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US 12,365,830 B2Granted
Ligand-exchangeable janus nanoparticles and methods of making the same
AssigneeAlliance for Sustainable Energy, LLC
InventorsMatthew Craig Beard, Marissa Sally Martinez, Zhiyuan Huang
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Abstract
The present disclosure relates to a nanocrystal that includes a nanocrystal core, a first ligand coordinated to a first portion of a surface of the nanocrystal core, and a second ligand coordinated to a second portion of the surface, where the second ligand includes a first functionalized aromatic molecule.
Claims20
A nanocrystal comprising:
- a nanocrystal core comprising a mixed alloy;
- and
- a Janus ligand shell comprising a first ligand coordinated to a first portion of a surface of the nanocrystal core and a second ligand coordinated to a second portion of the surface, wherein:
- the first ligand comprises at least one of an alkyl carboxylate, an alkyl phosphonate, an alkyl thiolate, or a combination thereof, and
- the second ligand is different than the first ligand.
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A method comprising:
- adding a molecule to a first solution comprising a first solvent and a starting nanocrystal, wherein:
- the starting nanocrystal comprises a mixed alloy core and a starting ligand coordinated to a surface of the mixed alloy core,
- the starting ligand comprises at least one of an alkyl carboxylate, an alkyl phosphonate, an alkyl thiolate, or a combination thereof,
- the adding results in at least a portion of the molecule forming an exchange ligand that is different than the starting ligand,
- the starting ligand and the exchange ligand have a ligand-ligand coupling energy less than 0.44 kBT, where kB is the Boltzmann constant and T is the temperature in Kelvin, and
- the adding results in the forming of a nanocrystal comprising the mixed alloy core and a Janus ligand shell comprising the starting ligand coordinated to a first portion of the surface and the exchange ligand coordinated to a second portion of the surface.
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Dependencies are inferred from the claim text.