Advanced Materials

Fabrication of Stable Low-Density Silica Aerogels Containing Luminescent ZnS Capped CdSe Quantum Dots


  • Funding for this work was provided in part by a grant from the National Institutes of Health (NBIB 7Ro1EB000832) and the Air Force Office of Scientific Research (MURI 1606U81). L. S. was supported through the Air Force Institute of Technology's Civilian Institute Program.


Luminescent CdSe quantum dots of 2.5 and 6.0 nm dimension have been incorporated into a low-density silica aerogels matrix. The aerogels are formed from the supercritical CO2 extraction of an alcogel containing quantum dots surface passivated with 3-aminopropyltriethoxysilane. The resulting aerogels (see figure and cover) are low scattering and show intense, stable luminescence.

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