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Structural analysis of silk using solid-state NMR 利用固态核磁共振对蚕丝进行结构分析
Magnetic Resonance Letters Pub Date : 2024-08-01 DOI: 10.1016/j.mrl.2024.200111
{"title":"Structural analysis of silk using solid-state NMR","authors":"","doi":"10.1016/j.mrl.2024.200111","DOIUrl":"10.1016/j.mrl.2024.200111","url":null,"abstract":"<div><p>Silkworms and spiders are capable of generating fibers that are both highly durable and elastic in a short span of time, using a silk solution stored within their bodies at room temperature and normal atmospheric pressure. The dragline silk fiber, which is essentially a spider's lifeline, surpasses the strength of a steel wire of equivalent thickness. Regrettably, humans have yet to replicate this process to produce fibers with similar high strength and elasticity in an eco-friendly manner. Therefore, it is of utmost importance to thoroughly comprehend the extraordinary structure and fibrillation mechanism of silk, and leverage this understanding in the manufacturing of high-strength, high-elasticity fibers. This review will delve into the recent progress in comprehending the structure of silks derived from silkworms and spiders, emphasizing the distinctive attributes of solid-state NMR.</p></div>","PeriodicalId":93594,"journal":{"name":"Magnetic Resonance Letters","volume":"4 3","pages":"Article 200111"},"PeriodicalIF":0.0,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772516224000184/pdfft?md5=783f24dbca2b3776c78218d44b40d76e&pid=1-s2.0-S2772516224000184-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139832045","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 of the retinal protonated Schiff base in microbial rhodopsins 微生物红蛋白中视网膜质子化希夫碱的固态核磁共振成像
Magnetic Resonance Letters Pub Date : 2024-08-01 DOI: 10.1016/j.mrl.2024.200132
{"title":"Solid-state NMR of the retinal protonated Schiff base in microbial rhodopsins","authors":"","doi":"10.1016/j.mrl.2024.200132","DOIUrl":"10.1016/j.mrl.2024.200132","url":null,"abstract":"<div><p>Rhodopsin is a seven-helical transmembrane protein with a retinal chromophore covalently bound to a conserved lysine in helix G via a retinal protonated Schiff base (RPSB). Microbial rhodopsins absorb light through chromophore and play a fundamental role in optogenetics. Numerous microbial rhodopsins have been discovered, contributing to diverse functions and colors. Solid-state NMR spectroscopy has been instrumental in elucidating the conformation of chromophores and the three-dimensional structure of microbial rhodopsins. This review focuses on the <sup>15</sup>N chemical shift values of RPSB and summarizes recent progress in the field. We displayed the correlation between the <sup>15</sup>N isotropic chemical shift values of RPSB and the maximum absorption wavelength of rhodopsin using solid-state NMR spectroscopy.</p></div>","PeriodicalId":93594,"journal":{"name":"Magnetic Resonance Letters","volume":"4 3","pages":"Article 200132"},"PeriodicalIF":0.0,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772516224000391/pdfft?md5=498b14a4e213885e68caec1c0a74709f&pid=1-s2.0-S2772516224000391-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140772197","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
0.05 T MRI for whole body 0.05 T 全身核磁共振成像
Magnetic Resonance Letters Pub Date : 2024-08-01 DOI: 10.1016/j.mrl.2024.200142
Ya Wang , Shihao Tang , Jinyu Yang , Bowen Peng , Yajie Xu , Xiaodong Yang
{"title":"0.05 T MRI for whole body","authors":"Ya Wang ,&nbsp;Shihao Tang ,&nbsp;Jinyu Yang ,&nbsp;Bowen Peng ,&nbsp;Yajie Xu ,&nbsp;Xiaodong Yang","doi":"10.1016/j.mrl.2024.200142","DOIUrl":"10.1016/j.mrl.2024.200142","url":null,"abstract":"","PeriodicalId":93594,"journal":{"name":"Magnetic Resonance Letters","volume":"4 3","pages":"Article 200142"},"PeriodicalIF":0.0,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772516224000494/pdfft?md5=754b62af136f05702fb418194497b61a&pid=1-s2.0-S2772516224000494-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141707988","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
Transient NOE driven signal enhancement of INADEQUATE solid-state NMR spectroscopy for the structural analysis of rubbers 用于橡胶结构分析的瞬态 NOE 驱动的 INADEQUATE 固态 NMR 光谱信号增强技术
Magnetic Resonance Letters Pub Date : 2024-08-01 DOI: 10.1016/j.mrl.2024.200118
{"title":"Transient NOE driven signal enhancement of INADEQUATE solid-state NMR spectroscopy for the structural analysis of rubbers","authors":"","doi":"10.1016/j.mrl.2024.200118","DOIUrl":"10.1016/j.mrl.2024.200118","url":null,"abstract":"<div><p>INADEQUATE (Incredible Natural Abundance DoublE QUAntum Transfer Experiment) is one of the most important techniques in revealing the carbon skeleton of organic solids in solid-state NMR spectroscopy. Nevertheless, its use for structural analysis is quite limited due to the low natural abundance of <sup>13</sup>C–<sup>13</sup>C connectivity (∼0.01%) and thus low sensitivity. Particularly, in semi-solids like rubbers, the sensitivity will be further significantly reduced by the inefficient cross polarization from <sup>1</sup>H to <sup>13</sup>C due to molecular motions induced averaging of <sup>1</sup>H–<sup>13</sup>C dipolar couplings. Herein, in this study, we demonstrate that transient nuclear Overhauser effect (NOE) can be used to efficiently enhance <sup>13</sup>C signals, and thus enable rapid acquisition of two-dimensional (2D) <sup>13</sup>C INADEQUATE spectra of rubbers. Using chlorobutyl rubber as the model system, it is found that an overall signal-to-noise ratio (SNR) enhancement about 22% can be achieved, leading to significant time-saving by about 33% as compared to the direct polarization-based INADEQUATE experiment. Further experimental results on natural rubber and ethylene propylene diene monomer (EPDM) rubber are also shown to demonstrate the robust performance of transient NOE enhanced INADEQUATE experiment.</p></div>","PeriodicalId":93594,"journal":{"name":"Magnetic Resonance Letters","volume":"4 3","pages":"Article 200118"},"PeriodicalIF":0.0,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772516224000251/pdfft?md5=ac2fd3d7b5bebfbc9415a8e29b0ed512&pid=1-s2.0-S2772516224000251-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140407124","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
Progress in in-situ electrochemical nuclear magnetic resonance for battery research 用于电池研究的原位电化学核磁共振的研究进展
Magnetic Resonance Letters Pub Date : 2024-05-01 DOI: 10.1016/j.mrl.2024.200099
Yong Jiang , Mengmeng Zhao , Zhangquan Peng , Guiming Zhong
{"title":"Progress in in-situ electrochemical nuclear magnetic resonance for battery research","authors":"Yong Jiang ,&nbsp;Mengmeng Zhao ,&nbsp;Zhangquan Peng ,&nbsp;Guiming Zhong","doi":"10.1016/j.mrl.2024.200099","DOIUrl":"10.1016/j.mrl.2024.200099","url":null,"abstract":"<div><p>A thorough understanding of the fundamental electrochemical and chemical processes in batteries is crucial to advancing energy density and power density. However, the characterizations of such processes are complex. <em>In-situ</em> electrochemical nuclear magnetic resonance (EC-NMR) offers the capability to collect real-time data during battery operation, furnishing insights into the local structures and ionic dynamics of materials by monitoring changes in the chemical environment around the nuclei. EC-NMR also has the advantages of being both quantitative and non-destructive. This paper systematically reviews the design of EC-NMR approach, and delves into the applications and progress of EC-NMR concerning battery reaction mechanisms, failure mechanisms, and overall battery systems. The review culminates in a comprehensive summary of the perspective and challenges associated with EC-NMR.</p></div>","PeriodicalId":93594,"journal":{"name":"Magnetic Resonance Letters","volume":"4 2","pages":"Article 200099"},"PeriodicalIF":0.0,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772516224000068/pdfft?md5=97c13b76f318d81093a8a661d1e11c2d&pid=1-s2.0-S2772516224000068-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139639732","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 reveals that oxygen tri-clusters make glass highly crack-resistant 固态 NMR 揭示三氧簇使玻璃具有高度抗裂性
Magnetic Resonance Letters Pub Date : 2024-05-01 DOI: 10.1016/j.mrl.2024.200098
Zhiwu Yu
{"title":"Solid-state NMR reveals that oxygen tri-clusters make glass highly crack-resistant","authors":"Zhiwu Yu","doi":"10.1016/j.mrl.2024.200098","DOIUrl":"10.1016/j.mrl.2024.200098","url":null,"abstract":"","PeriodicalId":93594,"journal":{"name":"Magnetic Resonance Letters","volume":"4 2","pages":"Article 200098"},"PeriodicalIF":0.0,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772516224000056/pdfft?md5=b4e2e9f02bbccbc9bcf26575f2911876&pid=1-s2.0-S2772516224000056-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139635460","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
Magnetic resonance imaging techniques for lithium-ion batteries: Principles and applications 锂离子电池的磁共振成像技术：原理与应用
Magnetic Resonance Letters Pub Date : 2024-05-01 DOI: 10.1016/j.mrl.2024.200113
Hongxin Lin , Yanting Jin , Mingming Tao , Yingao Zhou , Peizhao Shan , Danhui Zhao , Yong Yang
{"title":"Magnetic resonance imaging techniques for lithium-ion batteries: Principles and applications","authors":"Hongxin Lin ,&nbsp;Yanting Jin ,&nbsp;Mingming Tao ,&nbsp;Yingao Zhou ,&nbsp;Peizhao Shan ,&nbsp;Danhui Zhao ,&nbsp;Yong Yang","doi":"10.1016/j.mrl.2024.200113","DOIUrl":"10.1016/j.mrl.2024.200113","url":null,"abstract":"<div><p>Operando monitoring of internal and local electrochemical processes within lithium-ion batteries (LIBs) is crucial, necessitating a range of non-invasive, real-time imaging characterization techniques including nuclear magnetic resonance (NMR) techniques. This review provides a comprehensive overview of the recent applications and advancements of non-invasive magnetic resonance imaging (MRI) techniques in LIBs. It initially introduces the principles and hardware of MRI, followed by a detailed summary and comparison of MRI techniques used for characterizing liquid/solid electrolytes, electrodes and commercial batteries. This encompasses the determination of electrolytes' transport properties, acquisition of ion distribution profile, and diagnosis of battery defects. By focusing on experimental parameters and optimization strategies, our goal is to explore MRI methods suitable to a variety of research subjects, aiming to enhance imaging quality across diverse scenarios and offer critical physical/chemical insights into the ongoing operation processes of LIBs.</p></div>","PeriodicalId":93594,"journal":{"name":"Magnetic Resonance Letters","volume":"4 2","pages":"Article 200113"},"PeriodicalIF":0.0,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772516224000202/pdfft?md5=48b38f8e415aed88f9ec4cf3b6ad0607&pid=1-s2.0-S2772516224000202-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140270264","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
Structure and ion transport properties of organic ionic compounds revealed by NMR 核磁共振揭示有机离子化合物的结构和离子传输特性
Magnetic Resonance Letters Pub Date : 2024-05-01 DOI: 10.1016/j.mrl.2023.11.004
Haijin Zhu
{"title":"Structure and ion transport properties of organic ionic compounds revealed by NMR","authors":"Haijin Zhu","doi":"10.1016/j.mrl.2023.11.004","DOIUrl":"10.1016/j.mrl.2023.11.004","url":null,"abstract":"<div><p>Organic ionic plastic crystals (OIPCs) are emerging as an important material family for solid-state electrolytes and many other applications. They have significant advantages over conventional electrolyte materials, such as high ionic conductivity, non-flammability, and plasticity. Various nuclear magnetic resonance (NMR) spectroscopy techniques including solid-state NMR, pulsed-field gradient (PFG) NMR, and magnetic resonance imaging (MRI) etc., provide us a versatile toolkit to understand the fundamental level structures, molecular dynamics, and ionic interactions in these materials. This article reviews the commonly used NMR methods including solid- and solution-state NMR, PFG-NMR, dynamic nuclear polarization (DNP) and the application of these methods in revealing the microscopic level structures and ion-transport mechanisms in OIPC materials.</p></div>","PeriodicalId":93594,"journal":{"name":"Magnetic Resonance Letters","volume":"4 2","pages":"Article 100092"},"PeriodicalIF":0.0,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772516223000669/pdfft?md5=8ff57ef36b9bc0db45299aca7c697f16&pid=1-s2.0-S2772516223000669-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139022228","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
Ingenious liquid-observed vapor exchange (LOVE) NMR method revealing how sugars protect dry protein structure 揭示糖类如何保护干燥蛋白质结构的巧妙液体观察汽相（LOVE）核磁共振方法
Magnetic Resonance Letters Pub Date : 2024-05-01 DOI: 10.1016/j.mrl.2024.200114
Geying Ru , Conggang Li
{"title":"Ingenious liquid-observed vapor exchange (LOVE) NMR method revealing how sugars protect dry protein structure","authors":"Geying Ru ,&nbsp;Conggang Li","doi":"10.1016/j.mrl.2024.200114","DOIUrl":"10.1016/j.mrl.2024.200114","url":null,"abstract":"","PeriodicalId":93594,"journal":{"name":"Magnetic Resonance Letters","volume":"4 2","pages":"Article 200114"},"PeriodicalIF":0.0,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772516224000214/pdfft?md5=c15ff631ec185fdc8233a38990ed7e38&pid=1-s2.0-S2772516224000214-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140277249","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
A review of 17O isotopic labeling techniques for solid-state NMR structural studies of metal oxides in lithium-ion batteries 用于锂离子电池中金属氧化物固态核磁共振结构研究的 17O 同位素标记技术综述
Magnetic Resonance Letters Pub Date : 2024-05-01 DOI: 10.1016/j.mrl.2024.200120
Xiaoli Xia , Lei Zhu , Weiping Tang , Luming Peng , Junchao Chen
{"title":"A review of 17O isotopic labeling techniques for solid-state NMR structural studies of metal oxides in lithium-ion batteries","authors":"Xiaoli Xia ,&nbsp;Lei Zhu ,&nbsp;Weiping Tang ,&nbsp;Luming Peng ,&nbsp;Junchao Chen","doi":"10.1016/j.mrl.2024.200120","DOIUrl":"10.1016/j.mrl.2024.200120","url":null,"abstract":"<div><p>Recent advances in utilizing <sup>17</sup>O isotopic labeling methods for solid-state nuclear magnetic resonance (NMR) investigations of metal oxides for lithium-ion batteries have yielded extensive insights into their structural and dynamic details. Herein, we commence with a brief introduction to recent research on lithium-ion battery oxide materials studied using <sup>17</sup>O solid-state NMR spectroscopy. Then we delve into a review of <sup>17</sup>O isotopic labeling methods for tagging oxygen sites in both the bulk and surfaces of metal oxides. At last, the unresolved problems and the future research directions for advancing the <sup>17</sup>O labeling technique are discussed.</p></div>","PeriodicalId":93594,"journal":{"name":"Magnetic Resonance Letters","volume":"4 2","pages":"Article 200120"},"PeriodicalIF":0.0,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772516224000275/pdfft?md5=c845db7e79d7bca8a826ae673260b529&pid=1-s2.0-S2772516224000275-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140401389","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
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