Evanescent wave-induced fluorescence study of Rhodamine 101 at dielectric interfaces

A. J. De Mello, J. A. Elliott, Gary Rumbles

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Time-integrated and time-resolved evanescent wave-induced fluorescence spectroscopies (EWIFS) have been used to probe the photophysical properties of Rhodamine 101 at two solution/solid interfaces. Interaction of Rhodamine 101 with a fused silica surface leads to a reduction in the molecular fluorescence quantum efficiency in both cases. The fluorescence kinetics of interfacial species are shown to be complex (non-exponential), a function of bulk solution concentration, and a function of distance normal to the interface. The application of the maximum entropy method to the analysis of EWIF decays is presented. Recovered lifetime distributions expose inherent complexity and heterogeneity that is hidden to conventional analysis techniques.

Original languageEnglish
Pages (from-to)4723-4731
Number of pages9
JournalJournal of the Chemical Society - Faraday Transactions
Issue number23
Publication statusPublished - Dec 7 1996

Fingerprint

Rhodamines
evanescent waves
rhodamine
Fluorescence
Maximum entropy methods
fluorescence
Fluorescence spectroscopy
Fused silica
Quantum efficiency
Solid solutions
maximum entropy method
Kinetics
quantum efficiency
solid solutions
silicon dioxide
life (durability)
probes
kinetics
decay
spectroscopy

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry

Cite this

Evanescent wave-induced fluorescence study of Rhodamine 101 at dielectric interfaces. / De Mello, A. J.; Elliott, J. A.; Rumbles, Gary.

In: Journal of the Chemical Society - Faraday Transactions, No. 23, 07.12.1996, p. 4723-4731.

Research output: Contribution to journalArticle

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