Chemistry of Materials最新文献_第10页

IF 7.2 2区材料科学

Chemistry of Materials Pub Date : 2025-07-08

Jinxiao Wu, Minghui Ning, Huimin Yu, Huanyu Jin* and Yao Zheng*,

引用次数: 0

IF 7.2 2区材料科学

Chemistry of Materials Pub Date : 2025-07-08

Joshua M. Rinehart, Zhuang Xu, Ziming Wang, Anna M. Österholm, Lucas Q. Flagg, Lee J. Richter, Chad R. Snyder, Ying Diao and John R. Reynolds*,

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IF 7.2 2区材料科学

Chemistry of Materials Pub Date : 2025-07-08

Pernilla Helmer, Rodrigo M. Ronchi, Jonas Björk and Johanna Rosen*,

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IF 7.2 2区材料科学

Chemistry of Materials Pub Date : 2025-07-08

Richard Randall*, and , Arun Majumdar*,

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Molar Mass Improves the Performance of n‑Type Organic Electrochemical Transistors. 摩尔质量提高n型有机电化学晶体管的性能。

IF 7 2区材料科学

Chemistry of Materials Pub Date : 2025-07-07 eCollection Date: 2025-07-22 DOI: 10.1021/acs.chemmater.5c00949

Dominik Stegerer, Tiefeng Liu, Miao Xiong, Han-Yan Wu, Min Gyu Kang, Han Young Woo, Simone Fabiano, Michael Sommer

{"title":"Molar Mass Improves the Performance of n‑Type Organic Electrochemical Transistors.","authors":"Dominik Stegerer, Tiefeng Liu, Miao Xiong, Han-Yan Wu, Min Gyu Kang, Han Young Woo, Simone Fabiano, Michael Sommer","doi":"10.1021/acs.chemmater.5c00949","DOIUrl":"10.1021/acs.chemmater.5c00949","url":null,"abstract":"We report on the synthesis and use of two side-chain-free ionenes with varying heteroatoms, PFu and PTh, for n-type accumulation-mode OECTs. Compared to PTh, PFu is more challenging to make, less stable, and shows increased water solubility. The optical properties and surface morphologies of the two derivatives are comparable, but their microstructures vary distinctly in terms of ordering and backbone orientation. While the backbones of PTh show a preferential face-on orientation, PFu is significantly less ordered. The OECT performance of PTh is improved by 1 order of magnitude compared to PFu, as indicated by μC* values of 116.16 and 10.66 F cm-1 V-1 s-1, respectively. Further increasing the molar mass of PTh doubles the performance, resulting in a record-high μC* value of 225.71 F cm-1 V-1 s-1 and a high μ value of 0.58 cm2 V-1 s-1, highlighting the crucial role of molecular weight control for enhancing device performance.","PeriodicalId":33,"journal":{"name":"Chemistry of Materials","volume":"37 14","pages":"5226-5233"},"PeriodicalIF":7.0,"publicationDate":"2025-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12288006/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144725979","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Pore Size Engineering of MOFs by Pore Edge Reaction: Tetrazine Click and Hydrogen Adsorption in Theory and Experiment. 基于孔边反应的mof孔径工程：理论与实验的四嗪吸附与氢吸附。

IF 7 2区材料科学

Chemistry of Materials Pub Date : 2025-07-02 eCollection Date: 2025-07-22 DOI: 10.1021/acs.chemmater.5c00914

Damian Jędrzejowski, Michał Ryndak, Gabriela Jajko-Liberka, Paweł Kozyra, Witold Piskorz, Volodymyr Bon, Stefan Kaskel, Dariusz Matoga

{"title":"Pore Size Engineering of MOFs by Pore Edge Reaction: Tetrazine Click and Hydrogen Adsorption in Theory and Experiment.","authors":"Damian Jędrzejowski, Michał Ryndak, Gabriela Jajko-Liberka, Paweł Kozyra, Witold Piskorz, Volodymyr Bon, Stefan Kaskel, Dariusz Matoga","doi":"10.1021/acs.chemmater.5c00914","DOIUrl":"10.1021/acs.chemmater.5c00914","url":null,"abstract":"Precise control over the porosity of metal-organic frameworks (MOFs) is crucial to optimize their properties and leverage their inherent tunability. However, there are ongoing challenges in pore size engineering for each MOF platform such as preserving crystallinity and morphology and facilitating reliable theoretical predictions throughout a series of modulated structures. Among postsynthetic strategies, mainly covalent functionalization appears to simultaneously preserve structural integrity and enable accurate theoretical predictions. Here, we present a MOF platform [M2(RCOO)4(H2O)2], JUK-21-(M), M = Cu or Zn, containing a tetrazine-based tetracarboxylate linker, which we covalently functionalize using the inverse electron-demand Diels-Alder reaction (iEDDA) and five dienophiles of various bulkiness, yielding a series of JUK-21-(Cu)-x MOFs. In addition to experiments, the iEDDA reactivity is assessed by applying a charge distribution susceptibility analysis, including Fukui functions, hardness, and relevant donor/acceptor orbitals. Comprehensive theoretical and experimental insights into the adsorption of nitrogen and hydrogen by JUK-21-(Cu)-x enable rationalization of the observed isotherms and show the isosteric heat of hydrogen adsorption as a highly sensitive parameter to validate the modification efficiency. Our findings indicate to what extent the pore size of MOFs affects the adsorption properties and highlight potential pitfalls that arise even with the precise covalent functionalization of MOFs.","PeriodicalId":33,"journal":{"name":"Chemistry of Materials","volume":"37 14","pages":"5206-5216"},"PeriodicalIF":7.0,"publicationDate":"2025-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12287999/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144725982","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Overhauser Dynamic Nuclear Polarization of Lithiated Graphite Anodes: Probing Bulk and Surface Structures. 锂化石墨阳极的大修动态核极化：探测体和表面结构。

IF 7 2区材料科学

Chemistry of Materials Pub Date : 2025-07-01 eCollection Date: 2025-07-22 DOI: 10.1021/acs.chemmater.5c00845

Teresa Insinna, Anne-Laure Barra, Clare P Grey

{"title":"Overhauser Dynamic Nuclear Polarization of Lithiated Graphite Anodes: Probing Bulk and Surface Structures.","authors":"Teresa Insinna, Anne-Laure Barra, Clare P Grey","doi":"10.1021/acs.chemmater.5c00845","DOIUrl":"10.1021/acs.chemmater.5c00845","url":null,"abstract":"Graphite is used, almost ubiquitously, as an anode material in today's high energy density Li-ion batteries. Both artificial and natural graphites are widely used, and there are large differences in the production methods, cost, particle morphologies, sizes, and percentage of defects in their structures, all these parameters affecting use and performance. The success of graphite as an anode depends on the formation of a Li-ion-conducting passivation layer (the solid electrolyte interphase (SEI)) on the first cycle, with the nature of this layer still being under investigation with a range of approaches. During lithiation (charge in a full cell), graphite is lithiated in stages and becomes electronically conductive. The conduction electrons of lithiated graphite anodes are exploited in this work to enhance the nuclear magnetic resonance (NMR) signal of bulk and surface nuclei via Overhauser dynamic nuclear polarization (DNP). The parameters directly affecting the enhancement factor (leakage factor, saturation factor, and coupling factor) are examined in detail for an artificial graphite at different lithiation stages. Four additional (natural and artificial) graphites are then studied to explore the effects of particle size and morphology, electron relaxation times, and conductivity on the observed DNP enhancements. Finally, the polarization transfer between bulk and surface (SEI) species is explored through 6,7Li, 1H, and 13C DNP NMR experiments.","PeriodicalId":33,"journal":{"name":"Chemistry of Materials","volume":"37 14","pages":"5167-5182"},"PeriodicalIF":7.0,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12287998/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144725981","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Revealing the Self-Doped Nature of CdxAgySe Quantum Dots under Cation Exchange Control 揭示阳离子交换控制下CdxAgySe量子点的自掺杂性质

IF 8.6 2区材料科学

Chemistry of Materials Pub Date : 2025-06-26 DOI: 10.1021/acs.chemmater.4c03484

Jin Hyeok Lee, So Young Eom, Hyeong Seok Kang, Haemin Song, Soeun Jeon, Si Yu Kim, Kwang Seob Jeong

{"title":"Revealing the Self-Doped Nature of CdxAgySe Quantum Dots under Cation Exchange Control","authors":"Jin Hyeok Lee, So Young Eom, Hyeong Seok Kang, Haemin Song, Soeun Jeon, Si Yu Kim, Kwang Seob Jeong","doi":"10.1021/acs.chemmater.4c03484","DOIUrl":"https://doi.org/10.1021/acs.chemmater.4c03484","url":null,"abstract":"Metal-chalcogenide nanocrystals inevitably experience a state with a nonstoichiometric ratio during their growth. Considering that a few atoms function as dopants, the nonstoichiometric composition can determine the fundamental properties of the materials. Such a stoichiometry change in real time is extremely fast, and thereby, the product lies in an energetically stable state with a stoichiometric integral ratio. The phenomenon becomes dramatic for the cation-exchange reaction. Thus, the cation-exchange reaction with a controllable exchange rate can be an excellent way to generate the unexplored metastable state with a nonstoichiometry where interesting optical and electrical properties appear. Here, we report cation-exchanged CdxAgySe quantum dots (QDs) at a metastable self-doped state exhibiting intraband transition in the mid-wavelength infrared (mid-IR) regime. The state is successfully captured by controlling the reaction rate of the cation exchange and analyzed using short-wavelength and mid-IR photoluminescence spectroscopy under cryo-temperature, transmission electron microscopy, nuclear magnetic resonance, X-ray diffraction analysis, and energy-dispersive X-ray spectroscopy. The electronic mid-IR intraband transition of the cation-exchanged self-doped quantum dots is further confirmed by measuring the infrared photocurrent spectrum of the QD-based infrared sensor.","PeriodicalId":33,"journal":{"name":"Chemistry of Materials","volume":"45 1","pages":""},"PeriodicalIF":8.6,"publicationDate":"2025-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144516226","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}

引用次数: 0

d-Electron Heavy Fermion Behavior in a Near-Room-Temperature Polar Metallic Ferrimagnet: A Case of Mn5SiC 近室温极性金属铁磁体中的d电子重费米子行为：以Mn5SiC为例

IF 8.6 2区材料科学

Chemistry of Materials Pub Date : 2025-06-25 DOI: 10.1021/acs.chemmater.5c00868

Zachary T. Messegee, Vasile Ovidiu Garlea, Igor I. Mazin, Seung Han Shin, Yan Xin, Hari Bhandari, Stuart Calder, Resham Babu Regmi, Nirmal J. Ghimire, Joon I. Jang, Xiaoyan Tan

{"title":"d-Electron Heavy Fermion Behavior in a Near-Room-Temperature Polar Metallic Ferrimagnet: A Case of Mn5SiC","authors":"Zachary T. Messegee, Vasile Ovidiu Garlea, Igor I. Mazin, Seung Han Shin, Yan Xin, Hari Bhandari, Stuart Calder, Resham Babu Regmi, Nirmal J. Ghimire, Joon I. Jang, Xiaoyan Tan","doi":"10.1021/acs.chemmater.5c00868","DOIUrl":"https://doi.org/10.1021/acs.chemmater.5c00868","url":null,"abstract":"Polycrystalline Mn5SiC was synthesized by using a high-temperature solid-state method. Mn5SiC adopts a polar space group (Cmc21) with six crystallographic Mn sites confirmed by X-ray and neutron diffraction, transmission electron microscopy, and second harmonic generation experiments. The complex crystal structure features edge-sharing trigonal prisms and icosahedra, as well as face/edge-sharing pentagonal prisms. Magnetic measurements indicate ferrimagnetic ordering with a transition temperature of 284 K. The ferrimagnetic structure (magnetic space group Cm’c’21) was further identified by powder neutron diffraction, where collinear Mn spins align along the crystallographic c-axis. The refined magnetic moment for each crystallographic Mn site at 4 K is 1.8(2), −2.42(9), −1.72(8), 0.51(6), 0.50(4), and 1.7(2) μB. Density functional theory calculations confirm both the metallic behavior and the ferrimagnetic structure observed experimentally and further provide insight into the observed Mn moment dependence across crystallographic sites. The resistivity and specific heat measurements and density functional theory calculations reveal a substantially large Kadowaki–Woods ratio of 5 × 10–5 μΩ·cm/(mJ/mol)2 and a many-body renormalization factor of 5.5, indicating the unusual heavy Fermion behavior in such an itinerant magnetic metal.","PeriodicalId":33,"journal":{"name":"Chemistry of Materials","volume":"12 1","pages":""},"PeriodicalIF":8.6,"publicationDate":"2025-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144516227","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}

引用次数: 0

IF 7.2 2区材料科学

Chemistry of Materials Pub Date : 2025-06-24

引用次数: 0