Biocompatible silicon quantum dots by ultrasound-induced solution route

Soojin Lee; Woon-Jo Cho

doi:10.1117/12.560240

14 October 2004 Biocompatible silicon quantum dots by ultrasound-induced solution route

Soojin Lee, Woon-Jo Cho

Proceedings Volume 5510, Nanophotonic Materials; (2004) https://doi.org/10.1117/12.560240
Event: Optical Science and Technology, the SPIE 49th Annual Meeting, 2004, Denver, Colorado, United States

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.

Citation Download Citation

Soojin Lee and Woon-Jo Cho "Biocompatible silicon quantum dots by ultrasound-induced solution route", Proc. SPIE 5510, Nanophotonic Materials, (14 October 2004); https://doi.org/10.1117/12.560240

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