Method for patterning metal using nanoparticle containing precursors
AssigneeArizona Board of Regents
InventorsJoseph W. Perry, Seth R. Marder, Francesco Stellacci
Life of this patent
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Abstract
Continuous, conducting metal patterns can be formed from metal nanoparticle containing films by exposure to radiation (FIG. 1). The metal patterns can be one, two, or three dimensional and have high resolution resulting in feature sizes in the order of micron down to nanometers Compositions containing the nanoparticles coated with a ligand and further including a dye, a metal salt, and either a matrix or an optional sacrificial donor are also disclosed.
Claims13
A method for growth of a pre-nucleated metal nanoparticle, comprising:
- providing a composite including the pre-nucleated metal nanoparticle, wherein said pre-nucleated metal nanoparticle includes organic ligand bonded nanoparticles and the composite includes a metal salt and a photon absorbing dye,
- generating a metal atom by reducing a metal ion in the composite by exposure to radiation;
- and
- reacting said metal atom with said pre-nucleated metal nanoparticle in the composite, thereby growing a metal nanoparticle in the composite, said organic ligand bonded nanoparticles comprising a mixture of two or more types of ligand coated metal nanoparticles,
- wherein at least one organic ligand of the organic ligand bonded nanoparticles is represented by the formula A-B-C, wherein A is a molecular or ionic fragment, B is an organic fragment that has two points of attachments for connecting to point A and for connecting to point C, and C is a molecular fragment with one point of attachment that connects to fragment B.
A method for growth of a pre-nucleated metal nanoparticle, comprising:
- forming a film from said pre-nucleated metal nanoparticle, a metal salt, a photon absorbing dye and a polymer matrix, said pre-nucleated metal nanoparticle including organic ligand bonded nanoparticles;
- generating a metal atom by reducing metal ion in the composite by exposure to radiation;
- and
- reacting said metal atom with said pre-nucleated metal nanoparticle, thereby growing a metal nanoparticle,
- said organic ligand bonded nanoparticles comprising a mixture of two or more types of ligand coated metal nanoparticles,
- wherein at least one organic ligand of the organic ligand bonded nanoparticles is represented by the formula A-B-C, wherein A is a molecular or ionic fragment, B is an organic fragment that has two points of attachments for connecting to point A and for connecting to point C, and C is a molecular fragment with one point of attachment that connects to fragment B.
Dependencies are inferred from the claim text.