127 I and 207 Pb Solid-State NMR Spectroscopy and Nuclear Spin Relaxation in PbI 2 : A Preliminary Study
127 I and 207 Pb Solid-State NMR Spectroscopy and Nuclear Spin Relaxation in PbI 2 : A Preliminary Study
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127 I 和 207 Pb 固态核磁共振波谱和 PbI 2 中的核自旋弛豫：初步研究
DOI：
10.1021/jp5023423
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发表时间：
2014
期刊：
影响因子：
--
通讯作者：
Dybowski, C.
中科院分区：
文献类型：
--
作者：
Taylor, R. E.;Beckmann, Peter A.;Bai, Shi;Dybowski, C.
碘化铅是一种具有多型性的层状结构。2H多型体含有高比率的碘空位，但保留其化学计量。这一特性使其在许多实际应用中具有潜在的用途。碘离子在空位间的跳跃是2H多型体的主要运动。我们在400 K以下对2H多型体进行了127 I和207 Pb的固体核磁共振谱和自旋晶格弛豫研究。我们提出了合理的模型的固体核磁共振结果的碘跳跃和晶格振动的影响。
Lead iodide is a layered structure that experiences polytypism. The 2H polytype contains high rates of iodine vacancies but retains its stoichiometry. This characteristic feature makes it potentially useful for many practical applications. The hopping of iodine ions among vacancies is the dominant motion in the 2H polytype. We present a preliminary127I and207Pb solid-state nuclear magnetic resonance (NMR) spectroscopy and spin–lattice relaxation study of the 2H polytype below 400 K. We present reasonable models for the solid-state NMR results in terms of the effects of iodine hopping and lattice vibrations.