Holl, NorbertPort, HelmutWolf, Hans ChristophStrobel, HartmutEffenberger, Franz2009-08-282016-03-312009-08-282016-03-311993312086091http://nbn-resolving.de/urn:nbn:de:bsz:93-opus-44516http://elib.uni-stuttgart.de/handle/11682/1186http://dx.doi.org/10.18419/opus-1169Absorption, fluorescence and excitation spectra of different terminally substituted polyenes have been recorded in the UV-Vis region. The observed intramolecular unidirectional energy transfer from a donor substituent to an acceptor at the other end of the chain is influenced but not inhibited by incorporation of a spacer into the polyene chain. In molecules without a spacer, internal conversion within the supermolecule can explain the observed transfer of energy. In molecules with a spacer interrupting the polyene chain the observed intramolecular energy transfer can be explained in terms of Förster transfer.eninfo:eu-repo/semantics/openAccessPolyene , Spacer , Energietransport <Mikrophysik>530article