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

Wei Deng*, Dayong Jin, Krystyna Drozdowicz-Tomsia, Jingli Yuan, Jing Wu, Ewa M. Goldys

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contribution

3 Citations (Scopus)
23 Downloads (Pure)

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.

Original languageEnglish
Title of host publicationColloidal Quantum Dots/Nanocrystals for Biomedical Applications VI
EditorsWolfgang J. Parak, Kenji Yamamoto, Marek Osinski
Place of PublicationBellingham, Washingto
PublisherSPIE
Pages1-11
Number of pages11
Volume7909
ISBN (Print)9780819484468
DOIs
Publication statusPublished - 2011
EventColloidal Quantum Dots/Nanocrystals for Biomedical Applications VI - San Francisco, CA, United States
Duration: 22 Jan 201124 Jan 2011

Other

OtherColloidal Quantum Dots/Nanocrystals for Biomedical Applications VI
CountryUnited States
CitySan Francisco, CA
Period22/01/1124/01/11

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