Molecular complexes are promising candidates for spin applications spanning from magnetic resonance imaging to quantum information processing. A key challenge in advancing these applications is fundamentally understanding how to generate long spin relaxation times (T1, T2) in magnetic environments. A major problem to this challenge is the presence of other magnetic noise in the environment, also known as the spin bath. The presence of these nuclei causes the shortening of the spin relaxation times which is not ideal for applications. To address this issue, we chose to focus on the role of the nuclei on the ligand shell, which is not well known. Here we take a synthetic approach at fundamentally understanding the role of the ligand on a series of chlorinated Vanadium (IV) tris-catecholate complexes via substitutional patterning studies. The syntheses, characterization, and high-field, high frequency pulsed electronic paramagnetic resonance (EPR) spectroscopy data will be presented to understand the effect of the ligands patterning on the electronic spin of the metal.

Synthetic approach to understanding spin dynamics

ACS Spring 2022

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