Type of Document	Thesis
Author	Sorensen, Lindsey Michelle
Author's Email Address	cdtyinzer@hotmail.com
URN	etd-12082005-105351
Title	Embedding Luminescent Nanocrystals in Silica Sol-Gel Matrices
Degree	Master of Science
Department	Chemistry and Biochemistry, Department of
Advisory Committee	Advisor Name Title Geoffrey F. Strouse Committee Chair Albert E. Stiegman Committee Member William T. Cooper Committee Member
Keywords	Quantum dot sol-gel CdSe aerogel critical point drying
Date of Defense	2005-12-01
Availability	unrestricted
Abstract 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.
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