Silica mesoporous aerogels having three-dimensional nanoarchitecture with colloidal gold-protein superstructures nanoglued therein
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United States of America Patent
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Jul 3, 2007
Grant Date -
Jan 27, 2005
app pub date -
Aug 18, 2004
filing date -
Apr 16, 2003
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Abstract
This disclosure describes the first viable non-enzyme protein encapsulated within an aerogel. In this, a large excess of cyt c is added to a commercial buffered Au sol solution ( ) which results in the formation of a gold.about.protein-protein superstructure in the absence of separation techniques which destroy the superstructure.The gold.about.protein-protein superstructure is then nanoglued into a silica framework during the sol to gel transition. To form the gel, the Au.about.cyt. c superstructure in buffered medium is added to a silica sol and the composite gels are washed with acetone followed by liquid carbon dioxide and then supercritically dried to form the aerogel.The biocomposite aerogels have a multiplicity of applications particularly in the realm of sensing and energy transformation.
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