Open AccessPhotoluminescence enhancement of dye-doped nanoparticles by surface plasmon resonance effects of gold colloidal nanoparticles
Author(s) -
Chu Viet Ha,
Emmanuel Fort,
Thi Ha Lien Nghiem,
Huyen T. T. Tran
Publication year - 2011
Publication title -
advances in natural sciences nanoscience and nanotechnology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.476
H-Index - 40
ISSN - 2043-6262
DOI - 10.1088/2043-6262/2/4/045010
Subject(s) - colloidal gold , surface plasmon resonance , materials science , fluorophore , nanoparticle , surface plasmon , luminescence , photoluminescence , plasmon , nanotechnology , fluorescence , förster resonance energy transfer , gold colloid , polystyrene , photochemistry , optoelectronics , chemistry , optics , polymer , composite material , physics
Due to the energy transfer from surface plasmons, the fluorescence of fluorophores near metallic nanostructures can be enhanced. This effect has been intensively studied recently for biosensor applications. This work reports on the luminescence enhancement of 100 nm Cy3 dye-doped polystyrene nanoparticles by energy transfer from surface plasmons of gold colloidal nanoparticles with sizes of 20 and 100 nm. Optimal luminescence enhancement of the fluorophores has been observed in the mixture with 20 nm gold nanoparticles. This can be attributed to the resonance energy transfer from gold nanoparticles to the fluorophore beads. The interaction between the fluorophores and gold particles is attributed to far-field interaction.