Synthesis and comparative charge transfer studies in porphyrin–fullerene dyads: mode of attachment effect

Abstract

Two types of dyads having different modes of attachment <italic>i.e.</italic> cyclopropanation <italic>vs.</italic> pyrrolidine type in porphyrin–fullerene linked systems are compared for their photophysical properties. Dyad II with pyrrolidine type of linkage shows faster charge separation and generation of long lived charge separated states. It also shows a new property of thermally activated electrical conductivity which makes it potential candidate for organic electronic devices.