Molecular Pseudorotation in Phthalocyanines as a Tool for Magnetic Field Control at the Nanoscale
Abstract
Metal phthalocyanines, a highly versatile class of aromatic, planar, macrocyclic molecules with a chelated central metal ion, are topical objects of ongoing research and particularly interesting due to their magnetic properties. However, while current focus lies almost exclusively on spin-Zeeman-related effects, the high symmetry of the molecule and its circular shape suggests the exploitation of light-induced excitation of twofold degenerate vibrational states in order to generate, switch and manipulate magnetic fields at the nanoscale. The underlying mechanism is a molecular pseudorotation that can be triggered by infrared pulses and gives rise to a quantized, small but controllable magnetic dipole moment. We investigate the optical stimulation of vibrationally-induced molecular magnetism and estimate changes in the magnetic shielding constants for confirmation by future experiments.
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Cite
@article{arxiv.2502.02169,
title = {Molecular Pseudorotation in Phthalocyanines as a Tool for Magnetic Field Control at the Nanoscale},
author = {Raphael Wilhelmer and Matthias Diez and Johannes K. Krondorfer and Andreas W. Hauser},
journal= {arXiv preprint arXiv:2502.02169},
year = {2025}
}
Comments
This is the final published version of the article, available Open Access under a CC-BY license. The supplementary information is The article was published in the Journal of the American Chemical Society on May 2024. DOI: https://doi.org/10.1021/jacs.4c01915 . The supplementary information is included at the end of the article