Sen Sabyasachi
Department of Materials Science & Engineering, University of California at Davis, Davis, CA 95616, USA.
Prog Nucl Magn Reson Spectrosc. 2020 Feb;116:155-176. doi: 10.1016/j.pnmrs.2019.11.001. Epub 2019 Nov 12.
Dynamical NMR spectroscopy provides unique mechanistic understanding of the transport and relaxation processes in glass-forming liquids over timescales typically ranging from ~10 s to ~10 s, and thus has been used extensively in the past to study the dynamical behavior of polymeric and organic glass-forming liquids. However, reports in the literature of similar studies on inorganic glass-forming liquids have remained somewhat limited due to the experimental challenges. In this contribution we present a review of the high-temperature NMR spectroscopic studies of atomic and molecular dynamics in a wide variety of inorganic glass-forming liquids including oxides, halides and chalcogenides as well as select ionic liquids and molten salts. The significance of these dynamical processes in understanding the nature of the liquid-to-glass transition and their connection with the macroscopic transport properties of these liquids are discussed.
动态核磁共振光谱能够在通常从10⁻¹² 秒到10⁻⁶ 秒的时间尺度上，对玻璃形成液体中的传输和弛豫过程提供独特的机理理解，因此在过去被广泛用于研究聚合物和有机玻璃形成液体的动力学行为。然而，由于实验挑战，文献中关于无机玻璃形成液体的类似研究报告仍然有限。在本论文中，我们综述了高温核磁共振光谱对多种无机玻璃形成液体（包括氧化物、卤化物和硫属化物以及特定离子液体和熔盐）中原子和分子动力学的研究。讨论了这些动力学过程在理解液-玻璃转变本质及其与这些液体宏观传输性质的联系方面的重要性。
