Silicon nanocrystals dispersed in water: Photosensitizers for molecular oxygen
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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.
|Creators||Goller, B., Polisski, S., Wiggers, H. and Kovalev, D.|
|Uncontrolled Keywords||luminescence, nanostructured materials, photochemistry, silicon|
|Departments||Faculty of Science > Physics|
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