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.

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