| Autor: |
Prtljaga, Nikola, D’Amato, Elvira, Pitanti, Alessandro, Guider, Romain, Froner, Elena, Larcheri, Silvia, Scarpa, Marina, Pavesi, Lorenzo |
| Zdroj: |
Nanotechnology; 5/27/2011, Vol. 22 Issue 21, p1-1, 1p |
| Abstrakt: |
Stable aqueous solutions of undecylenic-acid-grafted silicon nanocrystals (Si-nc) were prepared. The time evolution of the photoluminescence properties of these hydrophilic silicon nanocrystals has been followed on different timescales (hours and days). On a short timescale (hours), Si-nc tend to agglomerate while the PL lineshape and intensity are stable. Agglomeration can be reduced by using suitable surfactants. On a long timescale (days), oxidation of Si-nc occurs even in the presence of surfactants. These two observations render Si-nc very useful as a labeling agent for biosensing. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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