Magnetic Resonance Letters最新文献_第10页

Probe-assisted NMR: Recent progress on the surface study of crystalline metal oxides with various terminated facets 探针辅助NMR：具有不同端面的结晶金属氧化物表面研究的最新进展

Magnetic Resonance Letters Pub Date : 2022-02-01 DOI: 10.1016/j.mrl.2021.10.002

Yung-Kang Peng , Shik-chi Edman Tsang

引用次数: 19

NMR assignments and characterization of the DNA-binding domain of Arabidopsis transcription factor WRKY11 拟南芥转录因子WRKY11 dna结合域的NMR定位和表征

Magnetic Resonance Letters Pub Date : 2021-11-01 DOI: 10.1016/j.mrl.2021.09.001

Jiannan Wang , Yaling Lin , Qinjun Zhu , Jingfeng Zhang , Maili Liu , Yunfei Hu

引用次数: 2

Detecting water-protein chemical exchange in membrane-bound proteins/peptides by solid-state NMR spectroscopy 固态核磁共振波谱法检测膜结合蛋白/肽中的水-蛋白质化学交换

Magnetic Resonance Letters Pub Date : 2021-11-01 DOI: 10.1016/j.mrl.2021.09.002

Rongfu Zhang , Timothy A. Cross , Riqiang Fu

{"title":"Detecting water-protein chemical exchange in membrane-bound proteins/peptides by solid-state NMR spectroscopy","authors":"Rongfu Zhang , Timothy A. Cross , Riqiang Fu","doi":"10.1016/j.mrl.2021.09.002","DOIUrl":"https://doi.org/10.1016/j.mrl.2021.09.002","url":null,"abstract":"<div><p>Water plays an important role in many essential biological processes of membrane proteins in hydrated lipid environments. In general, the <sup>1</sup>H polarization transfers between water molecules and site-specific protons in proteins can be classified as coherent (via dipolar spin diffusion) and incoherent (via chemical exchange and nuclear Overhauser effect) transfers. Solid-state NMR is the technique of choice for studying such water-protein interactions in membrane-bound proteins/peptides through the detection of <sup>1</sup>H polarization transfers from water to the proteins. These polarization transfer mechanisms often exist simultaneously and are difficult to quantify individually. Here, we review water-protein polarization transfer techniques in solid-state NMR, with a focus on the recent progress for the direct detection of site-specific kinetic water-protein chemical exchange processes on the sub-millisecond time scale in membrane-bound proteins. The measurements of the pure chemical exchange kinetics provide a unique opportunity to understand the role that water plays in the structure-function relationships of membrane-bound species at the water-bilayer interface. In addition, the perspective of chemical exchange saturation transfer (CEST) experiments in membrane-bound proteins/peptides is further discussed.</p></div>","PeriodicalId":93594,"journal":{"name":"Magnetic Resonance Letters","volume":"1 2","pages":"Pages 99-111"},"PeriodicalIF":0.0,"publicationDate":"2021-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772516221000280/pdfft?md5=b9cdf1ca11c42048ff3a3ec37965b438&pid=1-s2.0-S2772516221000280-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72116182","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Study on ethylene/1-hexene copolymerization catalyzed by α-diimine nickel catalysts with different ligands 不同配体的α-二亚胺镍催化剂催化乙烯/1-己烯共聚反应的研究

Magnetic Resonance Letters Pub Date : 2021-11-01 DOI: 10.1016/j.mrl.2021.100022

Yusheng Xing, Haojie Yu, Li Wang, Nan Wang, Lei Zhu, Ruixue Liang, Md Alim Uddin

引用次数: 0

Two open metal sites on the same metal: Dynamics of CO2 in MOF UTSA-74 同一金属上的两个开放金属位点：MOF UTSA-74中CO2的动力学

Magnetic Resonance Letters Pub Date : 2021-11-01 DOI: 10.1016/j.mrl.2021.100023

Yingxian Li, Wanli Zhang, Yining Huang

{"title":"Two open metal sites on the same metal: Dynamics of CO2 in MOF UTSA-74","authors":"Yingxian Li, Wanli Zhang, Yining Huang","doi":"10.1016/j.mrl.2021.100023","DOIUrl":"10.1016/j.mrl.2021.100023","url":null,"abstract":"<div><p>Metal-organic frameworks (MOFs) are an emerging class of porous materials with many unique properties that make them promising candidates for carbon dioxide (CO<sub>2</sub>) capture and storage. A better understanding of the behavior of CO<sub>2</sub> adsorbed inside MOF will enable researchers to develop the ability of designing new MOF based materials with high CO<sub>2</sub> adsorption capabilities. It is well known that presence of open metal sites (OMSs) can greatly enhance the gas adsorption capability of MOFs. MOF UTSA-74, a framework isomer of well-known MOF-74 has a unique feature that upon activation, a single metal ion has two OMSs. Therefore, it presents a unique opportunity to probe the dynamics of CO<sub>2</sub> molecules adsorbed on these OMSs. In this work, the CO<sub>2</sub> adsorptive properties of MOF UTSA-74 are examined with particular attention being paid to the dynamics of the CO<sub>2</sub> adsorbed on these OMSs. Specifically, variable temperature <sup>13</sup>C static solid-state nuclear magnetic resonance (SSNMR) experiments were conducted to directly monitor the behavior of <sup>13</sup>CO<sub>2</sub> in UTSA-74 at different loadings. All CO<sub>2</sub> molecules undergo localized wobbling. At low loadings, some CO<sub>2</sub> molecules jump among three OMSs from three different Zn atoms in the cross-section of the channel. Others hop back and forth between the two neighboring OMSs. At high loading, the three-site jump has ceased, but two-site hopping persists. The dynamical behavior of CO<sub>2</sub> in UTSA-74 results from the unique Zn coordination environment. It was discovered that CO<sub>2</sub> is less mobile in UTSA-74 than in its framework isomer, MOF-74-Zn.</p></div>","PeriodicalId":93594,"journal":{"name":"Magnetic Resonance Letters","volume":"1 2","pages":"Pages 121-130"},"PeriodicalIF":0.0,"publicationDate":"2021-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.mrl.2021.100023","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49174846","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

NMR signal separation of ionic liquids by poly(sodium-p-styrenesulfonate)-assisted chromatographic NMR spectroscopy 用聚对苯乙烯磺酸钠辅助色谱核磁共振波谱法分离离子液体的核磁共振信号

Magnetic Resonance Letters Pub Date : 2021-11-01 DOI: 10.1016/j.mrl.2021.100007

Kui Yan , Zhengwu Bai , Shaohua Huang

{"title":"NMR signal separation of ionic liquids by poly(sodium-p-styrenesulfonate)-assisted chromatographic NMR spectroscopy","authors":"Kui Yan , Zhengwu Bai , Shaohua Huang","doi":"10.1016/j.mrl.2021.100007","DOIUrl":"10.1016/j.mrl.2021.100007","url":null,"abstract":"<div><p>Diffusion-ordered nuclear magnetic resonance spectroscopy (DOSY), dubbed chromatographic NMR spectroscopy, can be used to simultaneously distinguish and identify the structures of components in a mixture according to their different diffusion coefficients. In order to improve the resolution of DOSY on the diffusion dimension, a lot of matrices have been developed to expand the application of this technique in mixture analysis. However, there is no matrix to detect the mixture of ionic liquids (ILs). Herein, we introduced a new matrix, poly(sodium-p-styrenesulfonate) (PSSNa), which can be used to fully separate the signals of a mixture of different ILs. The mixture of three imidazolium ILs of 1-butyl-3-methylimidazolium bromide, 1-allyl-3-vinylimidazolium bromide and 1-carboxymethyl-3-methylimidazolium chloride could be fully distinguished by virtue of their different interactions with PSSNa. We also investigated the influences of PSSNa amount, IL concentration and solution pH value on the signal resolution of mixtures. This work provides a scientific reference for the analysis of the other IL analytes.</p></div>","PeriodicalId":93594,"journal":{"name":"Magnetic Resonance Letters","volume":"1 2","pages":"Pages 153-159"},"PeriodicalIF":0.0,"publicationDate":"2021-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.mrl.2021.100007","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49259467","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Nuclear magnetic resonance studies of organic-inorganic composite solid electrolytes 有机-无机复合固体电解质的核磁共振研究

Magnetic Resonance Letters Pub Date : 2021-11-01 DOI: 10.1016/j.mrl.2021.10.004

Xueyan Zhang, Hua Huo

{"title":"Nuclear magnetic resonance studies of organic-inorganic composite solid electrolytes","authors":"Xueyan Zhang, Hua Huo","doi":"10.1016/j.mrl.2021.10.004","DOIUrl":"10.1016/j.mrl.2021.10.004","url":null,"abstract":"<div><p>Solid electrolytes have received widespread attention due to their higher safety than liquid electrolytes in the past decades. In particular, organic-inorganic composite solid electrolytes (CSEs) in which inorganic fillers dispersed in polymer solid electrolytes are considered to be one of the most promising candidate electrolytes for high-performance solid-state lithium batteries. Understanding the local environments and the conduction pathway/dynamics of Li<sup>+</sup> is essential for the design of high-performance CSEs. Nuclear magnetic resonance (NMR) is a non-invasive quantitative technique that has unique capabilities in providing molecular structure information, morphological evolution, and measuring the movement of ions at different time scales. Therefore, for battery researchers, an accurate and comprehensive understanding of the basic principles and experimental design of solid-state NMR (SSNMR) is of great significance for investigating the abundant molecular structure and dynamics information in CSEs. The specific applications of the SSNMR technique in CSEs are briefly introduced in this present review.</p></div>","PeriodicalId":93594,"journal":{"name":"Magnetic Resonance Letters","volume":"1 2","pages":"Pages 142-152"},"PeriodicalIF":0.0,"publicationDate":"2021-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772516221000346/pdfft?md5=4f09512b647750ec34810887e9ce0649&pid=1-s2.0-S2772516221000346-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44213427","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Evaluation of injuries caused by coronavirus disease 2019 using multi-nuclei magnetic resonance imaging 多核磁共振成像评价2019冠状病毒病损伤

Magnetic Resonance Letters Pub Date : 2021-08-01 DOI: 10.1016/j.mrl.2021.100009

Qian Zhou , Qiuchen Rao , Haidong Li , Ming Zhang , Xiuchao Zhao , Lei Shi , Chaohui Ye , Xin Zhou

{"title":"Evaluation of injuries caused by coronavirus disease 2019 using multi-nuclei magnetic resonance imaging","authors":"Qian Zhou , Qiuchen Rao , Haidong Li , Ming Zhang , Xiuchao Zhao , Lei Shi , Chaohui Ye , Xin Zhou","doi":"10.1016/j.mrl.2021.100009","DOIUrl":"10.1016/j.mrl.2021.100009","url":null,"abstract":"<div><p>The ongoing pandemic of coronavirus disease 2019 (COVID-19) has been a great burden for the healthcare system in many countries because of its high transmissibility, severity, and fatality. Chest radiography and computed tomography (CT) play a vital role in the diagnosis, detection of complications, and prognostication of COVID-19. Additionally, magnetic resonance imaging (MRI), especially multi-nuclei MRI, is another important imaging technique for disease diagnosis because of its good soft tissue contrast and the ability to conduct structural and functional imaging, which has also been used to evaluate COVID-19-related organ injuries in previous studies. Herein, we briefly reviewed the recent research on multi-nuclei MRI for evaluating injuries caused by COVID-19 and the clinical <sup>1</sup>H MRI techniques and their applications for assessing injuries in lungs, brain, and heart. Moreover, the emerging hyperpolarized <sup>129</sup>Xe gas MRI and its applications in the evaluation of pulmonary structures and functional abnormalities caused by COVID-19 were also reviewed.</p></div>","PeriodicalId":93594,"journal":{"name":"Magnetic Resonance Letters","volume":"1 1","pages":"Pages 2-10"},"PeriodicalIF":0.0,"publicationDate":"2021-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.mrl.2021.100009","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46926929","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Solid-state NMR in the field of drug delivery: State of the art and new perspectives 固体核磁共振在药物递送领域的应用：最新技术和新视角

Magnetic Resonance Letters Pub Date : 2021-08-01 DOI: 10.1016/j.mrl.2021.100003

Alessandro Marchetti , Jinglin Yin , Yongchao Su , Xueqian Kong

引用次数: 8

Characterization of the acidity and basicity of green solvents by NMR techniques 绿色溶剂酸碱性的核磁共振表征

Magnetic Resonance Letters Pub Date : 2021-08-01 DOI: 10.1016/j.mrl.2021.100001

Kemeng Shi , Christian Marcus Pedersen , Hui Chang , Jing Shi , Yingxiong Wang , Yan Qiao

引用次数: 10