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US 12,466,947 B2Granted
Copolymer, electroluminescence device material including copolymer, and electroluminescence device
AssigneeSamsung Electronics Co., Ltd.
InventorsMasashi Tsuji, Fumiaki Kato, Naotoshi Suganuma, Takahiro Fujiyama, Yusaku Konishi, Dae Young Chung, Ha Il Kwon, Soonmin Cha, Tae Ho Kim
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Abstract
A copolymer including a structural unit represented by Chemical Formula 1 wherein the copolymer is capable of improving luminous efficiency and durability, particularly, an improvement in luminescence life-span, of an electroluminescence device, particularly a quantum dot electroluminescence device.
Claims18
A copolymer comprising a structural unit represented by Chemical Formula 1:
- wherein, in Chemical Formula 1,
- X is a single bond, -L1a-, or -L1b-L1c-, wherein Lia, Lib, and Lie are each independently a substituted or unsubstituted divalent aromatic hydrocarbon group having 6 to 25 carbon atoms,
- L2 is a substituted or unsubstituted aromatic hydrocarbon group having 6 to 25 carbon atoms, or a substituted or unsubstituted aromatic heterocyclic group having 3 to 25 ring-member atoms,
- Ar1 and Ar2 are each independently a substituted or unsubstituted aromatic hydrocarbon group having 6 to 25 carbon atoms, or a substituted or unsubstituted aromatic heterocyclic group having 3 to 25 ring-member atoms, and
- Y is a substituted or unsubstituted divalent aromatic hydrocarbon group having 6 to 60 carbon atoms, or a substituted or unsubstituted divalent aromatic heterocyclic group having 3 to 60 ring-member atoms,
- wherein Ar1 and Ar2 are different groups;
- and
- at least one of Ar1 and Ar2 is a group represented by Chemical Formula 2C or Chemical Formula 2D:
- wherein, in Chemical Formula 2C and Chemical Formula 2D,
- Z1 is CRaRb, NRc, Se, or Te,
- wherein Rc is hydrogen, a linear or branched hydrocarbon group having 1 to 14 carbon atoms, an aromatic hydrocarbon group having 6 to 14 carbon atoms, or an aromatic heterocyclic group having 3 to 25 ring-member atoms, and
- Ra and Rb are joined to provide a spiro structure,
- R1, R2, and R3 are each independently hydrogen, a linear or branched hydrocarbon group having 1 to 14 carbon atoms, an aromatic hydrocarbon group having 6 to 14 carbon atoms, or an aromatic heterocyclic group having 3 to 25 ring-member atoms,
- a and b are each independently an integer of 1 to 4, and
- a link without * indicates a bond to the nitrogen of the arylamine side chain of Chemical Formula 1.
12 more elements
A copolymer comprising a structural unit represented by Chemical Formula 1:
- wherein, in Chemical Formula 1,
- X is a single bond, -L1a-, or -L1b-L1c-, wherein Lia, Lib, and Lie are each independently a substituted or unsubstituted divalent aromatic hydrocarbon group having 6 to 25 carbon atoms,
- L2 is a substituted or unsubstituted aromatic hydrocarbon group having 6 to 25 carbon atoms, or a substituted or unsubstituted aromatic heterocyclic group having 3 to 25 ring-member atoms,
- Y is a substituted or unsubstituted divalent aromatic hydrocarbon group having 6 to 60 carbon atoms, or a substituted or unsubstituted divalent aromatic heterocyclic group having 3 to 60 ring-member atoms,
- wherein Ar1 and Ar2 are different groups;
- and
- wherein in Chemical Formula 1 Ar1 and Ar2 are independently a group represented by Group 2 and at least one of Ar1 or Ar2 is one of (2-21) to (2-33):
- wherein, in Group 2,
- R is each independently a hydrogen atom or a linear or branched hydrocarbon group having 1 to 14 carbon atoms,
- a link without * is a bond to the nitrogen of the arylamine side chain of Chemical Formula 1, and
- a hydrogen atom of an aromatic ring of a Group 2 structure is optionally substituted by a linear or branched hydrocarbon group having 1 to 14 carbon atoms.
8 more elements
Dependencies are inferred from the claim text.