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Fluorescence Enhancement by Metal‐Core/Silica‐Shell Nanoparticles
Author(s) -
Tovmachenko O. G.,
Graf C.,
van den Heuvel D. J.,
van Blaaderen A.,
Gerritsen H. C.
Publication year - 2006
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.200500451
Subject(s) - fluorescence , materials science , metal , nanoparticle , core (optical fiber) , quenching (fluorescence) , colloidal gold , shell (structure) , cascade , nanotechnology , photochemistry , chemical engineering , optics , chemistry , composite material , metallurgy , physics , engineering
Fluorescent nanoparticles have been synthesized with a metal core, silica‐spacer shell, and a dye‐labeled silica shell. Cascade‐yellow‐labeled, silver‐core and carboxyfluorescein‐labeled, gold‐core nanoparticles with dye–metal distances of 24–25 nm exhibit fluorescence enhancement factors as high as 12.5 and 6.8, respectively. Cascade‐yellow‐labeled, gold‐core particles with a dye–metal distance of ∼15 nm show significant fluorescence quenching.