Photochemical mechanisms producing large fluorescence stokes shifts.
Various adiabatic photochemical mechanisms are compared which lead to a product in the excited state and therefore often to strongly red-shifted fluorescence. The applicational aspects of this strong red shift are outlined with respect to scinitillators, solar collectors, and biological fluorescence probese. As an example, the unusual fluorecence properties of a pyrazalocoumarin derivative are described.
W. Nernst Institute for Physical and Theoretical Chemistry, Humboldt-University, Berlin, Bunsenstr. 1, D-10117, Berlin, Germany.
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Vollmer
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Rettig
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Birckner