Evanescent wave spectroscopic studies of surface enhanced fluorescence quantum efficiencies

Andrew J. De Mello; Ben Crystall; Gary Rumbles

doi:10.1006/jcis.1995.1017

Evanescent wave spectroscopic studies of surface enhanced fluorescence quantum efficiencies

Andrew J. De Mello, Ben Crystall, Gary Rumbles

National Renewable Energy Laboratory

Research output: Contribution to journal › Article › peer-review

21 Citations (Scopus)

Abstract

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 language	English
Pages (from-to)	161-167
Number of pages	7
Journal	Journal of Colloid and Interface Science
Volume	169
Issue number	1
DOIs	https://doi.org/10.1006/jcis.1995.1017
Publication status	Published - 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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10.1006/jcis.1995.1017

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abstract = "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.",

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