R⁴ is the same or different in each instance and is selected from the group consisting of aromatic ring systems having 6 to 20 aromatic ring atoms and optionally substituted by one or more R² groups.

25. The polymer of claim 23, wherein at least one group selected from the group consisting of Ar² and Ar⁴ groups contains exactly one or exactly two R⁴ groups in the ortho position to the nitrogen atom, wherein R⁴ is bonded to the Ar² and/or Ar⁴ group(s) directly or via a linker group X.

26. The polymer of claim 23, wherein the structural unit of formula (I) has a structure of one of formulae (I-1-A), (I-2-A-1), (I-2-A-2), or (I-2-A-3):

27. The polymer of claim 23, wherein the structural unit of formula (I) has a structure of one of formulae (I-1-B), (I-2-B-1), (I-2-B-2), or (I-2-B-3):

28. The polymer of claim 23, wherein the structural unit of formula (I) has a structure of one of formulae (I-1-A-A), (I-1-A-B), or (I-1-B-A):

29. The polymer of claim 23, wherein the structural unit A has a structure of formula (II-A):

30. The polymer of claim 23, wherein the structural unit B has a structure of formula (II-B):

31. The polymer of claim 23, wherein the sum total of the proportions of those structural units that correspond to a structural unit A, B or C in the polymer is between 20 and 75 mol %, based on 100 mol % of all copolymerized monomers present as structural units in the polymer.

32. The polymer of claim 23, wherein the sum total of the proportions of those structural units that correspond to a structural unit of the formula (I) in the polymer is between 10 and 60 mol %, based on 100 mol % of all copolymerized monomers present as structural units in the polymer.

33. The polymer of claim 23, wherein the polymer contains at least one structural unit having a crosslinkable group Q.

34. The polymer of claim 33, wherein the at least one structural unit having a crosslinkable group Q is a structural unit of formula (I), a structural unit A, a structural unit B, a structural unit C, or a structural unit selected from the group consisting of triarylamine, fluorene, indenofluorene, and spirobifluorene structural units.

35. The polymer of claim 33, wherein the proportion of structural units having a crosslinkable group Q in the polymer is in the range from 1 to 50 mol %, based on 100 mol % of all copolymerized monomers present as structural units in the polymer.

36. A polymer prepared by crosslinking the polymer of claim 33.

38. A mixture comprising at least one polymer of claim 23 and one or more further polymeric, oligomeric, dendritic, and/or low molecular weight substances.

39. A solution comprising one or more polymers of claim 23 and one or more solvents.

40. An electronic device comprising at least one polymer of claim 23.

41. The electronic device of claim 40, wherein the polymer is present in a layer selected from the group consisting of hole-transporting layers, hole injection layers, electron blocker layers, and emitting layers.

42. The electronic device of claim 40, wherein the electronic device comprises a blue-fluorescing emitting layer which has been applied from solution.

37. A mixture comprising at least one monomer of formula (M-I) and at least one monomer selected from the group consisting of monomers of formulae (M-II-A), (M-II-B), and (M-II-C):