(496c) Instrumentation and Strategies for Hyperpolarized NMR Spectroscopy

The materials research community requires measurement techniques capable of probing relationships between structures and dynamics across variable length and time scales. Nuclear magnetic resonance (NMR) spectroscopy is particularly well-suited for its dynamics measurements but suffers from inherent sensitivity limitations. This work aims to overcome these limitations through new instrumentation and methods for nuclear hyperpolarization. Here, we describe the design and operation of a parallel electron paramagnetic resonance and NMR spectrometer uniquely suited for elucidating mechanisms of hyperpolarization transfer and collecting spectra of exceptionally short-lived nuclear and electronic signals. This instrument enabled quantization of electronic spin dynamics of triplet states incorporated into the linkers of metal-organic frameworks and successful transfer of polarization to nearby nuclei. This polarization transfer enables study of rarely observed phenomena in this class of materials, such as location of defect sites, that advance the materials field.