Effect of Bond-Length Alternation in Molecular Wires

Abstract
Current−voltage (I−V) characteristics for metal−molecule−metal junctions formed from three classes of molecules measured with a simple crossed-wire molecular electronics test-bed are reported. Junction conductance as a function of molecular structure is consistent with I−V characteristics calculated from extended Hückel theory coupled with a Green's function approach, and can be understood on the basis of bond-length alternation.