radiative energy transfer

Also contains definition of: trivial energy transfer
https://doi.org/10.1351/goldbook.R05063
Transfer of
excitation energy
by radiative
deactivation
of a donor molecular entity and reabsorption of the emitted radiation by an acceptor molecular entity.
Notes:
  1. Radiative transfer results in a decrease of the donor
    fluorescence
    intensity in the region of
    spectral overlap
    . Such a distortion of the
    fluorescence
    spectrum is called inner-
    filter
    effect.
  2. Radiative energy transfer depends on the shape and size of the vessel utilized and on the configuration of the latter with respect to excitation and observation.
  3. The fraction a of photons emitted by D and absorbed by A is given by a=1ΦD0λIλD(λ)[110εA(λ)cAl]dλ where cA is the molar concentration of acceptor, ΦD0 is the
    fluorescence
    quantum yield
    in the absence of acceptor, l is the thickness of the sample, IλD(λ) and εA(λ) are the
    spectral distribution
    of the
    spectral radiant intensity
    of the donor
    fluorescence
    and the
    molar decadic absorption coefficient
    of the acceptor, respectively, with the
    normalization
    condition ΦD0=λIλD(λ)dλ.
    For relatively low
    absorbance
    , a can be approximated by a=2.3ΦD0cAlλIλD(λ)εA(λ)dλ where the integral represents the overlap between the donor
    fluorescence
    spectrum and the acceptor
    absorption spectrum
    .
Source:
PAC, 2007, 79, 293. (Glossary of terms used in photochemistry, 3rd edition (IUPAC Recommendations 2006)) on page 411 [Terms] [Paper]