Two-Terminal Molecular Memory through Reversible Switching of Quantum Interference Features in Tunneling Junctions

Marco Carlotti, Saurabh Soni, Sumit Kumar, Yong Ai, Eric Sauter, Michael Zharnikov, Ryan C. Chiechi*

*Bijbehorende auteur voor dit werk

OnderzoeksoutputAcademicpeer review

20 Citaten (Scopus)
203 Downloads (Pure)


Large-area molecular tunneling junctions comprising self-assembled monolayers of redox-active molecules are described that exhibit two-terminal bias switching. The as-prepared monolayers undergo partial charge transfer to the underlying metal substrate (Au, Pt, or Ag), which converts their cores from a quinoid to a hydroquinoid form. The resulting rearoniatization converts the bond topology from a cross-conjugated to a linearly conjugated pi system. The cross-conjugated from correlates to the appearance of an interference feature in the transmission spectrum that vanishes for the linearly conjugated form. Owing to the presence of electron-withdrawing nitrile groups, the reduction potential and the interference feature lie close to the work function and Fermi level of the metallic substrate. We exploited the relationship between conjugation patterns and quantum interference to create nonvolatile memory in prow-devices using eutectic Gain as the top contact.

Originele taal-2English
Pagina's (van-tot)15681-15685
Aantal pagina's5
TijdschriftAngewandte Chemie International Edition
Nummer van het tijdschrift48
Vroegere onlinedatum27-sep-2018
StatusPublished - 26-nov-2018

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