Recent advances in dynamic nuclear polarization-enhanced NMR spectroscopy for organic polymers

Abstract

Dynamic nuclear polarization (DNP)-enhanced solid-state NMR spectroscopy has been emerged as a powerful analytical method for various materials in the last decade. It allows boosted sensitivity enhancement up to three orders of magnitude via microwave-derived polarization transfer from electrons to nuclear spins. While the applications of DNP NMR for biomolecules and inorganic materials were well-documented in a book and reviews, those for organic polymers have been less explored up to present. Recent progresses, particularly on the optimal sample preparation method for organic polymers, enabled the observation of dilute chemical species in polymers to be accessible. In this review, recent advances on DNP NMR of organic polymers are elaborated.