Tuning electron transfer through p-phenyleneethynylene molecular wires

Weak wire-like behavior - with a damping factor (beta) of 0.2 +/- 0.05 angstrom(-1) - has been found in a series of C-60 - wire - exTTF systems (i.e., p-phenyleneethynylene): these results contrast with previous observations involving p-phenylenevinylene systems.