Mixed-valence compounds as polarizing agents for Overhauser dynamic nuclear polarization in solids

TL;DR

This study explores mixed-valence compounds as innovative polarizing agents for high-field Overhauser DNP in solids, combining theoretical and experimental approaches to demonstrate their effectiveness.

Contribution

It introduces mixed-valence compounds as a new class of polarizing agents capable of functioning effectively in solid-state DNP at ultra-high magnetic fields.

Findings

Mixed-valence compounds show persistent molecular mobility in solids.

They enable efficient Overhauser-DNP at ultra-high magnetic fields.

Theoretical and experimental results confirm their potential as polarizing agents.

Abstract

In this paper we investigate a novel set of polarizing agents -- mixed-valence compounds -- by theoretical and experimental methods and demonstrate their performance in high-field Dynamic Nuclear Polarization (DNP) experiments in the solid state. Mixed-valence compounds constitute a group of molecules, in which molecular mobility persists even in solids. Consequently, such polarizing agents can be used to perform Overhauser-DNP experiments in solid-state, with favorable conditions for dynamic nuclear polarization formation at ultra-high magnetic fields.