Solid state nuclear magnetic resonance最新文献

筛选
英文 中文
Ultra wideline dipolar NMR spectroscopy: Combining SEDOR and WURST-CPMG 超宽线双极性 NMR 光谱:结合 SEDOR 和 WURST-CPMG
IF 1.8 3区 化学
Solid state nuclear magnetic resonance Pub Date : 2024-07-01 DOI: 10.1016/j.ssnmr.2024.101948
Ulrich Rehfuß, Josef Maximilian Gerdes, Renato Grigolon Capelo, Danilo Manzani, Michael Ryan Hansen, Hellmut Eckert, L. van Wüllen
{"title":"Ultra wideline dipolar NMR spectroscopy: Combining SEDOR and WURST-CPMG","authors":"Ulrich Rehfuß, Josef Maximilian Gerdes, Renato Grigolon Capelo, Danilo Manzani, Michael Ryan Hansen, Hellmut Eckert, L. van Wüllen","doi":"10.1016/j.ssnmr.2024.101948","DOIUrl":"https://doi.org/10.1016/j.ssnmr.2024.101948","url":null,"abstract":"","PeriodicalId":21937,"journal":{"name":"Solid state nuclear magnetic resonance","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141848863","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A Numerical simulation method for analyzing 1H spin diffusion NMR for Multicomponent and multiphase polymer systems 分析多组分和多相聚合物系统 1H 自旋扩散 NMR 的数值模拟方法
IF 1.8 3区 化学
Solid state nuclear magnetic resonance Pub Date : 2024-06-26 DOI: 10.1016/j.ssnmr.2024.101946
Xuran Jin , Wei Chen
{"title":"A Numerical simulation method for analyzing 1H spin diffusion NMR for Multicomponent and multiphase polymer systems","authors":"Xuran Jin ,&nbsp;Wei Chen","doi":"10.1016/j.ssnmr.2024.101946","DOIUrl":"10.1016/j.ssnmr.2024.101946","url":null,"abstract":"<div><p>A numerical simulation method, namely, <em>SDNMR-WEBFIT</em>, is reported for simulating proton spin diffusion NMR based on the Levenberg-Marquardt algorithm and a pseudo-2D diffusion model. This method is used for the precise quantification of dynamics heterogeneity of the interphase within multiphase polymer systems. The numerical simulation method provides measurements of spin-lattice relaxation time (<em>T</em><sub>1</sub>), proton density (<em>ρ</em><sub>H</sub>), lamellar thickness (<em>d</em>), and spin diffusion coefficient (<em>D</em>) for each component. The pseudo-2D diffusion model is employed to simulate the proton spin diffusion build-up/decay curves, simultaneously calculating the lateral fraction of island-like structures (<em>x</em>-ratio). Such approach was successfully applied to various polymer systems, such as semi-crystalline polymer (Poly(ε-caprolactone), PCL), block copolymers (Styrene-butadiene-styrene triblock copolymer, SBS), and plasticized semi-polymers (Polvinyl alcohol, PVA).</p></div>","PeriodicalId":21937,"journal":{"name":"Solid state nuclear magnetic resonance","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2024-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141463757","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A combined solid-state 1H, 13C, 17O NMR and periodic DFT study of hyperfine coupling tensors in paramagnetic copper(II) compounds 顺磁铜(II)化合物中超细耦合张量的固态 1H、13C、17O NMR 和周期 DFT 综合研究。
IF 1.8 3区 化学
Solid state nuclear magnetic resonance Pub Date : 2024-06-25 DOI: 10.1016/j.ssnmr.2024.101945
Yizhe Dai , Victor Terskikh , Gang Wu
{"title":"A combined solid-state 1H, 13C, 17O NMR and periodic DFT study of hyperfine coupling tensors in paramagnetic copper(II) compounds","authors":"Yizhe Dai ,&nbsp;Victor Terskikh ,&nbsp;Gang Wu","doi":"10.1016/j.ssnmr.2024.101945","DOIUrl":"10.1016/j.ssnmr.2024.101945","url":null,"abstract":"<div><p>We report solid-state <sup>1</sup>H, <sup>13</sup>C, and <sup>17</sup>O NMR determination of hyperfine coupling tensors (<em>A</em>-tensors) in several paramagnetic Cu(II) (<em>d</em><sup>9</sup>, <em>S</em> = 1/2) complexes: <em>trans</em>-Cu(DL-Ala)<sub>2</sub>·H<sub>2</sub><sup>17</sup>O, Cu([1–<sup>13</sup>C]acetate)<sub>2</sub>·H<sub>2</sub>O, Cu([2–<sup>13</sup>C]acetate)<sub>2</sub>·H<sub>2</sub>O, and Cu(acetate)<sub>2</sub>·H<sub>2</sub><sup>17</sup>O. Using these new experimental results and some <em>A</em>-tensor data available in the literature for <em>trans</em>-Cu(L-Ala)<sub>2</sub> and K<sub>2</sub>CuCl<sub>4</sub>·2H<sub>2</sub>O, we were able to examine the accuracy of <em>A</em>-tensor computation from a periodic DFT method implemented in the BAND program. We evaluated <em>A</em>-tensors on <sup>1</sup>H (<em>I</em> = 1/2), <sup>13</sup>C (<em>I</em> = 1/2), <sup>14</sup>N (<em>I</em> = 1), <sup>17</sup>O (<em>I</em> = 5/2), <sup>39</sup>K (<em>I</em> = 3/2), <sup>35</sup>Cl (<em>I</em> = 3/2), and <sup>6</sup><sup><sup>3</sup></sup>Cu (<em>I</em> = 3/2) nuclei over a range spanning more than 3 orders of magnitude. We found that the BAND code can reproduce reasonably well the experimental results for both <em>A</em>-tensors and nuclear quadrupole coupling tensors.</p></div>","PeriodicalId":21937,"journal":{"name":"Solid state nuclear magnetic resonance","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2024-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0926204024000316/pdfft?md5=ae64e66e28bb0afa12d18d1f523805f6&pid=1-s2.0-S0926204024000316-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141538619","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Anisotropic relaxation of nuclear spins dipolar energy of water molecules in two-dimensional nanopores - A single crystal NMR study 二维纳米孔隙中水分子核自旋偶极能的各向异性弛豫--单晶体核磁共振研究
IF 1.8 3区 化学
Solid state nuclear magnetic resonance Pub Date : 2024-06-19 DOI: 10.1016/j.ssnmr.2024.101944
Alexander M. Panich , Jan Swenson
{"title":"Anisotropic relaxation of nuclear spins dipolar energy of water molecules in two-dimensional nanopores - A single crystal NMR study","authors":"Alexander M. Panich ,&nbsp;Jan Swenson","doi":"10.1016/j.ssnmr.2024.101944","DOIUrl":"https://doi.org/10.1016/j.ssnmr.2024.101944","url":null,"abstract":"<div><p>Energy transfer from Zeeman to dipolar order discovered by Jeener et al. is usually observed in solids with a strong dipole-dipole interaction of nuclear spins. It is not observed in liquids, where fast molecular motion completely averages this interaction. The intermediate case, when the dipole-dipole interaction of nuclear spins is only partially averaged, has been poorly studied. We report on the first measurement of an angular-dependent proton spin relaxation of a dipolar reservoir in mobile water molecules confined in the interlayer pores of a vermiculite single crystal. In this layered crystal, the intramolecular dipole-dipole interactions of nuclear spins are only partially averaged due to the restricted anisotropic molecular motion in nanopores. We show that this allows the formation of dipolar echo. We measured the spin-lattice relaxation times of the dipolar order <em>T</em><sub><em>1D</em></sub> at different angles between the normal to the crystal surface and the applied magnetic field and obtained a distinct angular dependence of <em>T</em><sub><em>1D</em></sub>. The minimum relaxation rate <em>R</em><sub><em>1D</em></sub> was found around the magic angle of 54.74°.</p></div>","PeriodicalId":21937,"journal":{"name":"Solid state nuclear magnetic resonance","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2024-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141438408","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Microscopic understanding of NMR signals by dynamic mean-field theory for spins 通过自旋动态平均场理论从微观角度理解核磁共振信号
IF 3.2 3区 化学
Solid state nuclear magnetic resonance Pub Date : 2024-05-24 DOI: 10.1016/j.ssnmr.2024.101936
Timo Gräßer , Thomas Hahn , Götz S. Uhrig
{"title":"Microscopic understanding of NMR signals by dynamic mean-field theory for spins","authors":"Timo Gräßer ,&nbsp;Thomas Hahn ,&nbsp;Götz S. Uhrig","doi":"10.1016/j.ssnmr.2024.101936","DOIUrl":"10.1016/j.ssnmr.2024.101936","url":null,"abstract":"<div><p>A recently developed dynamic mean-field theory for disordered spins (spinDMFT) is shown to capture the spin dynamics of nuclear spins very well. The key quantities are the spin autocorrelations. In order to compute the free induction decay (FID), pair correlations are needed in addition. They can be computed on spin clusters of moderate size which are coupled to the dynamic mean fields determined in a first step by spinDMFT. We dub this versatile approach non-local spinDMFT (nl-spinDMFT). It is a particular asset of nl-spinDMFT that one knows from where the contributions to the FID stem. We illustrate the strengths of nl-spinDMFT in comparison to experimental data for CaF<sub>2</sub>. Furthermore, spinDMFT provides the dynamic mean fields explaining the FID of the nuclear spins of <sup>13</sup>C in adamantane up to some static noise. The spin Hahn echo in adamantane is free from effects of static noise and agrees excellently with the spinDMFT results without further fitting.</p></div>","PeriodicalId":21937,"journal":{"name":"Solid state nuclear magnetic resonance","volume":null,"pages":null},"PeriodicalIF":3.2,"publicationDate":"2024-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0926204024000225/pdfft?md5=5c5e65aad81fd60774cb14a23ee84b0f&pid=1-s2.0-S0926204024000225-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141182730","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Automatic fitting of multiple-field solid-state NMR spectra 自动拟合多场固态 NMR 光谱
IF 3.2 3区 化学
Solid state nuclear magnetic resonance Pub Date : 2024-04-07 DOI: 10.1016/j.ssnmr.2024.101935
Frédéric A. Perras , Alexander L. Paterson
{"title":"Automatic fitting of multiple-field solid-state NMR spectra","authors":"Frédéric A. Perras ,&nbsp;Alexander L. Paterson","doi":"10.1016/j.ssnmr.2024.101935","DOIUrl":"https://doi.org/10.1016/j.ssnmr.2024.101935","url":null,"abstract":"<div><p>The NMR lineshapes produced by half-integer quadrupolar nuclei are sensitive to 11 distinct fit parameters per inequivalent site. To date, automatic fitting routines have failed to replace manual parameter insertion and evaluation due to the importance of local minima and the need for fitting multiple-field magic-angle spinning (MAS) and static spectra simultaneously. Herein we introduce a new tool, AMES-Fit (Automatic Multiple Experiment Simulation and Fitting), to automatically find the global best-fit simulation parameters for a series of multiple-field NMR lineshapes. AMES-Fit uses an adaptive step size random search algorithm to dynamically probe parameter space and requires minimal human input. The best fits are obtained in a few minutes of computation time that would otherwise have required several person-hours of work. The program is freely available and open-source.</p></div>","PeriodicalId":21937,"journal":{"name":"Solid state nuclear magnetic resonance","volume":null,"pages":null},"PeriodicalIF":3.2,"publicationDate":"2024-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140543926","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Solid-state NMR spectra of amino acid enantiomers and their relative intensities 氨基酸对映体的固态 NMR 光谱及其相对强度
IF 3.2 3区 化学
Solid state nuclear magnetic resonance Pub Date : 2024-04-01 DOI: 10.1016/j.ssnmr.2024.101925
Audrey-Anne Lafrance, Manon Girard, David L. Bryce
{"title":"Solid-state NMR spectra of amino acid enantiomers and their relative intensities","authors":"Audrey-Anne Lafrance,&nbsp;Manon Girard,&nbsp;David L. Bryce","doi":"10.1016/j.ssnmr.2024.101925","DOIUrl":"10.1016/j.ssnmr.2024.101925","url":null,"abstract":"<div><p>Under normal experimental conditions in an achiral environment, NMR spectra of enantiomers have chemical shifts and <em>J</em> couplings which are not differentiable. In this work, the reproducibility of spectral intensities for pairs of amino acid enantiomers, as well as factors influencing these intensities, is assessed using <sup>13</sup>C and <sup>15</sup>N cross-polarization magic-angle spinning (CP/MAS) NMR spectroscopy. Prompted by a recent literature debate over a possible influence of the chirality-induced spin selectivity (CISS) effect on spectral intensities obtained in CP/MAS NMR experiments carried out on enantiomers, a number of control experiments were performed with recycle delays of at least 5<em>T</em><sub>1</sub>. These included the analysis of proton-decoupled Bloch decay solid-state NMR spectra as well as solution NMR spectra where the cross polarization process is absent. Bloch decay and CP/MAS NMR spectra yield the same relative intensities for pairs of enantiomers while solution NMR spectra provide relative intensities closest to unity. Differences of plus-or-minus a few percent in the D/L spectral intensity ratios observed in all solid-state NMR experiments are due to sample preparation (i.e., grinding, particle size, partial amorphization) and limitations on sample purity. As previously described in the literature, more drastic intensity differences on the order of 50% are easily created by ball milling the samples. Finally, apodization is shown to invert the apparent D/L ratio in low signal-to-noise <sup>15</sup>N CP/MAS NMR spectra of aspartic acid enantiomers. In summary, no spectral intensity differences attributable to enantiomerism are identified.</p></div>","PeriodicalId":21937,"journal":{"name":"Solid state nuclear magnetic resonance","volume":null,"pages":null},"PeriodicalIF":3.2,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0926204024000110/pdfft?md5=14550f94457b1ce258b7efffa00efb7e&pid=1-s2.0-S0926204024000110-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140349354","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
14N NMR of magnetically oriented microcrystals 磁定向微晶的 14N NMR
IF 3.2 3区 化学
Solid state nuclear magnetic resonance Pub Date : 2024-03-26 DOI: 10.1016/j.ssnmr.2024.101924
Tomoya Kamide, Yasuto Noda, Kazuyuki Takeda
{"title":"14N NMR of magnetically oriented microcrystals","authors":"Tomoya Kamide,&nbsp;Yasuto Noda,&nbsp;Kazuyuki Takeda","doi":"10.1016/j.ssnmr.2024.101924","DOIUrl":"10.1016/j.ssnmr.2024.101924","url":null,"abstract":"<div><p><sup>14</sup>N NMR of magnetically oriented microcrystals is reported. With a home-built <sup>1</sup>H–<sup>13</sup>C–<sup>14</sup>N probe capable of modulating the rotation of the sample around the axis normal to the magnetic field, magnetically oriented microcrystal suspension (MOMS) of <span>l</span>-alanine is made. <sup>14</sup>N NMR spectra acquired with various timings during intermittent rotation lead to a rotation pattern of the MOMS similar to that of a single crystal. The effect of orientational distribution of the microcrystals to broadening of the resonance line is discussed.</p></div>","PeriodicalId":21937,"journal":{"name":"Solid state nuclear magnetic resonance","volume":null,"pages":null},"PeriodicalIF":3.2,"publicationDate":"2024-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140408046","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Double-rotation (DOR) NMR spectroscopy: Progress and perspectives 双旋转 (DOR) NMR 光谱:进展与展望
IF 3.2 3区 化学
Solid state nuclear magnetic resonance Pub Date : 2024-03-06 DOI: 10.1016/j.ssnmr.2024.101923
David L. Bryce
{"title":"Double-rotation (DOR) NMR spectroscopy: Progress and perspectives","authors":"David L. Bryce","doi":"10.1016/j.ssnmr.2024.101923","DOIUrl":"10.1016/j.ssnmr.2024.101923","url":null,"abstract":"<div><p>Double-rotation (DOR) solid-state NMR spectroscopy is a high-resolution technique developed in the late 1980s. Although multiple-quantum magic-angle spinning (MQMAS) became the most widely used high-resolution method for half-integer spin quadrupoles after 1995, development and application of DOR NMR to a variety of chemical and materials science problems has endured. This Trend article recapitulates the development of DOR NMR, discusses various applications, and describes possible future directions. The main technical limitations specific to DOR NMR are simply related to the size of the double rotor system. The relatively large outer rotor (and thus coil) used for most applications over the past 35 years translates into relatively low rotor spinning frequencies, a low filling factor, and weak radiofrequency powers available for excitation and for proton decoupling. Ongoing developments in NMR instrumentation, including ever-shrinking MAS rotors and spherical NMR rotors, could solve many of these problems and may augur a renaissance for DOR NMR.</p></div>","PeriodicalId":21937,"journal":{"name":"Solid state nuclear magnetic resonance","volume":null,"pages":null},"PeriodicalIF":3.2,"publicationDate":"2024-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0926204024000092/pdfft?md5=4bf8aebce516887aad8eff41ae32bdb9&pid=1-s2.0-S0926204024000092-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140057932","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Carbon-detected deuterium solid-state NMR rotating frame relaxation measurements for protein methyl groups under magic angle spinning 碳检测氘固态核磁共振旋转框架弛豫测量魔角旋转下的蛋白质甲基基团
IF 3.2 3区 化学
Solid state nuclear magnetic resonance Pub Date : 2024-02-22 DOI: 10.1016/j.ssnmr.2024.101922
Liliya Vugmeyster , Dmitry Ostrovsky , Riqiang Fu
{"title":"Carbon-detected deuterium solid-state NMR rotating frame relaxation measurements for protein methyl groups under magic angle spinning","authors":"Liliya Vugmeyster ,&nbsp;Dmitry Ostrovsky ,&nbsp;Riqiang Fu","doi":"10.1016/j.ssnmr.2024.101922","DOIUrl":"10.1016/j.ssnmr.2024.101922","url":null,"abstract":"<div><p>Deuterium rotating frame solid-state NMR relaxation measurements (<sup>2</sup>H <span><math><mrow><msub><mi>R</mi><mrow><mn>1</mn><mi>ρ</mi></mrow></msub></mrow></math></span>) are important tools in quantitative studies of molecular dynamics. We demonstrate how <sup>2</sup>H to <sup>13</sup>C cross-polarization (CP) approaches under 10–40 kHz magic angle spinning rates can be combined with the <sup>2</sup>H <span><math><mrow><msub><mi>R</mi><mrow><mn>1</mn><mi>ρ</mi></mrow></msub></mrow></math></span> blocks to allow for extension of deuterium rotating frame relaxation studies to methyl groups in biomolecules. This extension permits detection on the <sup>13</sup>C nuclei and, hence, for the achievement of site-specific resolution. The measurements are demonstrated using a nine-residue low complexity peptide with the sequence GGKGMGFGL, in which a single selective −<sup>13</sup>CD<sub>3</sub> label is placed at the methionine residue. Carbon-detected measurements are compared with the deuterium direct-detection results, which allows for fine-tuning of experimental approaches. In particular, we show how the adiabatic respiration CP scheme and the double adiabatic sweep on the <sup>2</sup>H and <sup>13</sup>C channels can be combined with the <sup>2</sup>H <span><math><mrow><msub><mi>R</mi><mrow><mn>1</mn><mi>ρ</mi></mrow></msub></mrow></math></span> relaxation rates measurement. Off-resonance <sup>2</sup>H <span><math><mrow><msub><mi>R</mi><mrow><mn>1</mn><mi>ρ</mi></mrow></msub></mrow></math></span> measurements are investigated in addition to the on-resonance condition, as they extent the range of effective spin-locking field.</p></div>","PeriodicalId":21937,"journal":{"name":"Solid state nuclear magnetic resonance","volume":null,"pages":null},"PeriodicalIF":3.2,"publicationDate":"2024-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139937507","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信