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We have synthesized stable, highly luminescent silica xerogels as well as optically transparent, stable aerogels that were embedded with 2.5 nm and 6 nm CdSe and 6 nm InP quantum dots. By capping the quantum dot with 3-aminopropyltriethoxysilane, a dot is able to condense within the structure of a forming silica gel. This network keeps the quantum dot in place during the solvent exchange procedure necessary to form low-density silica aerogels using supercritical drying procedures. The resulting aerogel networks show a high surface area of 789.7 m2/g and xerogels show a surface area of 448 m2/g, with a pore size of 3.16 nm. Materials created are stable under atmospheric conditions and up to temperatures of 150?C.
Quantum dot, Sol-gel, CdSe, Aerogel, Critical point drying
Date of Defense
December 1, 2005.
Submitted Note
A Thesis Submitted to the Department of Chemistry and Biochemistry in Partial Fulfillment of the Requirements for the Degree of Masters of Science.
Bibliography Note
Includes bibliographical references.
Publisher
Florida State University
Identifier
FSU_migr_etd-1624
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