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Ordered porous mesostructured materials from nanoparticle-block copolymer self-assembly

United States Patent

October 29, 2013
View the Complete Patent at the US Patent & Trademark Office
The invention provides mesostructured materials and methods of preparing mesostructured materials including metal-rich mesostructured nanoparticle-block copolymer hybrids, porous metal-nonmetal nanocomposite mesostructures, and ordered metal mesostructures with uniform pores. The nanoparticles can be metal, metal alloy, metal mixture, intermetallic, metal-carbon, metal-ceramic, semiconductor-carbon, semiconductor-ceramic, insulator-carbon or insulator-ceramic nanoparticles, or combinations thereof. A block copolymer/ligand-stabilized nanoparticle solution is cast, resulting in the formation of a metal-rich (or semiconductor-rich or insulator-rich) mesostructured nanoparticle-block copolymer hybrid. The hybrid is heated to an elevated temperature, resulting in the formation of an ordered porous nanocomposite mesostructure. A nonmetal component (e.g., carbon or ceramic) is then removed to produce an ordered mesostructure with ordered and large uniform pores.
Warren; Scott (Washington, DC), Wiesner; Ulrich (Ithaca, NY), DiSalvo, Jr.; Francis J. (Ithaca, NY)
Cornell University (Ithaca, NY)
12/ 812,714
January 13, 2009
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT The disclosed invention was made with government support under contract no. DE-FG02-03ER46072 from the Department of Energy and contract no. DMR-0605856 from the National Science Foundation. The government has rights in this invention.