08 Fakultät Mathematik und Physik

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Author: search.filters.author.Wolf, Hans ChristophSubject: search.filters.subject.540

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    Energy transfer through conjugated polyenes
    (1989) Maier, Stefan; Port, Helmut; Wolf, Hans Christoph; Effenberger, Franz; Schlosser, Hubert
    From an analysis of absorption, fluorescence and excitation spectra of linear polyene molecules with 4 to 13 double bonds and one or two aromatic substituents at the chain ends we conclude that the aromatic substituents can be excited individually, and that intramolecular energy transfer from one end group via the polyene to the other end group is possible.
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    Synthesis and optical properties of terminally substituted conjugated polyenes
    (1988) Effenberger, Franz; Schlosser, Hubert; Bäuerle, Peter; Maier, Stefan; Port, Helmut; Wolf, Hans Christoph
    Long-chain, conjugated polyenes can function as molecular wires. This is shown by the photophysical properties of polyenes containing naphthyl, anthryl, and tetraphenylporphyrinyl (TPP) terminal groups. When the anthryl group in 1, which is obtainable by a sequence of Wittig reactions, is selectively excited, strong TPP emission is observed.
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    Terminally substituted conjugated polyenes : synthesis and energy transfer properties
    (1991) Effenberger, Franz; Wolf, Hans Christoph
    The present publication summarizes the results of our investigations on conjugated polyenes with different end groups. The spectroscopic data reveal the possibi~ity of a selective electronic end group excitation in the conjugated systems influenced by steric factors between the end groups and polyene chains. An intramolecular energy transfer from one excited terminal substituent to the other via the polyene chain is likely. The interruption of the conjugation in the polyenes by a bicycloalkane unit results in a separation of the molecules' spectroscopic behavior. Energy transfer is modified, but still present.