Excited State Energetics and Dynamics of Large Molecules, Complexes and Clusters
Abstract
New techniques for spectroscopy in supersonic expansions and in the development of specific supersonic sources were developed, including vacuum ultraviolet absorption spectroscopy in supersonic expansions, development of conical nozzles for supersonic jets and pulse extraction mass spectrometer. Research included studies of energetics of rydberg states of jet-cooled molecules, rydberg states of anthracene, intramolecular relaxation of rydberg states and interference effects between extravalence and intravalence molecular excitations. The rotational state dependence of intramolecular dynamics was investigated as well as the coupling between intrastate vibrational energy redistribution and interstate electronic relaxation and the coriolis rotation-vibration coupling and intramolecular dynamics. Mediated intersystem crossing phenomenology, inverse isotope effects and microscopic level shifts were explored. Studies of fluorescence quantum yields for highly-excited states of large molecules and photoisomerization dynamics of selected molecules were conducted, including an examination of energy-resolved photoisomerization rates and excited state energetics of van der Waals complexes and porphyrins. Large van der Waals complexes consisting of rare-gas (R) an atom(s) bound to a large aromatic molecule were studied by fluorescence excitation and by two-photon, two-color spectroscopy in conjunction with mass-resolved detection. Information on the coupling between intramolecular and intermolecular nuclear motion in complexes was obtained. Israel.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 01, 1988
- Accession Number
- ADA203514
Entities
People
- J. Jortner
Organizations
- Tel Aviv University