Semiconductor nanoparticles coated with electroactive polymers

Details Semiconductor nanoparticles coated with electroactive polymers Semiconductor nanoparticles coated with electroactive polymers

2005-04-12

2005-04-12

Le, H. Thi (Department: 1773)

Stock material or miscellaneous articles

Coated or structually defined flake, particle, cell, strand,...

Particulate matter

C427S214000, C427S215000, C427S220000, C427S221000, C427S301000, C427S407100, C977S726000

Reexamination Certificate

active

06878446

ABSTRACT:
A method for coating particles and the coated particles obtained thereby are disclosed. The particles are first placed in a solution of a first monomer that forms a self-assembling monolayer on the particles thereby forming coated particles. The coated particles are then suspended in a second solution that includes a chemical species and an initiator for oxidative polymerization. The chemical species has a higher oxidation potential than the monomers. In addition, the chemical species form a homopolymer in the presence of the initiator that is covalently bound to the first monomers. Particles of semiconductors such as TiO2, SiO2, SnO2, Al2O3can be coated with polymers that alter the bandgap energy of the semiconducting particles and/or provide other useful surface chemistries.

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Furbeth et al, “Novel protective coatings for steel based on a combination of self-assembled monolayers and conducting polymers”, (2002).*
Martin et al, “Surface Structures of 4-Chlorocatechol Absorbed on Titanium Dioxide”, Environ. Sci. Technol., 1996, 30, 2535-2542.

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