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Proceedings Article

Plasmonic Ag/SiO2 composite nanoparticles doped with europium chelate and their metal enhanced fluorescence

[+] Author Affiliations
Wei Deng, Dayong Jin, Krystyna Drozdowicz-Tomsia, Ewa M. Goldys

Macquarie Univ. (Australia)

Jingli Yuan, Jing Wu

Dalian Univ. of Technology (China)

Proc. SPIE 7909, Colloidal Quantum Dots/Nanocrystals for Biomedical Applications VI, 79090Z (February 11, 2011); doi:10.1117/12.872833
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From Conference Volume 7909

  • Colloidal Quantum Dots/Nanocrystals for Biomedical Applications VI
  • Wolfgang J. Parak; Kenji Yamamoto; Marek Osinski
  • San Francisco, California, USA | January 22, 2011

abstract

We report silver nanostructure-enhanced fluorescence of a europium (Eu) chelate, BHHCT-Eu-DPBT, which was covalently bound in Ag/SiO2 nanocomposites. This design enhances the europium signal intensity by more than one order of magnitude, and accelerates the decay time from 0.3 ms down to 60 microseconds, at low excitation conditions. These nanocomposites were bright enough to be observed in time-gated fluorescence microscopy under 365 nm LED excitation. The increased brightness and reduced lifetime of such fluorescent core-shell nanocomposites will enhance their applicability for ultrasensitive bioassays and bioimaging, especially with time-gating.

© (2011) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Citation

Wei Deng ; Dayong Jin ; Krystyna Drozdowicz-Tomsia ; Jingli Yuan ; Jing Wu, et al.
"Plasmonic Ag/SiO2 composite nanoparticles doped with europium chelate and their metal enhanced fluorescence", Proc. SPIE 7909, Colloidal Quantum Dots/Nanocrystals for Biomedical Applications VI, 79090Z (February 11, 2011); doi:10.1117/12.872833; http://dx.doi.org/10.1117/12.872833


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