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US 2022/0177642 A1Published application
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.
Claims20
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 L1a, L1b, and L1c 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, L2, Ar1, and Ar2 satisfy at least one of Conditions (i) or (ii):
- (i) Ar1 and Ar2 are different groups;
- and
- (ii) L2 and Ar1 join to form a ring.
6 more elements
Dependencies are inferred from the claim text.