Coating processes – Nonuniform coating – Applying superposed diverse coatings or coating a coated base
Reexamination Certificate
2007-12-25
2007-12-25
Fletcher, III, William Phillip (Department: 1762)
Coating processes
Nonuniform coating
Applying superposed diverse coatings or coating a coated base
C977S882000, C977S883000
Reexamination Certificate
active
10621897
ABSTRACT:
A self-replicating monolayer system employing polymerization of monomers or nanoparticle ensembles on a defined template provides a method for synthesis of two-dimensional single molecule polymers. Systems of self-replicating monolayers may be used as templates for the growth of inorganic colloids. A preferred embodiment is a SAM-based replication, wherein an initial monolayer is patterned and used as a template for self-assembly of a second monolayer by molecular recognition. Once the second monolayer has formed, it is polymerized in place and the two monolayers are separated to form a replicate. Both monolayers may then function as templates for monolayer assemblies. A generic self-replicating monomer unit suitable for use in one embodiment comprises a polymerizable moiety attached by methylene repeats to a recognition element and an ending unit that will not interfere with the chosen recognition chemistry. The recognition element is self-complementary, unless a set of two replicating monomers with compatible cross-linking chemistry is employed. In a two-component replication system utilizing two different kinds of recognition chemistries, the initial template undergoes replication cycles, while maintaining the two-dimensional segregation of the two types of monomers. During subsequent replications, the component domains experience little or no mixing, allowing the two-component, patterned assembly to be exponentially replicated. After replication, selective mineralization and/or electroless plating may produce a two-dimensional inorganic sheet having patterned domains within it.
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Jacobson Joseph M.
Mosley David W.
Fletcher, III William Phillip
Henderson Norma E.
Massachusetts Institute of Technology
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