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Polarized excitation and emission anisotropy decay

the polarized fluorescence decay components contain information about the motional dynamics of the molecule. [Pg.75]

The expected time dependence of the emission anisotropy has been worked out for several important models, including those detailed in the following sections. [Pg.76]

In this case, the time-dependent fluorescence anisotropy is given by [Pg.76]

3 Rod-shaped molecule with restricted motion For a rod-shaped molecule with its transition dipole moment oriented along the rod s long axis and whose motion is confined to a cone, with one end of the rod fixed at the cone s apex, the emission anisotropy is given by [Pg.76]

Because the molecule s motion is restricted, the anisotropy does not decay to zero but reaches some final constant value, r . Equation 19 is typically used to model the anisotropy decay of a rod-shaped fluorophore such as l- 4-trimethylammomumphenyl)-6-phenyl-l,3,5-hexatriene (TMA-DPH) embedded in a phospholipid membrane, where it reports on the order and dynamics of the latter. The so-called order parameter S of the membrane is defined as [Pg.76]


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Anisotropy decays

Decay emissive

Emission anisotropy

Emission decay

Emission polarization

Excitation and emission

Excitation anisotropy

Excitation polarization

Excited emission and

Polar anisotropy

Polarization anisotropy

Polarization decays

Polarized emission

Polarized excitation

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