Journal article

Long-Range Surface-Assisted Molecule-Molecule Hybridization

Marina Castelli, Jack Hellerstedt, Cornelius Krull, Spiro Gicev, Lloyd CL Hollenberg, Muhammad Usman, Agustin Schiffrin

SMALL | WILEY-V C H VERLAG GMBH | Published : 2021


Metalated phthalocyanines (Pc's) are robust and versatile molecular complexes, whose properties can be tuned by changing their functional groups and central metal atom. The electronic structure of magnesium Pc (MgPc)-structurally and electronically similar to chlorophyll-adsorbed on the Ag(100) surface is investigated by low-temperature scanning tunneling microscopy and spectroscopy, non-contact atomic force microscopy, and density functional theory. Single, isolated MgPc's exhibit a flat, fourfold rotationally symmetric morphology, with doubly degenerate, partially populated (due to surface-to-molecule electron transfer) lowest unoccupied molecular orbitals (LUMOs). In contrast, MgPc's with..

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Awarded by Australian Research Council (ARC)

Funding Acknowledgements

A.S. acknowledges support from the Australian Research Council (ARC) Future Fellowship scheme (FT150100426). M.C. acknowledges support from the Monash Centre of Atomically Thin Materials (MCATM), and the ARC Centre of Excellence in Future Low-Energy Electronics Technologies (FLEET). The computational resources for this work were provided by the National Computing Infrastructure (NCI) and Pawsey Supercomputing Center through National Computational Merit Allocation Scheme (NCMAS). S.G., L.H., and M.U. acknowledge useful discussions with Charles Hill (The University of Melbourne).