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Proceedings Paper

Biocompatible silicon quantum dots by ultrasound-induced solution route
Author(s): Soojin Lee; Woon-Jo Cho
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Paper Abstract

The water-soluble silicon quantum dots (QDs) of average diameter ~3 nm were prepared in organic solvent by ultrasound-induced solution route. This speedy rout produces the silicon QDs in the size range from 2 nm to 4 nm at room temperature and ambient pressure. The product yield of QDs was estimated to be higher than 60 % based on the initial NaSi weight. The surfaces of QDs were terminated with organic molecules including biocompatible ending groups (hydroxyl, amine and carboxyl) during simple preparation. Covalent attached molecules were characterized by FT-IR spectroscopy. These water-soluble passivation of QDs has just a little effect on the optical properties of original QDs.

Paper Details

Date Published: 14 October 2004
PDF: 7 pages
Proc. SPIE 5510, Nanophotonic Materials, (14 October 2004); doi: 10.1117/12.560240
Show Author Affiliations
Soojin Lee, Korea Institute of Science and Technology (South Korea)
Woon-Jo Cho, Korea Institute of Science and Technology (South Korea)

Published in SPIE Proceedings Vol. 5510:
Nanophotonic Materials
David L. Andrews; Guozhong Z. Cao; Zeno Gaburro, Editor(s)

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