From Jabłoński To Femtoseconds. Evolution of Molecular Photophysics
M. Kasha
Institute of Molecular Biophysics, Florida State University, 451 MBB-4380, Tallahassee FL 32306-4380, U.S.A.
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A presentation is given, with retrospective commentary, on the experimental and theoretical contributions to key steps in the evolution of the framework of contemporary molecular photophysics from the Jablonski Diagram to femtosecond range excitation phenomena. The distinctive features of polyatomic molecules separating their behavior from atomic and diatomic molecules are emphasized. Justification is given for the statement that spin-orbital coupling with its relativistic component commonly dominates the molecular excitation dynamics of light-(low-Z)-atom molecules. The paper deals with single-photon, single-molecule excitations. Some examples of single-photon, multi-molecule and multi-photon, single-molecule excitation phenomena are listed. A selection of these is made to illustrate the prevalence of femtosecond excitation modes.
DOI: 10.12693/APhysPolA.95.15
PACS numbers: 33.50.-j, 33.50.Dq