Multinuclear and Solid State NMR of Gels

Nonappa, E. Kolehmainen

Research output: Chapter in Book/Report/Conference proceedingChapterScientificpeer-review

Abstract

Over the past six decades, nuclear magnetic resonance spectroscopy has been an integral part of synthetic organic and organometallic chemistry, as well as biochemistry. Beyond solution state experiments, increasing developments have opened new avenues to study materials in their solid state. Between two extremes (i.e., solution and solid), there exist several other forms of materials, especially soft materials such as gels and liquid crystals. Traditionally gels have been studied using solution state NMR spectroscopic methods. However, the viscosity of complex viscoelastic fluids such as gels affects the molecular tumbling, which in turn affects the chemical shift anisotropy and dipolar and quadrupolar interactions, resulting in broad spectral lines. Therefore, the importance of solid state (SS) NMR in understanding the structural details of self-assembled soft materials has remained unexplored for several decades. Nevertheless, promising results in understanding weak interactions in polymer gels have been explored using solid state cross polarization (CP) and high resolution (HR) magic angle spinning (MAS) NMR spectroscopy. However, similar studies and the possibility to utilize SS NMR spectroscopy to study hydro-and organogels derived from low molecular weight gelators have been limited until recently. In this chapter, we will focus on the application of SS NMR to study xerogels, aerogels and native gels with selected examples.

Original languageEnglish
Title of host publicationNMR and MRI of Gels
EditorsYves De Deene
PublisherRoyal Society of Chemistry
Chapter6
Pages200-227
Number of pages28
Edition23
ISBN (Electronic)978-1-78801-317-8
ISBN (Print)978-1-78801-152-5
DOIs
Publication statusPublished - 2020
MoE publication typeA3 Part of a book or another research book

Publication series

NameNew Developments in NMR
Number23
Volume2020-January
ISSN (Print)2044-253X
ISSN (Electronic)2044-2548

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