Evanescent wave spectroscopic studies of surface enhanced fluorescence quantum efficiencies

Andrew J. De Mello, Ben Crystall, Gary Rumbles

Research output: Contribution to journalArticlepeer-review

21 Citations (Scopus)


The techniques of evanescent wave induced fluorescence spectroscopy (EWIFS) and time-correlated single-photon counting have been combined to investigate the photophysical properties of auramine-O at a solid/solution interface. Interaction of the dye with the surface causes an enhancement of the fluorescence quantum efficiency through the restriction of intramolecular rotations. The fluorescence kinetics of the adsorbed molecules are shown to be a function of surface and bulk solution concentration. The application of the maximum entropy method to the analysis of EWIFS decays is also introduced and discussed.

Original languageEnglish
Pages (from-to)161-167
Number of pages7
JournalJournal of Colloid and Interface Science
Issue number1
Publication statusPublished - Jan 1995

ASJC Scopus subject areas

  • Colloid and Surface Chemistry
  • Physical and Theoretical Chemistry
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Electronic, Optical and Magnetic Materials
  • Biomaterials

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