Vibrational Dynamics of Aniline (N2)1 Clusters in Their First Excited Singlet State
Abstract
The vibrational dynamics of van der Waals (vdW) clusters have recently attracted considerable experimental and theoretical attention. The most extensively studied vdW clusters consist of a chromophore molecule and one or more solvent molecules. The cluster is excited by absorption of a photon to a chromophore vibronic state which can then relax by three different pathways: fluorescence or radiationless processes (intersystem crossing or internal conversion); intra cluster vibrational redistribution of the excess chromophore vibrational energy to the van der Waals modes (IVR); and vibrational predissociation (VP) if the chromophore vibrational energy is greater than the cluster binding energy. The first excited singlet state vibrational dynamics of aniline clusters are studied and compared to previous results o aniline. Intramolecular vibrational energy redistribution (IVR) and vibrational predissociation (VP) rates fall between the two extremes of the CH4 (fast IVR, slow VP) and Ar (slow IVR, fast VP) cluster results as is predicted by a serial IVR/VP model using Fermi's golden rule to describe IVR processes and a restricted RRKM theory to describe unimolecular VP rates.
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 04, 1992
- Accession Number
- ADA245812
Entities
People
- D. F. Kelley
- Elliot R. Bernstein
- M. F. Hineman
- S.K. Kim
Organizations
- Colorado State University