Efficient excitation energy transfer among multiple dyes in polystyrene microspheres

Daniel V. Roberts, Bruce Paul Wittmershaus, Yu Zhong Zhang, Sharon Swan, Michael P. Klinosky

Research output: Contribution to journalArticle

40 Citations (Scopus)

Abstract

Our comparison of fluorescence excitation and absorption spectra from 40 nm polystyrene spheres containing six different dyes illustrates efficient excitation energy transfer among the dyes. The six-dye spheres collective absorption covers the entire visible region. The five dyes with the highest first excited state energy levels transfer their excitations to the sixth dye of the lowest energy level. The average excitation transfer efficiency to the sixth dye is 95% over most of the visible spectrum. As a result of this transfer, the spheres have a fluorescence maximum at 718 nm, the peak of emission from the lowest energy level dye. Each sphere functions as an artificial light-harvesting network. They have practical applications as fluorescent labels for biological systems and act as an efficient, broadly absorbing wavelength converter.

Original languageEnglish (US)
Pages (from-to)225-231
Number of pages7
JournalJournal of Luminescence
Volume79
Issue number4
DOIs
StatePublished - Nov 30 1998

Fingerprint

Excitation energy
Polystyrenes
Energy Transfer
Microspheres
Energy transfer
polystyrene
Coloring Agents
dyes
energy transfer
excitation
Electron energy levels
energy levels
Fluorescence
fluorescence
Biological systems
visible spectrum
Excited states
converters
Labels
Absorption spectra

All Science Journal Classification (ASJC) codes

  • Biophysics
  • Atomic and Molecular Physics, and Optics
  • Chemistry(all)
  • Biochemistry
  • Condensed Matter Physics

Cite this

Roberts, Daniel V. ; Wittmershaus, Bruce Paul ; Zhang, Yu Zhong ; Swan, Sharon ; Klinosky, Michael P. / Efficient excitation energy transfer among multiple dyes in polystyrene microspheres. In: Journal of Luminescence. 1998 ; Vol. 79, No. 4. pp. 225-231.
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Efficient excitation energy transfer among multiple dyes in polystyrene microspheres. / Roberts, Daniel V.; Wittmershaus, Bruce Paul; Zhang, Yu Zhong; Swan, Sharon; Klinosky, Michael P.

In: Journal of Luminescence, Vol. 79, No. 4, 30.11.1998, p. 225-231.

Research output: Contribution to journalArticle

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T1 - Efficient excitation energy transfer among multiple dyes in polystyrene microspheres

AU - Roberts, Daniel V.

AU - Wittmershaus, Bruce Paul

AU - Zhang, Yu Zhong

AU - Swan, Sharon

AU - Klinosky, Michael P.

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AB - Our comparison of fluorescence excitation and absorption spectra from 40 nm polystyrene spheres containing six different dyes illustrates efficient excitation energy transfer among the dyes. The six-dye spheres collective absorption covers the entire visible region. The five dyes with the highest first excited state energy levels transfer their excitations to the sixth dye of the lowest energy level. The average excitation transfer efficiency to the sixth dye is 95% over most of the visible spectrum. As a result of this transfer, the spheres have a fluorescence maximum at 718 nm, the peak of emission from the lowest energy level dye. Each sphere functions as an artificial light-harvesting network. They have practical applications as fluorescent labels for biological systems and act as an efficient, broadly absorbing wavelength converter.

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