Multifunctional Fe3O4−Au/Porous Silica@Fluorescein Core/Shell Nanoparticles with Enhanced Fluorescence Quantum Yield

Core/shell Fe3O4−Au/silica nanoparticles with controllable fluorescein doped into nanoporous silica shells are synthesized. The quantum yield of fluorescein significantly increases through a synthetic electromagnetic field coupling of the dumbbell-like Fe3O4−Au cores. Theoretical simulation further...

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Bibliographic Details
Published in:Journal of physical chemistry. C 2010-11, Vol.114 (43), p.18313-18317
Main Authors: Zhang, X. F, Clime, L, Ly, H. Q, Trudeau, M, Veres, T
Format: Article
Language:English
Subjects:
C: Nanops and Nanostructures
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Summary:Core/shell Fe3O4−Au/silica nanoparticles with controllable fluorescein doped into nanoporous silica shells are synthesized. The quantum yield of fluorescein significantly increases through a synthetic electromagnetic field coupling of the dumbbell-like Fe3O4−Au cores. Theoretical simulation further proves that the anomalously plasmonic oscillation of Fe3O4−Au nanoparticles is a dominant contributor to the fluorescence enhancement.
ISSN:1932-7447
1932-7455
DOI:10.1021/jp1051112