Scanning Tunneling Microscopy and Spectroscopy of Novel Silver–Containing DNA Molecules

Natalie Fardian-Melamed, Gennady Eidelshtein, Dvir Rotem, Alexander Kotlyar*, Danny Porath

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

16 Scopus citations


The quest for a suitable molecule to pave the way to molecular nanoelectronics has been met with obstacles for over a decade. Candidate molecules such as carbon nanotubes lack the appealing trait of self-assembly, while DNA seems to lack the desirable feature of conductivity. Silver-containing poly(dG)–poly(dC) DNA (E-DNA) molecules have recently been reported as promising candidates for molecular electronics, owing to the selectivity of their metallization, their thin and uniform structure, their resistance to deformation, and their maximum possible high conductivity. Ultrahigh vacuum (UHV) scanning tunneling microscopy (STM) of E-DNA presents an elaborate high-resolution morphology characterization of these unique molecules, along with a detailed depiction of their electronic level structure. The energy levels found for E-DNA indicate a novel truly hybrid metal–molecule structure, potentially more conductive than other DNA-based alternatives.

Original languageEnglish
Article number1902816
JournalAdvanced Materials
Issue number35
StatePublished - Aug 2019


FundersFunder number
Israel Science Foundation1589/14


    • DNA derivatives
    • DNA-based nanoelectronics
    • STM
    • molecular electronics
    • scanning tunneling spectroscopy


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