Title:
NANOPARTICLE ASSEMBLED HOLLOW SPHERES
Document Type and Number:
WIPO Patent Application WO2003062372
Kind Code:
A3
Abstract:
A design strategy for constructing hierarchically structured materials using nanoparticles and synthetic biopolymers has been developed. Block copolypeptides or homopolymer polyelectrolytes are used as structure-directing agents to arrange nanoparticles (composed of metals, metal non-oxides, metal oxides, or organics) into unusual microstructures, such as spheres, "apples" and "cups". Hollow spheres can be made wherein nanoparticles of one composition are spatially oriented completely interior or exterior to nanoparticles of a second composition. These aggregates contain nanoparticles only in the shell walls, and maintain their hollowness upon calcination. These shapes can also be fabricated into films. These robust materials are anticipated to have great promise in applications that require surface catalysis, magnetic/electronic/optic properties, transport capabilities, and combinations thereof, such as drug delivery, packaging, catalysis, and sensors.
Inventors:
CHA JENNIFER
DEMING TIMOTHY J
STUCKY GALEN D
WONG MICHAEL
BIRKEDAL HENRIK
BARTL MICHAEL H
SUMEREL JAN L
DEMING TIMOTHY J
STUCKY GALEN D
WONG MICHAEL
BIRKEDAL HENRIK
BARTL MICHAEL H
SUMEREL JAN L
Application Number:
PCT/US2002/031446
Publication Date:
March 04, 2004
Filing Date:
October 02, 2002
Export Citation:
Assignee:
UNIV CALIFORNIA (US)
International Classes:
A61K47/48; A61K48/00; C12Q1/68; (IPC1-7): A61K9/16; A61K9/50
Foreign References:
| US6123965A | 2000-09-26 | |||
| US5840340A | 1998-11-24 | |||
| US6395029B1 | 2002-05-28 |
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