Concepts and experimental results related to molecular rectifiers and
transistors are reviewed. 'Devices' based on donor-sigma bridge-accept
or molecules. conjugated zwitterionic molecules, macrocyclic molecules
, metal clusters, fullerenes and carbon nanotubes are discussed. Curre
nt-voltage characteristics showing rectifier properties are presented,
as well as experiments in which the current-voltage characteristics a
re modulated by a gate voltage (transistor effect). (C) 1998 Elsevier
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