A microemulsion preparation of nanoparticles of europium in silica with luminescence enhancement using silver

作者：Ma Zhi Ya; Dosev Dosi; Kennedy Ian M^*

来源：Nanotechnology, 2009, 20(8): 085608.

DOI：10.1088/0957-4484/20/8/085608

A facile one-pot microemulsion method has been developed for the synthesis of spherical silver core-silica shell (Ag@SiO(2)) 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@SiO(2) 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.

• 出版日期2009-2-25