Wavelength properties excited-state intramolecular

In these measurements, dynamic processes have been analyzed primarily by probing a transient absorption at one wavelength. In general, however, absorption spectra of excited states and chemical intermediates overlap each other. Furthermore, conformational change and orientational relaxation of the surrounding solvent molecules result in a time-dependence of the spectral band shape. For example, intramolecular exciplex systems give an absorption spectrum, the band shape of which is a function of solvent properties and delay times... 

---