Embedding Luminescent Nanocrystals in Silica Sol-Gel Matrices
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.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 2006
- Accession Number
- ADA445260
Entities
People
- Lindsey M. Sorensen
Organizations
- Florida State University