Single-Molecule Junctions with Highly Improved Stability
نویسندگان
چکیده
Single-molecule junctions (SMJs) have been fabricated using layers generated by diazonium electroreduction. This process creates a C–Au covalent bond between the molecule and electrode. Rigid oligomers of variable length, based on porphyrin derivatives in their free base or cobalt complex forms, grafted surface. The conductance has studied scanning tunneling microscopy break junction (STM-bj) technique G(t) measurements, lifetime SMJs investigated. histograms indicate that charge transport porphyrins is relatively efficient influenced presence center. With both systems, random telegraph signals are easily recorded, showing SMJ on/off states. then stabilize exhibit surprisingly long around 10 s, attenuation plots, obtained STM-bj give identical values. work shows highly stable can be prepared grafting approach.
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ژورنال
عنوان ژورنال: Nano Letters
سال: 2021
ISSN: ['1530-6992', '1530-6984']
DOI: https://doi.org/10.1021/acs.nanolett.1c01747