A substance has a fluorescence quantum yield of ϕF,0 = 0.16. In an experiment to measure the fluorescence lifetime of this substance, it was observed that the fluorescence emission decayed with a half-life of 1.5 ns. What is the fluorescence rate constant of this substance?

A substance has a fluorescence quantum yield of ϕF,0 = 0.16. In an experiment to measure the fluorescence lifetime of this substance, it was observed that the fluorescence emission decayed with a half-life of 1.5 ns. What is the fluorescence rate constant of this substance?

Principles of Modern Chemistry

8th Edition

ISBN:9781305079113

Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler

Publisher:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler

Chapter20: Molecular Spectroscopy And Photochemistry

Section: Chapter Questions

Problem 6P

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Photochemistry

Photochemistry is the part of chemistry that studies the various mechanisms of reactions that are triggered by the presence of light energy. It also helps to study the changes involved in a molecule that can undergo the absorption of radiation.

Question

A substance has a fluorescence quantum yield of ϕ_F,0 = 0.16. In an experiment to measure the fluorescence lifetime of this substance, it was observed that the fluorescence emission decayed with a half-life of 1.5 ns. What is the fluorescence rate constant of this substance?

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