TITLE

Silicon nanocrystals dispersed in water: Photosensitizers for molecular oxygen

AUTHOR(S)
Goller, B.; Polisski, S.; Wiggers, H.; Kovalev, D.
PUB. DATE
May 2010
SOURCE
Applied Physics Letters;5/24/2010, Vol. 96 Issue 21, p211901
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We report on the synthesis of freestanding silicon spheres having sizes in the range of 3–10 nm. As-prepared luminescent silicon nanocrystals have H-passivated surface. Therefore, energy transfer from excitons confined in Si nanocrystals to oxygen molecules is found to be efficient. It is demonstrated that a termination of silicon nanocrystal H-passivated hydrophobic surface by lipids provides their water solubility. We found that this procedure preserves photosensitizing ability of silicon nanocrystals. Therefore, this material system can potentially be employed for a variety of biomedical applications.
ACCESSION #
51059330

 

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