US 12,460,126 B2
Quantum dot, method of preparing the quantum dot, composition including the quantum dot, optical member including the quantum dot, and electronic apparatus including the quantum dot
Yunhyuk Ko, Yongin-si (KR); Changhee Lee, Yongin-si (KR); Prem Prabhakaran, Jeongeup-si (KR); Dongryeol Whang, Daejeon (KR); Gyeongju Kim, Jeongeup-si (KR); and Kwangsup Lee, Daejeon (KR)
Assigned to Samsung Display Co., Ltd., Yongin-si (KR); and Hannam University Institute for Industry—Academia Cooperation, Daejeon (KR)
Filed by Samsung Display Co., Ltd., Yongin-si (KR); and Hannam University Institute for Industry-Academia Cooperation, Daejeon (KR)
Filed on Jun. 17, 2022, as Appl. No. 17/807,693.
Claims priority of application No. 10-2021-0080440 (KR), filed on Jun. 21, 2021.
Prior Publication US 2023/0011105 A1, Jan. 12, 2023
Int. Cl. C09K 11/02 (2006.01); B82Y 20/00 (2011.01); B82Y 40/00 (2011.01); C09K 11/88 (2006.01); H10H 20/851 (2025.01); H10K 50/115 (2023.01)
CPC C09K 11/025 (2013.01) [C09K 11/883 (2013.01); H10H 20/8512 (2025.01); B82Y 20/00 (2013.01); B82Y 40/00 (2013.01); H10K 50/115 (2023.02)] 18 Claims
 
1. A quantum dot comprising:
a nanomaterial; and
a first ligand on a surface of the nanomaterial, wherein
the nanomaterial comprises a core and a shell that covers at least a part of the core, and
the first ligand is represented by Formula 1:

OG Complex Work Unit Chemistry
wherein, in Formula 1,
L1 is N(Z1a), O, S, or C(Z1a)(Z1b),
L2 is N(Z2a), O, S, or C(Z2a)(Z2b),
L3 is N(Z3a), O, S, or C(Z3a)(Z3b),
L4 is N(Z4a), O, S, or C(Z4a)(Z4b),
L5 is N(Z5a), O, S, or C(Z5a)(Z5b),
L6 is N(Z6a), O, S, or C(Z6a)(Z6b),
n1 to n6 are each independently an integer from 0 to 10,
R1 to R4, Z1a to Z6a, and Z1b to Z6b are each independently selected from: hydrogen, deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a thiol group, a cyano group, a nitro group, an amidino group, a hydrazine group, a hydrazone group, a C1-C60 alkyl group unsubstituted or substituted with at least one R10a, a C2-C60 alkenyl group unsubstituted or substituted with at least one R10a, a C2-C60 alkynyl group unsubstituted or substituted with at least one R10a, a C1-C60 alkoxy group unsubstituted or substituted with at least one R10a, a C1-C60 alkylthio group unsubstituted or substituted with at least one R10a, a C3-C60 carbocyclic group unsubstituted or substituted with at least one R10a, a C1-C60 heterocyclic group unsubstituted or substituted with at least one R10a, a C6-C60 aryloxy group unsubstituted or substituted with at least one R10a, a C6-C60 arylthio group unsubstituted or substituted with at least one R10a, —Si(Q1)(Q2)(Q3), —N(Q1)(Q2), —O(Q1), —S(Q1), —B(Q1)(Q2), —C(═O)(Q1), —S(═O)2(Q1), —P(Q1)(Q2), and —P(═O)(Q1)(Q2); and a conjugate base thereof,
R10a is:
deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a thio group, a cyano group, a nitro group, an amidino group, a hydrazine group, or a hydrazone group;
a C1-C60 alkyl group, a C2-C60 alkenyl group, a C2-C60 alkynyl group, a C1-C60 alkoxy group, or a C1-C60 alkylthio group, each unsubstituted or substituted with deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a thio group, a cyano group, a nitro group, an amidino group, a hydrazine group, a hydrazone group, a C3-C60 carbocyclic group, a C1-C60 heterocyclic group, a C6-C60 aryloxy group, a C6-C60 arylthio group, —Si(Q11)(Q12)(Q13), —N(Q11)(Q12), —O(Q11), —S(Q11), —B(Q11)(Q12), —C(═O)(Q11), —S(═O)2(Q11), —P(Q11)(Q12), —P(═O)(Q11)(Q12), or any combination thereof;
a C3-C60 carbocyclic group, a C1-C60 heterocyclic group, a C6-C60 aryloxy group, or a C6-C60 arylthio group, each unsubstituted or substituted with deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a thio group, a cyano group, a nitro group, a C1-C60 alkyl group, a C2-C60 alkenyl group, a C2-C60 alkynyl group, a C1-C60 alkoxy group, a C1-C60 alkylthio group, a C3-C60 carbocyclic group, a C1-C60 heterocyclic group, a C6-C60 aryloxy group, a C6-C60 arylthio group, —Si(Q21)(Q22)(Q23), —N(Q21)(Q22), —O(Q21), —S(Q21), —B(Q21)(Q22), —C(═O)(Q21), —S(═O)2(Q21), —P(Q21)(Q22), —P(═O)(Q21)(Q22), or any combination thereof; or
—Si(Q31)(Q32)(Q33), —N(Q31)(Q32), —O(Q31), —S(Q31), —B(Q31)(Q32), —C(═O)(Q31), —S(═O)2(Q31), —P(Q31)(Q32), or —P(═O)(Q31)(Q32), and
wherein Q1 to Q3, Q11 to Q13, Q21 to Q23, and Q31 to Q33 are each independently:
hydrogen; deuterium; —F; —Cl; —Br; —I; a hydroxyl group; a thio group; an amino group; a cyano group; a nitro group; a C1-C60 alkyl group; a C2-C60 alkenyl group; a C2-C60 alkynyl group; a C1-C60 alkoxy group; or a C3-C60 carbocyclic group or a C1-C60 heterocyclic group, each unsubstituted or substituted with deuterium, —F, a cyano group, a C1-C60 alkyl group, a C1-C60 alkoxy group, a phenyl group, a biphenyl group, or any combination thereof.