{"title":"Effects of Framework Structures of Zeolite-Templated Carbons on Their Thermal Structural Transformations","authors":"Seunghyuck Chi, Yaejun Baik, Hyungmin Jeon, Minkee Choi","doi":"10.1021/acs.chemmater.4c03089","DOIUrl":"https://doi.org/10.1021/acs.chemmater.4c03089","url":null,"abstract":"Zeolite-templated carbons (ZTCs) are ordered microporous carbons synthesized by replicating the microporous structure of zeolites with carbon. Due to carbon growth within the confined spaces of zeolite micropores, ZTCs are composed of interconnected, buckybowl-like carbon moieties with abundant edge sites terminated by hydrogen (H) atoms. The amount of H-terminated edge sites and the local framework structure of ZTCs depend on their synthesis conditions. In this study, we investigated the effects of the initial framework structures of ZTCs on their thermal structural transformations. Our results demonstrate that ZTC frameworks primarily built with nanoribbon-like carbon moieties containing abundant H-terminated edge sites undergo significant dehydrogenation (removal of H<sub>2</sub>) and concomitant formation of new C–C bonds upon thermal treatment, leading to increased carbon surface curvature, reduced micropore diameter and volume, and enhanced ultramicroporosity. These structural changes also lead to substantial modifications in macroscopic properties, such as oxidative stability, work function, and ppb-level chloroform adsorption capability in water. The findings highlight the unique potential of synthesizing microporous carbons with tailored structures and physicochemical properties through post-synthesis thermal transformation of ZTCs.","PeriodicalId":33,"journal":{"name":"Chemistry of Materials","volume":"12 1","pages":""},"PeriodicalIF":8.6,"publicationDate":"2025-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143427186","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Proton Diffusion in Orthorhombic Perovskite Sulfides","authors":"Stefan Walder, Aurelie Gueguen, Denis Kramer","doi":"10.1021/acs.chemmater.4c01841","DOIUrl":"https://doi.org/10.1021/acs.chemmater.4c01841","url":null,"abstract":"The proton mobility in perovskite sulfides is investigated. Both stable as well as unstable compounds are considered to cover a wide range of ABS<sub>3</sub> compounds, the latter were selected based on a preferably small energy difference to the thermodynamic phase equilibrium. Density functional theory (DFT) is used to analyze all possible metastable hydrogen positions within the (001) and (110)/(11̅0) planes spanned by the sulfur atoms. The nudged elastic band (NEB) method is used to determine the activation energy barriers between neighboring hydrogen sites. From the hydrogen positions and the activation energies, the diffusion rate is calculated with an approach based on the Markovian master equation. Proton mobility is analyzed in detail for a subset of compounds, while a simplified analysis of the <i>zigzag</i>-paths in the prominent [001] and [010] directions is used to explore a wider chemical space. Room temperature diffusion coefficients of the order of 10<sup>–6</sup> cm<sup>2</sup>/s are predicted to be feasible in Zr-based compounds. The A- and B-site occupants influence mobility mainly due to their impact on crystallography, because symmetry-breaking distortions that reduce the S–S distance have a leading influence on reducing activation energies, but they also induce significant anisotropy.","PeriodicalId":33,"journal":{"name":"Chemistry of Materials","volume":"35 1","pages":""},"PeriodicalIF":8.6,"publicationDate":"2025-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143418401","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Emergence of Superconductivity at 20 K in Th3P4-type In3–xS4 Synthesized by Diamond Anvil Cell with Boron-Doped Diamond Electrodes","authors":"Ryo Matsumoto, Kazuki Yamane, Terumasa Tadano, Kensei Terashima, Toru Shinmei, Tetsuo Irifune, Yoshihiko Takano","doi":"10.1021/acs.chemmater.4c03301","DOIUrl":"https://doi.org/10.1021/acs.chemmater.4c03301","url":null,"abstract":"The exploration of superconductors in metastable phases by manipulating crystal structures through high-pressure techniques has attracted significant interest in materials science to achieve a high critical temperature (<i>T</i><sub>c</sub>). In this study, we report the emergence of novel superconductivity in a metastable phase of Th<sub>3</sub>P<sub>4</sub>-type cubic In<sub>3–<i>x</i></sub>S<sub>4</sub> with remarkably high <i>T</i><sub>c</sub> at 20 K under 45 GPa by using an originally designed diamond anvil cell equipped with boron-doped diamond electrodes, which can perform a high-pressure synthesis and an in situ electrical transport measurement simultaneously. In situ structural analysis indicates that In<sub>3–<i>x</i></sub>S<sub>4</sub> appears partially above 40 GPa without heating. The high-pressure annealing treatment induces a complete transformation to the Th<sub>3</sub>P<sub>4</sub>-type structure, and the defected concentration of <i>x</i> in In<sub>3–<i>x</i></sub>S<sub>4</sub> decreases with increasing annealing temperature. The <i>T</i><sub>c</sub> in In<sub>3–<i>x</i></sub>S<sub>4</sub> is maximized at <i>x</i> = 0 and approaches 20 K. Electronic band calculations show that the high density of states composed of sulfur and indium bands is located at the conduction band bottom near Fermi energy. The record high <i>T</i><sub>c</sub> in In<sub>3–<i>x</i></sub>S<sub>4</sub> among superconducting sulfides, excluding high-<i>T</i><sub>c</sub> H<sub>3</sub>S, accelerates the further exploration of high-<i>T</i><sub>c</sub> materials within the Th<sub>3</sub>P<sub>4</sub>-type cubic family by using flexibility in the crystal structure.","PeriodicalId":33,"journal":{"name":"Chemistry of Materials","volume":"78 5 Pt 1 1","pages":""},"PeriodicalIF":8.6,"publicationDate":"2025-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143393857","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Shaokang Guo, Jian Peng, Neeraj Sharma, Jiaqi Pan, Yi Liao, Xinhao An, Hanchi Li, Zhisong Ge, Chunliang Zhou, Wen Liang Tan, Junnan Liu
{"title":"Optimizing Sc-Doped Na3V2(PO4)2F3/C as a High-Performance Cathode Material for Sodium-Ion Battery Applications","authors":"Shaokang Guo, Jian Peng, Neeraj Sharma, Jiaqi Pan, Yi Liao, Xinhao An, Hanchi Li, Zhisong Ge, Chunliang Zhou, Wen Liang Tan, Junnan Liu","doi":"10.1021/acs.chemmater.4c02872","DOIUrl":"https://doi.org/10.1021/acs.chemmater.4c02872","url":null,"abstract":"Na<sub>3</sub>V<sub>2</sub>(PO<sub>4</sub>)<sub>2</sub>F<sub>3</sub> (NVPF) has been considered as a promising NASICON-type (sodium superionic conductor) cathode material for sodium-ion batteries (SIBs). However, their development has been limited by poor electronic conductivity. To address this issue, a series of Sc-doped carbon-coated Na<sub>3</sub>V<sub>2–<i>x</i></sub>Sc<sub><i>x</i></sub>(PO<sub>4</sub>)<sub>2</sub>F<sub>3</sub>/C, <i>x</i> = 0, 0.02, 0.04, 0.06, 0.08, and 0.1 were synthesized by the sol–gel method. Sc is found to partially stabilize the crystalline framework, reduce deformation during Na<sup>+</sup> insertion/extraction, and reduce polarization, which in turn impacts the diffusion of Na<sup>+</sup> ions in the crystal lattice. The optimized NVPF has good electronic conductivity and cycling stability; in particular, the NVSPF/C-0.04 electrode exhibits the highest discharge specific capacity (125 mAh g<sup>–1</sup> at 0.2 C), excellent rate performance (87 mAh g<sup>–1</sup> at 30 C), and outstanding cycling performance (90% capacity retention after 1000 cycles at 10 C and 94% capacity retention after 100 cycles at 1 C). Density functional theory shows that the Sc-doping effectively improves the electronic conductivity of the NVPF. In situ and operando synchrotron XRD data show that the NVSPF/C-0.04 electrode undergoes phase transitions during charge/discharge at 0.2 and 2 C and indicates the reason for the capacity decay at 5 C. Finally, the NVSPF/C-0.04//HC (hard carbon) full cell performs with a good discharge specific capacity (112 mAh g<sup>–1</sup> at 1 C). This study presents a feasible approach to developing high-performance cathode materials that can be used in SIBs, and it holds great potential for the future advancement of SIBs.","PeriodicalId":33,"journal":{"name":"Chemistry of Materials","volume":"55 1","pages":""},"PeriodicalIF":8.6,"publicationDate":"2025-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143393855","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Tim Bechtel, Daniel T. Speckhard, Jonathan Godwin, Claudia Draxl
{"title":"Band-Gap Regression with Architecture-Optimized Message-Passing Neural Networks","authors":"Tim Bechtel, Daniel T. Speckhard, Jonathan Godwin, Claudia Draxl","doi":"10.1021/acs.chemmater.4c01988","DOIUrl":"https://doi.org/10.1021/acs.chemmater.4c01988","url":null,"abstract":"Graph-based neural networks and, specifically, message-passing neural networks (MPNNs) have shown great potential in predicting physical properties of solids. In this work, we train an MPNN to first classify materials through density functional theory data from the AFLOW database as being metallic or semiconducting/insulating. We then perform a neural-architecture search to explore the model architecture and hyperparameter space of MPNNs to predict the band gaps of the materials identified as nonmetals. The top-performing models from the search are pooled into an ensemble that significantly outperforms the best single model. Uncertainty quantification is evaluated with Monte Carlo dropout and ensembling, with the ensemble method proving superior. The domain of applicability of the ensemble model is analyzed with respect to the crystal systems, the inclusion of a Hubbard parameter in the density-functional-theory calculations, and the atomic species building up the materials.","PeriodicalId":33,"journal":{"name":"Chemistry of Materials","volume":"122 1","pages":""},"PeriodicalIF":8.6,"publicationDate":"2025-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143393854","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ji Yun Chung, Yujin So, Wonseong Song, Lee Kyung Kim, Jinsoo Kim, Yun Ho Kim, Jongmin Park, Jong Chan Won
{"title":"Chemically Versatile Aromatic Polyimides from Water-Borne Poly(amic Acid) Salts Synthesized by Surfactant-Assisted Aqueous Polymerization","authors":"Ji Yun Chung, Yujin So, Wonseong Song, Lee Kyung Kim, Jinsoo Kim, Yun Ho Kim, Jongmin Park, Jong Chan Won","doi":"10.1021/acs.chemmater.4c02910","DOIUrl":"https://doi.org/10.1021/acs.chemmater.4c02910","url":null,"abstract":"The water-borne aromatic poly(amic acid) salt (W-PAASs) is gaining attention as an eco-friendly approach to synthesizing precursors for high-performance polyimide (PI) materials. However, widening the versatility of the chemical structure in aromatic monomers for tuning the novel physical properties of the resulting polymers remains challenging. In this study, we introduce a surfactant-assisted, one-pot synthesis of W-PAASs, an efficient approach to broadening the chemical diversity of water-borne PI precursors. The surfactant effectively increases the interface of hydrophobic monomers with the aqueous medium, accelerating the reaction between the dianhydride and diamine monomers. This enables the use of hydrophobic monomers such as 4,4-oxidianline, 1,3-bis(4-aminophenoxy)-benzene, and 4,4-diaminophenyl sulfide. The chemical versatility of synthetic monomers allows for the preparation of PI films with novel mechanical, thermal, and optical properties. Our findings demonstrate that improving the synthetic environment for W-PAAS is crucial for developing advanced engineering plastics through sustainable, eco-friendly processes, paving the route for future high-tech applications.","PeriodicalId":33,"journal":{"name":"Chemistry of Materials","volume":"63 1","pages":""},"PeriodicalIF":8.6,"publicationDate":"2025-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143393856","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Jan Langmann, Georg Eickerling, Lilian Prodan, Alexander A. Tsirlin, Maximilian Winkler, Sándor Bordács, Vladimir Tsurkan, Istvan Kézsmárki
{"title":"Correction to “Atomic-Scale Polar Helix in Inorganic Crystals”","authors":"Jan Langmann, Georg Eickerling, Lilian Prodan, Alexander A. Tsirlin, Maximilian Winkler, Sándor Bordács, Vladimir Tsurkan, Istvan Kézsmárki","doi":"10.1021/acs.chemmater.5c00235","DOIUrl":"https://doi.org/10.1021/acs.chemmater.5c00235","url":null,"abstract":"The Acknowledgments section of the original paper should be extended by the following information: We acknowledge the European Synchrotron Radiation Facility (ESRF) for providing synchrotron beamtime for this study. We would also like to thank Andrew Fitch and Ola Grendal for their technical assistance at the ID22 beamline. None of the scientific contents of the manuscript are affected by this correction. This article has not yet been cited by other publications.","PeriodicalId":33,"journal":{"name":"Chemistry of Materials","volume":"19 1","pages":""},"PeriodicalIF":8.6,"publicationDate":"2025-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143393861","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ian E. Campbell, Aashi Gupta, Pavlina Metaxa, A. Arifutzzaman, Tao Ma, Paula Arellano, Ray Duffy, Ageeth A. Bol
{"title":"Di-tert-butyl Disulfide as a Replacement for Hydrogen Sulfide in the Atomic Layer Deposition of Two-Dimensional Molybdenum Disulfide","authors":"Ian E. Campbell, Aashi Gupta, Pavlina Metaxa, A. Arifutzzaman, Tao Ma, Paula Arellano, Ray Duffy, Ageeth A. Bol","doi":"10.1021/acs.chemmater.4c02561","DOIUrl":"https://doi.org/10.1021/acs.chemmater.4c02561","url":null,"abstract":"Atomic layer deposition (ALD), with its precise process control and conformality, has recently gained interest for synthesizing transition metal sulfides like MoS<sub>2</sub>, which have varied applications in low-dimensional electronics and electrocatalysts. Hydrogen sulfide (H<sub>2</sub>S) has been used in many sulfide ALD processes; however, H<sub>2</sub>S is a toxic gas that requires expensive containment and abatement measures for shipping, installation, and storage. Herein, we report a PEALD process capable of synthesizing MoS<sub>2</sub> without H<sub>2</sub>S. This process utilizes a Mo precursor commonly used in ALD, hydrogen plasma, and di-<i>tert</i>-butyl disulfide (TBDS), which is a liquid that is significantly less hazardous and expensive than H<sub>2</sub>S. It was found that the TBDS-based PEALD process results in layered, stoichiometric MoS<sub>2</sub> with limited contamination. The TBDS-based PEALD process was also analyzed via mass spectrometry to determine the mechanistic roles of each reactant. Apparently, H<sub>2</sub> plasma removes ligands from the chemisorbed Mo precursor, which allows TBDS to sulfurize the top layer, producing H<sub>2</sub>S and isobutene as byproducts. MoS<sub>2</sub> films deposited via the TBDS-based process possessed fewer yet taller out-of-plane growths and similar crystal grain diameter (∼10 nm) and electrical resistivity (13.6–15.5 Ω·cm for 3 nm thick films) compared to films made with H<sub>2</sub>S. Thus, the TBDS-based process is a suitable and safer alternative to the H<sub>2</sub>S-based process for large-area synthesis of layered MoS<sub>2</sub>.","PeriodicalId":33,"journal":{"name":"Chemistry of Materials","volume":"18 1","pages":""},"PeriodicalIF":8.6,"publicationDate":"2025-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143393858","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ekaterina Kochetkova, Marie Tardieux, Manaswini Sahoo, Falk Pabst, Laura Folkers, Anja U. B. Wolter, Laura. T. Corredor, Irene Aguilera, Anna Isaeva
{"title":"Mn Interstitials in Layered Mn1+xSb2–2/3xTe4: Structural Modification and Curie Temperature Boost","authors":"Ekaterina Kochetkova, Marie Tardieux, Manaswini Sahoo, Falk Pabst, Laura Folkers, Anja U. B. Wolter, Laura. T. Corredor, Irene Aguilera, Anna Isaeva","doi":"10.1021/acs.chemmater.4c02729","DOIUrl":"https://doi.org/10.1021/acs.chemmater.4c02729","url":null,"abstract":"Layered ternary (Mn<i>X</i><sub>2</sub>Te<sub>4</sub>)(<i>X</i><sub>2</sub>Te<sub>3</sub>)<sub><i>n</i></sub> (<i>X</i> = Bi or Sb, <i>n</i> = 0–3) tellurides are intensely studied as perspective magnetic topological insulators: MnBi<sub>2</sub>Te<sub>4</sub> and MnBi<sub>4</sub>Te<sub>7</sub> demonstrate the quantum anomalous Hall effect up to several Kelvin. To enlarge the temperature range for this quantum behavior, the materials require a net magnetization and a high Curie temperature, <i>T</i><sub>C</sub>. Recently, we found that Mn enrichment and Mn/Sb site intermixing increase the <i>T</i><sub>C</sub> from 30 K in MnSb<sub>2</sub>Te<sub>4</sub> to 58 K in Mn<sub>2.01(1)</sub>Sb<sub>1.19(1)</sub>Te<sub>4</sub>. Here, we synthesize the utmost manganese-rich members of this materials family, with an average Mn content of 28–32 at. % and the record <i>T</i><sub>C</sub> = 65–73 K nearing the liquid-nitrogen threshold. By combining single-crystal X-ray diffraction, <i>ab initio</i> modeling and bulk DC magnetization, we pinpoint the relationship between the lattice symmetry and the magnetic order. The trigonal Mn<sub>1.90(1)</sub>Sb<sub>1.39(1)</sub>Te<sub>4</sub> phase with manganese atoms in the van der Waals gap hosts the highest-<i>T</i><sub>C</sub> ferrimagnetic state. We get the first insights into its electronic structure and topological nature by <i>ab initio</i> modeling using density functional theory. Initiated by the filling of the van der Waals gap, the compound mimics a structural transition from a trigonal (sp. gr. <i>R</i>3̅<i>m</i>) to a cubic lattice (sp. gr. <i>Fm</i>3̅<i>m</i>), which is reminiscent of the structural polymorphism of the Ge–Sb–Te thermoelectrics.","PeriodicalId":33,"journal":{"name":"Chemistry of Materials","volume":"50 1","pages":""},"PeriodicalIF":8.6,"publicationDate":"2025-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143401249","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Damien K. J. Lee, Zeyu Deng, Gopalakrishnan Sai Gautam, Pieremanuele Canepa
{"title":"Correction to “Thermodynamics of Sodium–Lead Alloys for Negative Electrodes from First-Principles”","authors":"Damien K. J. Lee, Zeyu Deng, Gopalakrishnan Sai Gautam, Pieremanuele Canepa","doi":"10.1021/acs.chemmater.5c00271","DOIUrl":"https://doi.org/10.1021/acs.chemmater.5c00271","url":null,"abstract":"1. In Figure 1a, Na<sub>15</sub>Pb<sub>4</sub> was incorrectly labeled as Na<sub>15</sub>Pb<sub>3</sub>. 2. In Figure 2a,b, Na<sub>5</sub>Pb<sub>2</sub> was incorrectly labeled as Na<sub>5</sub>Pb<sub>3</sub>. 3. Page 6834, the third paragraph of the first column: “... line compounds (e.g., NaPb, Na<sub>5</sub>Pb<sub>3</sub>, and Na<sub>15</sub>Pb<sub>4</sub>) ...” should be “... line compounds (e.g., NaPb, Na<sub>5</sub>Pb<sub>2</sub>, and Na<sub>15</sub>Pb<sub>4</sub>) ...” This article has not yet been cited by other publications.","PeriodicalId":33,"journal":{"name":"Chemistry of Materials","volume":"61 1","pages":""},"PeriodicalIF":8.6,"publicationDate":"2025-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143401710","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}