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| - Ultrafast Optical Kerr Effect and Solvation Dynamics of Liquid Aniline
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| - Femtosecond optically heterodyne detected optical Kerr effect(OHD-OKE) measurements have been madeon liquid aniline. These are contrasted with solvation dynamicsmeasurements made earlier. The OHD-OKE data in the frequency domain can be analyzed in terms of threecomponents: a low-frequency diffusionalpart; a collisional part; an underdamped intermolecular mode. Thelatter is quite intense, suggesting strongintermolecular interactions and a relatively high degree of structurein liquid aniline. When the solvationdynamics calculated from the pure liquid data are compared with thosemeasured directly, the agreementbeyond 1 ps is good. This result suggests that it is possible touse experimental data obtained on the puresolvent dynamics to model the solvation dynamics response.However, the agreement is not as good at veryearly times. While this may simply reflect the lower timeresolution of solvation dynamics experimentscompared to OHD-OKE experiments, we speculate that the differencescould also result from either fundamentaldifferences in the measured solvation dynamics and those calculatedfrom OHD-OKE data or a perturbationof the intermolecular interactions in liquid aniline by thesolute.
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