Picosecond spectroscopy of specific intermolecular interactions in dye solutions

Picosecond spectroscopy was used to investigate an intermolecular hydrogen bond between an impurity center and a solvent. The proposed method for determination of the spectral dependence of the rotational relaxation time of molecules was used to find the inhomogeneous broadening of the spectra of dye solutions governed by the impurity-solvent interaction. The influence of the microstructure of the environment on the rotation of molecules in binary solvents was observed. An investigation was made of the influence of temperature on the rate of formation and dissociation of complexes in an excited state.