Light harvesting and energy transfer in laser-dye-labeled poly(aryl ether) dendrimers

Alex Adronov, Sylvain L. Gilat, Jean Frechet*, Kaoru Ohta, Frederik V.R. Neuwahl, Graham R. Fleming

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

382 Scopus citations

Abstract

The photophysical properties of a series of laser-dye-labeled poly(aryl ether) dendrimers, generations 1-4, have been determined. The dendrimers act as extremely efficient light-harvesting antennae capable of transferring light energy through space from their periphery to their core. The light- harvesting ability of these molecules increases with generation due to an increase in the number of peripheral chromophores. The energy-transfer efficiency was found to be quantitative for generations 1-3, with only a slight decrease observed for the fourth generation (~93%). Due to the high extinction coefficients and fluorescence quantum yields of the chromophores and the efficient intramolecular energy transfer of the dendritic assemblies, these macromolecules have the potential to become integral components of molecular photonic devices.

Original languageEnglish (US)
Pages (from-to)1175-1185
Number of pages11
JournalJournal of the American Chemical Society
Volume122
Issue number6
DOIs
StatePublished - Feb 16 2000

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)
  • Biochemistry
  • Colloid and Surface Chemistry

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