Abstract

AbstractAn exceptionally brilliant strategy to miniaturize electronic devices is to employ a single‐molecule between two electrodes for carrier conduction at single‐molecule break junctions (SMBJ). To understand the intrinsic mechanisms of operation at these junctions, extremely crucial is to study physical, chemical, and electrochemical properties employing single‐molecules at SMBJs. Further, redox‐based transformations at the nano‐junction could be achieved electrochemically to allow efficient switching between different redox states of a single‐molecule, showcasing the possibility of maneuvering transport properties with on‐off states of the molecule. Herein, are presented the fundamentals of SMBJs, and the electrochemically influenced transformations or switching of organic molecules pursued at SMBJs. Such an understanding of electrochemical phenomena at the nanoscale dimension could bridge the knowledge gap between macroscopic electronic circuits and single‐molecule electronic circuits, whereby the feasibility of switching between the states could maneuver the electronic properties as well as other photophysical parameters.

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