Proceedings of nanoGe September Meeting 2015 (NFM15)
Publication date: 8th June 2015
Examinations of transport and charge transfer in molecular systems using man made metal probes underpin not only fundamental developments in our understanding of electron transfer and transport but also a vast array of energy capture, data storage, sensors and related or based electronic and electrochemistry technologies. In this work it is presented a capacitive analysis at man made molecular interfaces showing it enables a clean mapping of both the thermodynamic and kinetic characteristics in a single probe time-dependent experimental run. The methodology enables a rapid and undistorted quantification of accessible molecular quantum states and its density (reported directly from the quantum capacitive term), molecular surface coverage and electron transfer kinetics with little experimental effort comparatively to those of classical two-electrode non-equilibrium approaches. Exemplified here with ferrocene mesoscopic molecular and double stranded DNA films the method is equally applicable to any molecularly confined electron active interface and constitute an open avenue to advances and on the understanding of molecular and biomolecular electronics and electrochemistry with demonstrated applications in diagnostic devices.
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