Applied Magnetic Resonance最新文献

New Facets of Magnetic Resonance Applications 磁共振应用的新方面

IF 1 4区物理与天体物理

Applied Magnetic Resonance Pub Date : 2023-09-09 DOI: 10.1007/s00723-023-01614-y

V. I. Chizhik, M. S. Tagirov

引用次数: 0

Diastereomers of Cyclopropa[a]pyrrolizine Spiro-fused with a Benzo[4,5]imidazo[1,2-a]indole Fragment: Structure Determinations Using NMR Methods 环丙[a]吡咯利嗪与苯并[4,5]咪唑[1,2-a]吲哚片段的非对映体:核磁共振结构测定

IF 1 4区物理与天体物理

Applied Magnetic Resonance Pub Date : 2023-08-28 DOI: 10.1007/s00723-023-01608-w

Yulia A. Pronina, Alexander V. Stepakov, Ekaterina A. Popova, Vitali M. Boitsov, Ruslan I. Baichurin, Stanislav I. Selivanov

{"title":"Diastereomers of Cyclopropa[a]pyrrolizine Spiro-fused with a Benzo[4,5]imidazo[1,2-a]indole Fragment: Structure Determinations Using NMR Methods","authors":"Yulia A. Pronina, Alexander V. Stepakov, Ekaterina A. Popova, Vitali M. Boitsov, Ruslan I. Baichurin, Stanislav I. Selivanov","doi":"10.1007/s00723-023-01608-w","DOIUrl":"10.1007/s00723-023-01608-w","url":null,"abstract":"<div>NMR spectroscopy methods have been used to prove structures of two diastereomers of cyclopropa[a]pyrrolizine spiro-fused with a benzo[4,5]imidazo[1,2-a]indole fragment which were obtained through a three-component 1,3-dipolar cycloaddition reaction and isolated in a ratio of 6:1. Complete signal assignment in 1H and 13C spectra of each compound was made by using some homonuclear (COSY, NOESY) and heteronuclear (HMQC, HMBC) NMR experiments. The spatial structure of the studied diastereomers was proved on the basis of data on interproton through-space interactions obtained from the NOESY spectra at a mixing time of 0.5 s. The comparison of the experimental and calculated values of the vicinal constants and interproton distances indicates that each of the studied diastereomers in solution is characterized by a fast (in the NMR time scale) conformational equilibrium due to the inversion of the nitrogen atom in the cyclopropa[a]pyrrolizine fragment.</div>","PeriodicalId":469,"journal":{"name":"Applied Magnetic Resonance","volume":"54 10","pages":"999 - 1014"},"PeriodicalIF":1.0,"publicationDate":"2023-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"6720263","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Time-Domain NMR Techniques in Cellulose Structure Analysis 纤维素结构分析的时域核磁共振技术

IF 1 4区物理与天体物理

Applied Magnetic Resonance Pub Date : 2023-08-27 DOI: 10.1007/s00723-023-01600-4

Leonid Grunin, Maria Ivanova, Veronika Schiraya, Tatiana Grunina

{"title":"Time-Domain NMR Techniques in Cellulose Structure Analysis","authors":"Leonid Grunin, Maria Ivanova, Veronika Schiraya, Tatiana Grunina","doi":"10.1007/s00723-023-01600-4","DOIUrl":"10.1007/s00723-023-01600-4","url":null,"abstract":"<div>The role of cellulose in various applications is remarkably going up in recent decades as it is a renewable material for wide areas of applications that can be delivered in huge quantities. This drives permanently growing interest to development of sensors for processing industry, that can give fast and reliable information about physicochemical structure of cellulosic materials. In this framework, Time-Domain NMR with its capability to be miniaturized may become very attractive to measure such structural parameters as crystallinity, domain sizes, and sorption properties. This contribution is aimed to summarize existing NMR relaxometric methods and update them with the techniques of signal processing and pulse sequences like Magic Sandwich Echo or multiple quantum transitions, that are well established for synthetic polymers, but still have not been extensively used for polysaccharides. Here, we also demonstrate our own results of cellulose study trying to contribute to the promotion of Time-Domain NMR applicability to biopolymers.</div>","PeriodicalId":469,"journal":{"name":"Applied Magnetic Resonance","volume":"54 10","pages":"929 - 955"},"PeriodicalIF":1.0,"publicationDate":"2023-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s00723-023-01600-4.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"6720269","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Two Magnon Scattering Contribution to the Ferromagnetic Resonance Linewidth of Pt(Ir)/CoFeTaB/Ir(Pt) Thin Films 双磁振子散射对Pt(Ir)/CoFeTaB/Ir(Pt)薄膜铁磁共振线宽的贡献

IF 1 4区物理与天体物理

Applied Magnetic Resonance Pub Date : 2023-08-23 DOI: 10.1007/s00723-023-01601-3

M. Tokaç, S. Kazan, B. Özkal, N. Al-jawfi, B. Rameev, B. Nicholson, A. T. Hindmarch

{"title":"Two Magnon Scattering Contribution to the Ferromagnetic Resonance Linewidth of Pt(Ir)/CoFeTaB/Ir(Pt) Thin Films","authors":"M. Tokaç, S. Kazan, B. Özkal, N. Al-jawfi, B. Rameev, B. Nicholson, A. T. Hindmarch","doi":"10.1007/s00723-023-01601-3","DOIUrl":"10.1007/s00723-023-01601-3","url":null,"abstract":"<div>The magnetic properties of Pt/CoFeTaB/Ir and Ir/CoFeTaB/Pt trilayer thin films have been studied using angular- and temperature-dependent ferromagnetic resonance. This enables quantitative determination of the various contributions to the magnetic behavior, including separating, the effective Gilbert damping, inhomogeneous damping, and two-magnon-scattering contributions to the magnetic dissipation. As-deposited films show behavior consistent with significant incorporation of Ir into CoFeTaB only when the Ir layer is deposited first. Annealing of the structures at (300,^{circ } hbox {C}) causes only minor structural and magnetic modification when Pt is deposited first, and more pronounced changes, attributed to thermally-driven out-diffusion of Ir from CoFeTaB, are found when Ir is deposited first. A holistic consideration of the magnetic resonance behavior can provide detailed information on the atomic-scale structure in magnetic thin-film devices.</div>","PeriodicalId":469,"journal":{"name":"Applied Magnetic Resonance","volume":"54 10","pages":"1053 - 1064"},"PeriodicalIF":1.0,"publicationDate":"2023-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s00723-023-01601-3.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"6720268","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Homo- and Heteronuclear NMR Methods for Signal Assignments in 1H and 13C Spectra of 1-Aminoacyloxygermatran 1-氨基酰基氧合蛋白1H和13C谱信号赋值的同核和异核NMR方法

IF 1 4区物理与天体物理

Applied Magnetic Resonance Pub Date : 2023-08-17 DOI: 10.1007/s00723-023-01593-0

Denis V. Lezov, Tatiana. A. Kochina, Ruslan I. Baichurin, Stanislav I. Selivanov

{"title":"Homo- and Heteronuclear NMR Methods for Signal Assignments in 1H and 13C Spectra of 1-Aminoacyloxygermatran","authors":"Denis V. Lezov, Tatiana. A. Kochina, Ruslan I. Baichurin, Stanislav I. Selivanov","doi":"10.1007/s00723-023-01593-0","DOIUrl":"10.1007/s00723-023-01593-0","url":null,"abstract":"<div>1-Aminoacyloxygermatran containing a hexacoordinated germanium atom and an amino acid substituent in its structure—L-valine—was synthesized and studied by high resolution 1H and 13C NMR spectroscopy for the first time. Complete signal assignment in two different parts of 1H spectra containing 8 and 12 overlapped multiplets from –O-CH2- and –N-CH2- protons was made by using homonuclear J-COSY, COSY and NOESY methods and on base data of heteronuclear HMQC and HMBC experiments. The spatial structure of the studied 1-aminoacyloxygermatran was proved on the basis of data on interproton through-space interactions obtained from the NOESY spectra at different mixing times from 0.3 to 1.2 s. Simultaneously, along with cross peaks from positive NOEs, exchange cross peaks between germinal protons of different -O-CH2- groups were found in the same spectra, thus indicating the existence of a slow (in the NMR time scale) dynamic process in this compound associated with rearrangements within the atranium cycle.</div>","PeriodicalId":469,"journal":{"name":"Applied Magnetic Resonance","volume":"54 10","pages":"987 - 998"},"PeriodicalIF":1.0,"publicationDate":"2023-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"6720262","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Investigation by ESR Spectroscopy of Biology Active Electron-Rich 1,10-Phenanthrocyanines of d-Elements (Soft Colloidal Glasses) d元素生物活性富电子1,10-菲anthrocyanines的ESR光谱研究(软胶体玻璃)

IF 1 4区物理与天体物理

Applied Magnetic Resonance Pub Date : 2023-08-12 DOI: 10.1007/s00723-023-01586-z

Viktor N. Demidov, Stanislav M. Sukharzhevsky, Tatiana B. Pakhomova, Alexandra G. Ivanova, Sofia V. Paston, Evgenia V. Bogomolova

{"title":"Investigation by ESR Spectroscopy of Biology Active Electron-Rich 1,10-Phenanthrocyanines of d-Elements (Soft Colloidal Glasses)","authors":"Viktor N. Demidov, Stanislav M. Sukharzhevsky, Tatiana B. Pakhomova, Alexandra G. Ivanova, Sofia V. Paston, Evgenia V. Bogomolova","doi":"10.1007/s00723-023-01586-z","DOIUrl":"10.1007/s00723-023-01586-z","url":null,"abstract":"<div>The 1,10-phenanthrocyanines of d-elements were investigated by ESR spectroscopy both in the solid (glassy) state and in solutions. These are coordination compounds of a new structural class of apocyanines: chromophore binuclear cation complexes [M2+Ln(µ-PC)]2Xm (M2+ = Zn2+, Cd2+, Co2+, Pd2+and Pt2+; L = 1,10-phenanthroline, 2,9-Me2-1,10-phenanthroline, pyridine; X = AcO−, Cl−) with electron-rich bridged 1,10-phenanthrocyanine ligands µ-PC. They are presented as soft colloidal glasses capable of acting as inhibitors of tumor cell proliferation, fungicides and DNA complexones. The study of them by ESR spectroscopy showed that one of the possible mechanisms for the formation of spin centers is thermally directed singlet–triplet S0 → Tlow.-transitions.</div>","PeriodicalId":469,"journal":{"name":"Applied Magnetic Resonance","volume":"54 10","pages":"1015 - 1051"},"PeriodicalIF":1.0,"publicationDate":"2023-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s00723-023-01586-z.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"6720285","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Dynamics of Guest Water Molecules in Pillared Mordenite Studied by 1H NMR Relaxation 柱状丝光沸石中客体水分子动力学的1H NMR弛豫研究

IF 1 4区物理与天体物理

Applied Magnetic Resonance Pub Date : 2023-08-08 DOI: 10.1007/s00723-023-01589-w

Marina G. Shelyapina, Denis Yu. Nefedov, Anastasiia O. Antonenko, H’Linh Hmok, Andrei V. Egorov, Maria I. Egorova, Alexandr V. Ievlev, Rosario Yocupicio-Gaxiola, Vitalii Petranovskii, Joel Antúnez-García, Sergio Fuentes

引用次数: 0

1H, 13C, and 15N Resonance Assignments of the DNA Binding Domain of Ler from Enteropathogenic E. coli in Complex with DNA 肠致病性大肠杆菌中Ler的DNA结合域与DNA复合物的1H, 13C和15N共振分配

IF 1 4区物理与天体物理

Applied Magnetic Resonance Pub Date : 2023-08-02 DOI: 10.1007/s00723-023-01575-2

Fan Liu, Bo Duan, Bin Xia

{"title":"1H, 13C, and 15N Resonance Assignments of the DNA Binding Domain of Ler from Enteropathogenic E. coli in Complex with DNA","authors":"Fan Liu, Bo Duan, Bin Xia","doi":"10.1007/s00723-023-01575-2","DOIUrl":"10.1007/s00723-023-01575-2","url":null,"abstract":"<div>Ler is a master regulator for the gene regulation of the locus of enterocyte effacement (LEE) pathogenicity island (PAI), which could activate the transcription of LEE2 to LEE5 by counteracting the repression of H-NS. Ler contains an N-terminal oligomerization domain, a linker region, and a C-terminal DNA binding domain. However, the DNA binding mechanism of Ler remains unclear. Here, we report the 1H, 13C, and 15N NMR assignments of LerCTD/3A3T-DNA complex. We have achieved 97.8% completeness for the backbone and side-chain resonance assignments of LerCTD in the complex, excluding 13C′ resonances. In addition, about 91.5% of the 1H resonances of 3A3T-DNA have been assigned. Our near complete assignments of this complex will significantly advance the parsing of the intermolecular NOE signals between Ler CTD and 3A3T-DNA. Therefore, our NMR assignments formed a good basis for further DNA binding mechanism studies of Ler.</div>","PeriodicalId":469,"journal":{"name":"Applied Magnetic Resonance","volume":"54 10","pages":"979 - 985"},"PeriodicalIF":1.0,"publicationDate":"2023-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s00723-023-01575-2.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"6720267","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Incorporation of Boron into the AlPO-11 Framework According to 11B and 27Al Solid-State NMR Spectroscopy and First-Principles Calculations 根据11B和27Al固体核磁共振光谱和第一性原理计算硼在AlPO-11框架中的掺入

IF 1 4区物理与天体物理

Applied Magnetic Resonance Pub Date : 2023-08-01 DOI: 10.1007/s00723-023-01581-4

Ilya V. Yakovlev, Aleksandr V. Toktarev, Aleksandr A. Shubin, Evgeniy S. Papulovskiy, Natalia E. Cherepanova, Olga B. Lapina

{"title":"Incorporation of Boron into the AlPO-11 Framework According to 11B and 27Al Solid-State NMR Spectroscopy and First-Principles Calculations","authors":"Ilya V. Yakovlev, Aleksandr V. Toktarev, Aleksandr A. Shubin, Evgeniy S. Papulovskiy, Natalia E. Cherepanova, Olga B. Lapina","doi":"10.1007/s00723-023-01581-4","DOIUrl":"10.1007/s00723-023-01581-4","url":null,"abstract":"<div>Various aluminophosphates (AlPO-n) are a class of zeolite-like porous compounds built from alternating AlO4 and PO4 tetrahedra that demonstrate promising results as catalysts and catalyst supports. Their acid–base properties can be varied by substitution of different Al and P sites with different heteroatoms among which boron is of great interest. However, the ability to incorporate boron into the AlPO frameworks seems to be hindered since only very limited data are available on successful synthesis of BAPO (boron-substituted AlPO) materials. Here, we report the application of solid-state 27Al, 11B NMR techniques together with quantum chemical calculations for characterization of BAPO-11 obtained by hydrothermal synthesis. The coordination geometry of the B atoms in the framework is exclusively tetrahedral. However, the fraction of B atoms incorporated in the framework was very low and did not correspond to the B content in the initial composition. Extra-framework trigonal boron was also shown to be present in the sample. DFT calculations allowed us to suggest that boron replaced a small part of the Al1 site of the dehydrated AlPO-11 framework.</div>","PeriodicalId":469,"journal":{"name":"Applied Magnetic Resonance","volume":"54 10","pages":"957 - 969"},"PeriodicalIF":1.0,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"6720283","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

MRI of Inanimate Objects Using Fluorine-Containing Liquid 含氟液体对无生命物体的核磁共振成像

IF 1 4区物理与天体物理

Applied Magnetic Resonance Pub Date : 2023-07-28 DOI: 10.1007/s00723-023-01580-5

Nikolay V. Anisimov, Lev L. Gervits, Arina A. Tarasova, Ivan A. Usanov, Yury A. Pirogov

引用次数: 0