Tuning Single-Molecule Conductance in Metalloporphyrin-Based Wires via Supramolecular Interactions.

ABSTRACT: Nature has developed supramolecular constructs to deliver outstanding charge-transport capabilities using metalloporphyrin-based supramolecular arrays. Herein we incorporate simple, naturally inspired supramolecular interactions via the axial complexation of metalloporphyrins into the formation of a single-molecule wire in a nanoscale gap. Small structural changes in the axial coordinating linkers result in dramatic changes in the transport properties of the metalloporphyrin-based wire. The increased flexibility of a pyridine-4-yl-methanethiol ligand due to an extra methyl group, as compared to a more rigid 4-pyridinethiol linker, allows the pyridine-4-yl-methanethiol ligand to adopt an unexpected highly conductive stacked structure between the two junction electrodes and the metalloporphy

SUBMITTER: Aragones AC 

PROVIDER: S-EPMC7590179 | biostudies-literature | 2020 Oct

REPOSITORIES: biostudies-literature