Chemistry of Materials最新文献_第6页

Opening the Hysteresis Loop in MAB Magnets: Experimental and Computational Studies of CrMn4SiB2 and Mo0.8Mn4.2SiB2

IF 8.6 2区材料科学

Chemistry of Materials Pub Date : 2025-03-12 DOI: 10.1021/acs.chemmater.5c00187

Shola E. Adeniji, Alexei A. Belik, Takao Mori, Boniface P. T. Fokwa

{"title":"Opening the Hysteresis Loop in MAB Magnets: Experimental and Computational Studies of CrMn4SiB2 and Mo0.8Mn4.2SiB2","authors":"Shola E. Adeniji, Alexei A. Belik, Takao Mori, Boniface P. T. Fokwa","doi":"10.1021/acs.chemmater.5c00187","DOIUrl":"https://doi.org/10.1021/acs.chemmater.5c00187","url":null,"abstract":"This study presents the synthesis and magnetic characterization of two quaternary MAB phases: CrMn4SiB2 and Mo0.8Mn4.2SiB2. Using a refined synthesis method, we successfully produced single-phase compounds, overcoming previous challenges associated with impurity phases. Both compounds crystallize in the tetragonal space group I4/mcm, with Mo demonstrating distinct site preferences in Mo0.8Mn4.2SiB2. Magnetic measurements indicate the presence of long-range ferromagnetic interactions, with Curie temperatures (TC) of approximately 270 K for CrMn4SiB2 and 340 K for Mo0.8Mn4.2SiB2. Field-dependent magnetization measurements indicate a saturation magnetization (Ms) of 5.128 μB/f.u. (at 5 K) for CrMn4SiB2 and 6.214 μB/f.u. (at 5 K) and 3.692 μB/f.u. (at 300 K) for Mo0.8Mn4.2SiB2. The introduction of Mo or Cr in the ternary parent compound Mn5SiB2, opens a hysteresis for the first time in this class of T2 phases, with intrinsic coercivities of Hc = 5.57 kA/m for CrMn4SiB2 and 6.53 kA/m for Mo0.8Mn4.2SiB2. Density functional theory (DFT) calculations confirm the ferromagnetic ordering while the magnetocrystalline anisotropy energy (MAE) calculations show that CrMn4SiB2 and MoMn4SiB2 have in-plane anisotropy with higher MAE values than Mn5SiB2, thus confirming experimental findings. This research not only introduces a synthesis pathway toward single-phase T2-based quaternary materials, but it also opens an avenue toward MAB-based permanent magnets.","PeriodicalId":33,"journal":{"name":"Chemistry of Materials","volume":"68 1","pages":""},"PeriodicalIF":8.6,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143599623","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

Lattice-Matched Heterogeneous Nucleation Eliminates Defective Buried Interfaces in Halide Perovskites

IF 7.2 2区材料科学

Chemistry of Materials Pub Date : 2025-03-12 DOI: 10.1021/acs.chemmater.4c0303410.1021/acs.chemmater.4c03034

Paramvir Ahlawat*, Cecilia Clementi, Felix Musil, Maria-Andreea Filip and M. Ibrahim Dar,

{"title":"Lattice-Matched Heterogeneous Nucleation Eliminates Defective Buried Interfaces in Halide Perovskites","authors":"Paramvir Ahlawat*, Cecilia Clementi, Felix Musil, Maria-Andreea Filip and M. Ibrahim Dar, ","doi":"10.1021/acs.chemmater.4c0303410.1021/acs.chemmater.4c03034","DOIUrl":"https://doi.org/10.1021/acs.chemmater.4c03034https://doi.org/10.1021/acs.chemmater.4c03034","url":null,"abstract":"Advancements in the formation of metal halide perovskite semiconductors have led to solar cells and light-emitting devices with efficiencies exceeding 25%. To push these performances beyond theoretical limits and achieve long-term stability, a fundamental understanding of the structural evolution at the interface between perovskites and charge-transporting materials is essential. In this study, we perform molecular dynamics simulations to investigate the atomic-scale processes involved in the nucleation and growth of cesium lead bromide perovskite on commonly used oxide interfaces. Our results reveal that the perovskite crystallizes through a heteroepitaxial mechanism, which can induce the formation of dislocations, voids, and defects at the buried interface as well as grain boundaries within the bulk crystal. From simulations, we find that the lattice-matched interfaces promote epitaxially ordered growth of the perovskite, potentially mitigating defect formation at the interface. Eliminating these defects could arguably pave the way for achieving the long-term stability required for high-efficiency perovskite solar cells and light-emitting diodes.","PeriodicalId":33,"journal":{"name":"Chemistry of Materials","volume":"37 6","pages":"2177–2191 2177–2191"},"PeriodicalIF":7.2,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143678658","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

Fermi-Level Interstitial Electron Contributions: A Key Mechanism Driving Magnetism in Electrides

IF 7.2 2区材料科学

Chemistry of Materials Pub Date : 2025-03-12 DOI: 10.1021/acs.chemmater.5c0015810.1021/acs.chemmater.5c00158

Jiahao Yu, Kun Li, Hideo Hosono and Junjie Wang*,

{"title":"Fermi-Level Interstitial Electron Contributions: A Key Mechanism Driving Magnetism in Electrides","authors":"Jiahao Yu, Kun Li, Hideo Hosono and Junjie Wang*, ","doi":"10.1021/acs.chemmater.5c0015810.1021/acs.chemmater.5c00158","DOIUrl":"https://doi.org/10.1021/acs.chemmater.5c00158https://doi.org/10.1021/acs.chemmater.5c00158","url":null,"abstract":"Electrides, a unique class of ionic materials, are distinguished by their exceptional properties, such as low work functions, making them highly versatile for a broad range of applications. Remarkably, some electrides exhibit magnetism, even in the absence of conventional magnetic elements. However, the underlying mechanisms governing their magnetic properties require further investigation, which will enable the development of magnetic electrides that are not primarily limited to modifying materials with magnetic elements. In this study, we demonstrate that the proportion of interstitial electrons contributing to states near the Fermi level is a critical factor in the emergence of magnetism in electrides. Leveraging this insight, we successfully designed and identified a series of magnetic electrides, including Ca3YNbSi3 and Sr24P15F, without reliance on known magnetic prototypes. This strategy and the accompanying theoretical framework present a flexible and powerful approach, potentially expanding the frontiers of magnetic electrides research.","PeriodicalId":33,"journal":{"name":"Chemistry of Materials","volume":"37 6","pages":"2339–2348 2339–2348"},"PeriodicalIF":7.2,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143678451","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

Driving Thermoelectric Optimization in AgSbTe2 via Design of Experiments and Machine Learning

IF 8.6 2区材料科学

Chemistry of Materials Pub Date : 2025-03-12 DOI: 10.1021/acs.chemmater.5c00022

Jan-Hendrik Pöhls, Chun-Wan Timothy Lo, Marissa MacIver, Yu-Chih Tseng, Yurij Mozharivskyj

引用次数: 0

Regulating the Co-Spin State in a CoP/Co2P Heterojunction by Phosphorus Vacancies for Efficient Seawater Hydrogen Evolution

IF 8.6 2区材料科学

Chemistry of Materials Pub Date : 2025-03-11 DOI: 10.1021/acs.chemmater.4c02773

Jiang-Bo Chen, Huan Wang, Yu-Xuan Xiao, Jie Ying

{"title":"Regulating the Co-Spin State in a CoP/Co2P Heterojunction by Phosphorus Vacancies for Efficient Seawater Hydrogen Evolution","authors":"Jiang-Bo Chen, Huan Wang, Yu-Xuan Xiao, Jie Ying","doi":"10.1021/acs.chemmater.4c02773","DOIUrl":"https://doi.org/10.1021/acs.chemmater.4c02773","url":null,"abstract":"Hydrogen energy production through seawater splitting is an essential route for a sustainable energy society; however, it is impeded by chlorine corrosion. Therefore, the rational design of highly efficient electrocatalysts for hydrogen evolution by repelling chlorine ion effects is key to unlocking its wide operation. Herein, we report the facile construction of a cobalt phosphide heterojunction with phosphorus vacancies for efficient hydrogen evolution, which needs overpotentials of 82/287 mV and 75/237 mV to achieve a current density of 10/100 mA cm–2 in 1 M KOH and simulated seawater (1 M KOH + 0.5 M NaCl), respectively, outperforming numerous reported non-noble-metal-based electrocatalysts in water/seawater systems. Additionally, the catalyst demonstrates long-time stability over a 120 h period in simulated seawater. More profoundly, both experimental and computational results demonstrate that phosphorus vacancies induce a higher spin state in cobalt atoms within phosphides, which accelerates the desorption of hydrogen species and creates a significant repulsive effect on Cl–, consequently contributing to significantly enhanced hydrogen evolution in simulated seawater.","PeriodicalId":33,"journal":{"name":"Chemistry of Materials","volume":"22 1","pages":""},"PeriodicalIF":8.6,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143599624","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

Regulating the Co-Spin State in a CoP/Co2P Heterojunction by Phosphorus Vacancies for Efficient Seawater Hydrogen Evolution

IF 7.2 2区材料科学

Chemistry of Materials Pub Date : 2025-03-11 DOI: 10.1021/acs.chemmater.4c0277310.1021/acs.chemmater.4c02773

Jiang-Bo Chen, Huan Wang, Yu-Xuan Xiao and Jie Ying*,

{"title":"Regulating the Co-Spin State in a CoP/Co2P Heterojunction by Phosphorus Vacancies for Efficient Seawater Hydrogen Evolution","authors":"Jiang-Bo Chen, Huan Wang, Yu-Xuan Xiao and Jie Ying*, ","doi":"10.1021/acs.chemmater.4c0277310.1021/acs.chemmater.4c02773","DOIUrl":"https://doi.org/10.1021/acs.chemmater.4c02773https://doi.org/10.1021/acs.chemmater.4c02773","url":null,"abstract":"Hydrogen energy production through seawater splitting is an essential route for a sustainable energy society; however, it is impeded by chlorine corrosion. Therefore, the rational design of highly efficient electrocatalysts for hydrogen evolution by repelling chlorine ion effects is key to unlocking its wide operation. Herein, we report the facile construction of a cobalt phosphide heterojunction with phosphorus vacancies for efficient hydrogen evolution, which needs overpotentials of 82/287 mV and 75/237 mV to achieve a current density of 10/100 mA cm–2 in 1 M KOH and simulated seawater (1 M KOH + 0.5 M NaCl), respectively, outperforming numerous reported non-noble-metal-based electrocatalysts in water/seawater systems. Additionally, the catalyst demonstrates long-time stability over a 120 h period in simulated seawater. More profoundly, both experimental and computational results demonstrate that phosphorus vacancies induce a higher spin state in cobalt atoms within phosphides, which accelerates the desorption of hydrogen species and creates a significant repulsive effect on Cl–, consequently contributing to significantly enhanced hydrogen evolution in simulated seawater.","PeriodicalId":33,"journal":{"name":"Chemistry of Materials","volume":"37 6","pages":"2145–2154 2145–2154"},"PeriodicalIF":7.2,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143678454","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

Engineering the Artificial Cathode-Electrolyte Interphase Coating for Solid-State Batteries via Tailored Annealing

IF 7.2 2区材料科学

Chemistry of Materials Pub Date : 2025-03-11 DOI: 10.1021/acs.chemmater.4c0308610.1021/acs.chemmater.4c03086

Maximilian Kissel, Felix Walther, Jonas Hertle, Thomas Demuth, Ruizhuo Zhang, Philipp Brüner, Torsten Brezesinski, Kerstin Volz and Jürgen Janek*,

{"title":"Engineering the Artificial Cathode-Electrolyte Interphase Coating for Solid-State Batteries via Tailored Annealing","authors":"Maximilian Kissel, Felix Walther, Jonas Hertle, Thomas Demuth, Ruizhuo Zhang, Philipp Brüner, Torsten Brezesinski, Kerstin Volz and Jürgen Janek*, ","doi":"10.1021/acs.chemmater.4c0308610.1021/acs.chemmater.4c03086","DOIUrl":"https://doi.org/10.1021/acs.chemmater.4c03086https://doi.org/10.1021/acs.chemmater.4c03086","url":null,"abstract":"Solid-state batteries with nickel-rich layered oxide cathode active materials (CAMs) and sulfide-based solid electrolytes (SEs) are emerging as promising candidates for next-generation energy-storage systems. However, both active and electrolyte materials suffer from poor (electro)chemical compatibility, leading to severe degradation at the SE|CAM interface which is highly detrimental to the long-term cycling stability. Inspired by the natural cathode-electrolyte interphase (CEI), a novel coating concept involves formation of a protective, artificial CEI coating prior to cell assembly. Here, we investigate the oxidative annealing process after coating Li3PS4 as precursor onto polycrystalline LiNi0.85Co0.10Mn0.05O2 (NCM85). A combination of microscopic (scanning transmission electron microscopy, STEM), spectroscopic/spectrometric (X-ray photoelectron spectroscopy, XPS, low energy ion scattering, LEIS, and time-of-flight secondary ion mass spectrometry, ToF-SIMS), and electrochemical methods reveals that the composition, morphology, and performance of the coating can be tailored by controlled annealing in oxidizing atmosphere. The effect on coating quality and its stabilizing effect on the SE|CAM interface are examined. Only a morphologically and compositionally optimized coating can successfully prevent interfacial degradation, highlighting the need for tailored process parameters to fully exploit the coating potential. The optimization is supported by an efficient benchmarking framework combining electrochemical and analytical methods, which can serve as a basis for further systematic coating studies.","PeriodicalId":33,"journal":{"name":"Chemistry of Materials","volume":"37 6","pages":"2192–2203 2192–2203"},"PeriodicalIF":7.2,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acs.chemmater.4c03086","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143678642","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

Engineering the Artificial Cathode-Electrolyte Interphase Coating for Solid-State Batteries via Tailored Annealing

IF 8.6 2区材料科学

Chemistry of Materials Pub Date : 2025-03-11 DOI: 10.1021/acs.chemmater.4c03086

Maximilian Kissel, Felix Walther, Jonas Hertle, Thomas Demuth, Ruizhuo Zhang, Philipp Brüner, Torsten Brezesinski, Kerstin Volz, Jürgen Janek

{"title":"Engineering the Artificial Cathode-Electrolyte Interphase Coating for Solid-State Batteries via Tailored Annealing","authors":"Maximilian Kissel, Felix Walther, Jonas Hertle, Thomas Demuth, Ruizhuo Zhang, Philipp Brüner, Torsten Brezesinski, Kerstin Volz, Jürgen Janek","doi":"10.1021/acs.chemmater.4c03086","DOIUrl":"https://doi.org/10.1021/acs.chemmater.4c03086","url":null,"abstract":"Solid-state batteries with nickel-rich layered oxide cathode active materials (CAMs) and sulfide-based solid electrolytes (SEs) are emerging as promising candidates for next-generation energy-storage systems. However, both active and electrolyte materials suffer from poor (electro)chemical compatibility, leading to severe degradation at the SE|CAM interface which is highly detrimental to the long-term cycling stability. Inspired by the natural cathode-electrolyte interphase (CEI), a novel coating concept involves formation of a protective, artificial CEI coating prior to cell assembly. Here, we investigate the oxidative annealing process after coating Li3PS4 as precursor onto polycrystalline LiNi0.85Co0.10Mn0.05O2 (NCM85). A combination of microscopic (scanning transmission electron microscopy, STEM), spectroscopic/spectrometric (X-ray photoelectron spectroscopy, XPS, low energy ion scattering, LEIS, and time-of-flight secondary ion mass spectrometry, ToF-SIMS), and electrochemical methods reveals that the composition, morphology, and performance of the coating can be tailored by controlled annealing in oxidizing atmosphere. The effect on coating quality and its stabilizing effect on the SE|CAM interface are examined. Only a morphologically and compositionally optimized coating can successfully prevent interfacial degradation, highlighting the need for tailored process parameters to fully exploit the coating potential. The optimization is supported by an efficient benchmarking framework combining electrochemical and analytical methods, which can serve as a basis for further systematic coating studies.","PeriodicalId":33,"journal":{"name":"Chemistry of Materials","volume":"31 1","pages":""},"PeriodicalIF":8.6,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143590132","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

A Flexible Interpenetrated Diamondoid Metal–Organic Framework with Aromatic-Enriched Channels as a Preconcentrator for the Detection of Fluorinated Anesthetics

IF 8.6 2区材料科学

Chemistry of Materials Pub Date : 2025-03-11 DOI: 10.1021/acs.chemmater.4c03221

Danilo Marchetti, Nicolò Riboni, A. Ken Inge, Ocean Cheung, Mauro Gemmi, Enrico Dalcanale, Federica Bianchi, Chiara Massera, Alessandro Pedrini

{"title":"A Flexible Interpenetrated Diamondoid Metal–Organic Framework with Aromatic-Enriched Channels as a Preconcentrator for the Detection of Fluorinated Anesthetics","authors":"Danilo Marchetti, Nicolò Riboni, A. Ken Inge, Ocean Cheung, Mauro Gemmi, Enrico Dalcanale, Federica Bianchi, Chiara Massera, Alessandro Pedrini","doi":"10.1021/acs.chemmater.4c03221","DOIUrl":"https://doi.org/10.1021/acs.chemmater.4c03221","url":null,"abstract":"Flexible metal–organic frameworks (MOFs) are dynamic materials that combine long-range structural order with reversible stimulus-responsive phase transitions. In this study, we report the synthesis and characterization of two isoreticular flexible MOFs, TPPM-CPW(Me) and TPPM-CPW(Ph), constructed by combining the ligand tetra-4-(4-pyridyl)phenylmethane (TPPM) with specific Cu(II) paddle-wheel (CPW) secondary building units (SBUs). These MOFs exhibit reversible transitions between open- and closed-pore forms triggered by external stimuli, such as temperature- and pressure-induced guest removal and uptake. The stability of these frameworks is influenced by the residual equatorial groups on the Cu(II) SBUs, with phenyl-functionalized TPPM-CPW(Ph) displaying dynamic behavior characteristic of third-generation soft porous crystals. Notably, TPPM-CPW(Ph) exhibited high adsorption affinity toward fluorinated guests, including SF6 and volatile anesthetics (VAs) such as desflurane and sevoflurane. This material, when used in solid-phase microextraction (SPME) as fiber coating for the preconcentration of these VAs in air, outperformed commercial CAR/PDMS fibers, underscoring the potential of these versatile flexible MOFs in addressing environmental challenges associated with the use of volatile fluorinated compounds.","PeriodicalId":33,"journal":{"name":"Chemistry of Materials","volume":"3 1","pages":""},"PeriodicalIF":8.6,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143590128","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

A Flexible Interpenetrated Diamondoid Metal–Organic Framework with Aromatic-Enriched Channels as a Preconcentrator for the Detection of Fluorinated Anesthetics

IF 7.2 2区材料科学

Chemistry of Materials Pub Date : 2025-03-11 DOI: 10.1021/acs.chemmater.4c0322110.1021/acs.chemmater.4c03221

Danilo Marchetti, Nicolò Riboni, A. Ken Inge, Ocean Cheung, Mauro Gemmi, Enrico Dalcanale, Federica Bianchi, Chiara Massera* and Alessandro Pedrini*,

{"title":"A Flexible Interpenetrated Diamondoid Metal–Organic Framework with Aromatic-Enriched Channels as a Preconcentrator for the Detection of Fluorinated Anesthetics","authors":"Danilo Marchetti, Nicolò Riboni, A. Ken Inge, Ocean Cheung, Mauro Gemmi, Enrico Dalcanale, Federica Bianchi, Chiara Massera* and Alessandro Pedrini*, ","doi":"10.1021/acs.chemmater.4c0322110.1021/acs.chemmater.4c03221","DOIUrl":"https://doi.org/10.1021/acs.chemmater.4c03221https://doi.org/10.1021/acs.chemmater.4c03221","url":null,"abstract":"Flexible metal–organic frameworks (MOFs) are dynamic materials that combine long-range structural order with reversible stimulus-responsive phase transitions. In this study, we report the synthesis and characterization of two isoreticular flexible MOFs, TPPM-CPW(Me) and TPPM-CPW(Ph), constructed by combining the ligand tetra-4-(4-pyridyl)phenylmethane (TPPM) with specific Cu(II) paddle-wheel (CPW) secondary building units (SBUs). These MOFs exhibit reversible transitions between open- and closed-pore forms triggered by external stimuli, such as temperature- and pressure-induced guest removal and uptake. The stability of these frameworks is influenced by the residual equatorial groups on the Cu(II) SBUs, with phenyl-functionalized TPPM-CPW(Ph) displaying dynamic behavior characteristic of third-generation soft porous crystals. Notably, TPPM-CPW(Ph) exhibited high adsorption affinity toward fluorinated guests, including SF6 and volatile anesthetics (VAs) such as desflurane and sevoflurane. This material, when used in solid-phase microextraction (SPME) as fiber coating for the preconcentration of these VAs in air, outperformed commercial CAR/PDMS fibers, underscoring the potential of these versatile flexible MOFs in addressing environmental challenges associated with the use of volatile fluorinated compounds.","PeriodicalId":33,"journal":{"name":"Chemistry of Materials","volume":"37 6","pages":"2230–2240 2230–2240"},"PeriodicalIF":7.2,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acs.chemmater.4c03221","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143678641","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