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US 12,565,613 B2Granted
Quantum dots with donor-acceptor ligands
AssigneeShoei Chemical Inc.
InventorsDaekyoung Kim, Christian Ippen, Ruiquing Ma, Dylan Gary, Donald Zehnder
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Abstract
The present invention provides nanostructure compositions and methods of producing nanostructure compositions. The nanostructure compositions comprise a population of nanostructures comprising donor-acceptor ligands. The present invention also provides nanostructure films comprising the nanostructure compositions and methods of making nanostructure films using the nanostructure compositions.
Claims16
A nanostructure composition comprising:
- (a) at least one population of nanostructures comprising an InP core, a ZnS shell, and a ZnSe shell;
- and
- (b) at least one donor-acceptor ligand, wherein the donor-acceptor ligand comprises at least one terminal functional group, and wherein the at least one terminal functional group is bound to the surface of the nanostructures, wherein the donor-acceptor ligand has formula I or formula II:
- Dd-Aa-FGf (I) or Aa-Dd-FGf (II)
- wherein:
- FG is —OH, —SH, —NH2, —CO2H, —P(O)(OH)2, —P(O)OH, or —SO3H;
- D is a donor moiety comprising a monocyclic or fused polycyclic aryl or heteroaryl comprising between 5 and 20 atoms, optionally substituted with one or more substituents;
- A is an acceptor moiety comprising for each occurrence independently, a monocyclic or fused polycyclic aryl or heteroaryl comprising between 5 and 20 atoms, optionally substituted with one or more substituents;
- a is an integer between 1 and 4;
- d is an integer between 1 and 4;
- and
- f is an integer between 1 and 4.
9 more elements
A method of replacing a first ligand on a nanostructure with a second ligand, the method comprising:
- admixing a reaction mixture comprising a population of nanostructures comprising an InP core, a ZnS shell, and a ZnSe shell, each nanostructure having the first ligand bound to the nanostructure and a donor-acceptor ligand as the second ligand, such that the second ligand displaces the first ligand and becomes bound to the nanostructure, wherein the donor-acceptor ligand has formula I or formula II:
- Dd-Aa-FGf (I) or Aa-Dd-FGf (II)
- wherein:
- FG is —OH, —SH, —NH2, —CO2H, —P(O)(OH)2, —P(O)OH, or —SO3H;
- D is a donor moiety comprising a monocyclic or fused polycyclic aryl or heteroaryl comprising between 5 and 20 atoms, optionally substituted with one or more substituents;
- A is an acceptor moiety comprising for each occurrence independently, a monocyclic or fused polycyclic aryl or heteroaryl comprising between 5 and 20 atoms, optionally substituted with one or more substituents;
- a is an integer between 1 and 4;
- d is an integer between 1 and 4;
- and
- f is an integer between 1 and 4.
7 more elements
Dependencies are inferred from the claim text.