main menu MyCT
Fluorescence lifetime (the)

     Chemical Sciences index
Photochemistry index
Fluorescence lifetime (the) diagram
The transition rate constant can be calculated by use of the transition energy and oscillator strength (itself from the transition dipole moment). The quantum yield is used to convert this into an expected fluorescence lifetime.
Emission wavelength
Oscillator strength
Quantum yield
Refractive index

Rate constant
Add login to add

f should be the downward oscillator strength, which is equal to the upward oscillator strength so long as the state degeneracies are equal. If this is not the case (and the downward f is not explicity known), then the gj/gi factor may be used to adjust the upward f accordingly.