US 11,866,627 B2
Quantum dot composition including a ligand bonded to a surface of a quantum dot, light emitting element including an emission layer containing a quantum dot and ligand residues, and method for manufacturing the same
Changhee Lee, Seoul (KR); Dukki Kim, Suwon-si (KR); Hyojin Ko, Seoul (KR); Sehun Kim, Yongin-si (KR); Jaehoon Kim, Seoul (KR); Hyunmi Doh, Seoul (KR); Yunku Jung, Cheonan-si (KR); and Jaekook Ha, Seoul (KR)
Assigned to Samsung Display Co., Ltd., Yongin-si (KR)
Filed by Samsung Display Co., Ltd., Yongin-si (KR)
Filed on Mar. 4, 2021, as Appl. No. 17/192,388.
Claims priority of application No. 10-2020-0066596 (KR), filed on Jun. 2, 2020.
Prior Publication US 2021/0371736 A1, Dec. 2, 2021
Int. Cl. C09K 11/06 (2006.01); C07C 309/30 (2006.01); C07C 53/00 (2006.01); C07C 63/08 (2006.01); C07F 9/54 (2006.01); C07C 43/10 (2006.01); C07C 211/09 (2006.01); C07C 309/04 (2006.01); H10K 85/60 (2023.01); H10K 50/115 (2023.01); H10K 71/00 (2023.01); H10K 71/15 (2023.01)
CPC C09K 11/06 (2013.01) [C07C 43/10 (2013.01); C07C 53/00 (2013.01); C07C 63/08 (2013.01); C07C 211/09 (2013.01); C07C 309/04 (2013.01); C07C 309/30 (2013.01); C07F 9/5407 (2013.01); C07F 9/5442 (2013.01); H10K 85/60 (2023.02); C09K 2211/10 (2013.01); C09K 2211/1007 (2013.01); H10K 50/115 (2023.02); H10K 71/00 (2023.02); H10K 71/15 (2023.02)] 13 Claims
OG exemplary drawing
 
1. A quantum dot composition comprising:
a quantum dot; and
a ligand bonded to a surface of the quantum dot,
wherein the ligand comprises:
a head portion bonded to the surface of the quantum dot and containing a polar solvent dissociative functional group; and
a tail portion connected to the head portion, the tail portion containing a non-polar organic material, and
the ligand is represented by any one among Formulae 1 to 19, and 21 to 23:

OG Complex Work Unit Chemistry

OG Complex Work Unit Chemistry

OG Complex Work Unit Chemistry
wherein in Formulae 1 to 19, and 21 to 23,
R1 and R2 are each independently a substituted or unsubstituted alkyl group having 7 to 30 carbon atoms, or a substituted or unsubstituted aryl group having 6 to 30 ring-forming carbon atoms, and
x1 is an integer of 1 to 10.