期刊
NANOTECHNOLOGY
卷 20, 期 8, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/0957-4484/20/8/085608
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资金
- National Institute of Environmental Health Sciences (NIEHS) [5 P42 ES004699]
- USDA Cooperative State Research, Education and Extension Service [2009-35603-05070]
A facile one-pot microemulsion method has been developed for the synthesis of spherical silver core-silica shell (Ag@SiO2) nanoparticles with europium chelates doped in the shell through a silane agent. The method is significantly more straightforward than other extant methods. Measurements of the luminescent emissions from the Ag@SiO2 nanoparticles, in comparison with control silica nanoparticles without silver cores, showed that the presence of the silver cores can increase the fluorescence intensity approximately 24-fold and decrease the luminescence lifetime. This enhancement offers a potential increase in overall particle detectability with increased fluorophore photostability.
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