DNP增强SSNMR与质子驱动的自旋扩散技术相结合,扩大了极化水平,已被应用于获取长程13C-13C关联,并获得了关于一系列聚合物和生物材料的有用的结构信息4。 最近,这项技术首次被用于在不使用同位素富集的情况下测定催化剂表面不同部分之间的空间接近性5。在最新的研究中,DNP增强测量是使用配备...
ssNMR 13C CPMAS dynamics phe residue statherin bind hydroxyapatite rel biomineralizationStayton, P SDrobny, G P
a semi-quantitative characterization of the predominant organic chemical structures and to compare the organic matter from permanently and seasonally flooded peatlands soils as well as to characterize the changes throughout the soil profile using principal component analysis (PCA) of 13C-SSNMR spectra....
The 13C-based multi-dimensional solid-state nuclear magnetic resonance (ssNMR) has been instrumental in revealing the structural information of plant cell walls through 2D and 3D correlation spectral analyses. However, the requirement of enriching plants with 13C limits the applicability of this ...
Wang, W. Q., Min, W., Liang, Z., Wang, L. Y., Chen, L. and Deng, F. (2003) NMR and parity violation: low temperature dependence in 1H CRAMPS and 13C CP/MAS ssNMR spectra of alanine enatiomer. Biophys. Chem., 103, 289-298....
为此,采用 13 C 固体核磁共振 ( SSNMR )技术分析了四氢呋喃( THF )水合物和 CH4 — THF 二元水合物的笼型结构特征,确定了后者的结构类型和客体分子分布 特征,并获得了后者客体分子的笼占有率和水合指数。实验结果表明: ①纯 THF 水合物的 2 个共振谱峰的化学位移分别为 δ68.3 和δ26.1 ,其 THF 分子...
The 13 C-based multi-dimensional solid-state nuclear magnetic resonance (ssNMR) has been instrumental in revealing the structural information of plant cell walls through 2D and 3D correlation spectral analyses. However, the requirement of enriching plants with 13 C limits the applicability of this ...
Assessment of cellulose interactions with water by ssNMR: 1H->13C transfer kinetics revisited 2022, Carbohydrate Polymers Citation Excerpt : The Iα and Iβ structures are associated, respectively, with a triclinic chain and two monoclinic chains (Sugiyama et al., 1991). Recent ssNMR studies ...
The process of obtaining sequential resonance assignments for heterogeneous polypeptides and large proteins by solid-state NMR (ssNMR) is impeded by extensive spectral degeneracy in these systems. Even in these challenging cases, the cross peaks are not distributed uniformly over the entire spectral wid...
13C J-coupling NMR rhodopsin chromophore double-quantum ssNMRLevitt, M H