Photoluminescence enhancement of dye-doped nanoparticles by surface plasmon resonance effects of gold colloidal nanoparticles
Chu, Viet Ha; Fort, Emmanuel; Nghiem, Thi Ha Lien; Tran, Hong Nhung; Chu, Viet Ha; Institute of Physics, Vietnam Academic of Science and Technology (VAST), 10 Dao Tan, Hanoi, Vietnam; Fort, Emmanuel; Institut Langevin, ESPCI Paris Tech, CNRS UMR 7587, 10 rue Vauquelin, 75231 Paris 05, France; Nghiem, Thi Ha Lien; Institute of Physics, Vietnam Academic of Science and Technology (VAST), 10 Dao Tan, Hanoi, Vietnam; Tran, Hong Nhung; Institute of Physics, Vietnam Academic of Science and Technology (VAST), 10 Dao Tan, Hanoi, Vietnam
Журнал:
Advances in Natural Sciences: Nanoscience and Nanotechnology
Дата:
2011-12-01
Аннотация:
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.
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