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

Zhi Ya Ma; Dosi Dosev; Ian M. Kennedy

doi:10.1088/0957-4484/20/8/085608

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

Zhi Ya Ma, Dosi Dosev, Ian M. Kennedy

Mechanical and Aerospace Engineering

Research output: Contribution to journal › Article › peer-review

20 Scopus citations

Abstract

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.

Original language	English (US)
Article number	085608
Journal	Nanotechnology
Volume	20
Issue number	8
DOIs	https://doi.org/10.1088/0957-4484/20/8/085608
State	Published - 2009

ASJC Scopus subject areas

Bioengineering
Chemistry(all)
Electrical and Electronic Engineering
Mechanical Engineering
Mechanics of Materials
Materials Science(all)

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abstract = "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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