DNP enhanced solid-state NMR – A powerful tool to address the surface functionalization of cellulose/paper derived materials

Abstract

This concept summarizes recent advances in development and application of DNP enhanced multinuclear solid-state NMR to study the molecular structure and surface functionalization of cellulose and paper-based materials. Moreover, a novel application is presented where DNP enhanced 13C and 15N solid-state NMR is used to identify structure moieties formed by cross-linking of hydroxypropyl cellulose. Given these two aspects of this concept-type of article, we thus combine both, a review on recent findings already published and unpublished recent data that complement the existing knowledge in the field of characterization of functional lignocellulosic materials by DNP enhanced solid-state NMR.

Keywords

• Hydroxypropyl cellulose
• Dynamic nuclear polarization
• Solid-state NMR
• Spin labelling
• Selective enhancement