First observation of excited triplet dimers with strong intramolecular interactions: planar binuclear phthalocyanines
Abstract
Zero field splitting parameters of planar binuclear phthalocyanines in the lowest excited triplet state have been obtained by using a time-resolved EPR method to show a delocalization of excitation over two phthalocyanine units for a homodimer and a contribution from a charge transfer configuration for a heterodimer.