Self-association and electron transfer in donor-acceptor dyads connected by meta-substituted oligomers

The synthesis of a new series of electron donor-acceptor conjugates in which the electron acceptor-[C.sub.60]-and the electron donor-[pi]-extended tetrathiafulvalene (exTTF)-are bridged by using m-phenyleneethynylene spacers of variable length is described. AFM spectroscopy is used for showing the ability of these new conjugates to form wirelike structures upon deposition onto a mica surface.