Abstract
Single needle-shaped crystals of oligophenylenevinylene (OPV) / perhydrotriphenylene (PHTP) inclusion compounds (IC) are investigated by polarized absorption and fluorescence spectroscopy. High dichroic ratios are detected, originating from head-to-tail orientations of the OPVs within the host lattice. The spectra of the ICs are red-shifted against solution, indicating the presence of planarization effects and / or head-tail-interactions, whereas side-by-side interactions can be excluded. Time-resolved fluorescence studies of two-component OPV/PHTP-ICs allow the determination of energy transfer (ET) efficiencies. The deactivation kinetics are simulated by Forster-type ET processes.
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