Ultrabright Eu-Doped Plasmonic Ag@SiO2 Nanostructures

Time-gated Bioprobes with Single Particle Sensitivity and Negligible Background

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

*Corresponding author for this work

Research output: Contribution to journalArticle

57 Citations (Scopus)

Abstract

Eu chelate-doped plasmonic silver-core-silica-shell nanocomposites show greatly increased fluorescence enhancement factors of up to 145 at high excitation intensities, due to significantly increased radiative rates in samples with metal cores. They offer exceptionally high signal intensity, sufficient for single particle detection and compatibility with time-gated imaging offering nearly background-free conditions. A bioassay application is also presented.

Original languageEnglish
Pages (from-to)4649-4654
Number of pages6
JournalAdvanced Materials
Volume23
Issue number40
DOIs
Publication statusPublished - 25 Oct 2011

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