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Hard–Soft Chemistry Design Principles for Predictive Assembly of Single Molecule-Metal Junctions by Hannah E. Skipper; Claire V. May; Arnold L. Rheingold; Linda H. Doerrer; Maria Kamenetska is a Chemistry article available to read on EtoBox.

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The achievement of atomic control over the organic-inorganic interface is key to engineering electronic and spintronic properties of molecular devices. We leverage insights from inorganic chemistry to create hard-soft acid-base (HSAB) theory-derived design principles for incorporation of single molecules onto metal electrodes. A single molecule circuit is assembled via a bond between an organic backbone and an under-coordinated metal atom of the electrode surface, typically Au. Here, we study molecular composition factors affecting the junction assembly of coordination complexes containing transition metals atoms on Au electrodes. We employ hetero- and homobimetallic lantern complexes and systematically change the coordination environment to vary the character of the intramolecular bonds relative to the electrode-molecule interaction. We observe that trends in the robustness and chemical selectivity of single molecule junctions formed with a range of linkers correlate with HSAB principles, which have traditionally been used to guide atomic arrangements in the synthesis of coordination complexes. We find that this similarity between the intermolecular electrode-molecule bonding in a

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Author

Hannah E. Skipper; Claire V. May; Arnold L. Rheingold; Linda H. Doerrer; Maria Kamenetska

Publisher

American Chemical Society (ACS)

Published

2021

Language

EN

Field

Chemistry (Physical Sciences)