Angewandte Chemie最新文献_第3页

BERICHTIGUNG: Correction to “Tandem Methanolysis and Catalytic Transfer Hydrogenolysis of Polyethylene Terephthalate to p-Xylene Over Cu/ZnZrOx Catalysts”

Angewandte Chemie Pub Date : 2025-02-14 DOI: 10.1002/ange.202502639

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Innentitelbild: Bridging Electrolyte Bulk and Interfacial Chemistry: Dynamic Protective Strategy Enable Ultra-Long Lifespan Aqueous Zinc Batteries (Angew. Chem. 10/2025)

Angewandte Chemie Pub Date : 2025-02-14 DOI: 10.1002/ange.202502397

Qing Wu, Jinlong Zhang, Song Yang, Fusheng Luo, Zeyu Yan, Xiude Liu, Haibo Xie, Prof. Jun Huang, Prof. Yiwang Chen

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Rücktitelbild: Monodisperse Chemical Oligophosphorylation of Peptides via Protected Oligophosphorimidazolide Reagents (Angew. Chem. 11/2025)

Angewandte Chemie Pub Date : 2025-02-14 DOI: 10.1002/ange.202502765

Kevin Qian, Björn Hanf, Prof. Christopher Cummins, Prof. Dorothea Fiedler

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Innentitelbild: In/Outside Catalytic Sites of the Pore Walls in One-Dimensional Covalent Organic Frameworks for Oxygen Reduction Reaction (Angew. Chem. 11/2025)

Angewandte Chemie Pub Date : 2025-02-14 DOI: 10.1002/ange.202502955

Shuai Yang, Zejin He, Xuewen Li, Bingbao Mei, Yifan Huang, Qing Xu, Zheng Jiang

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Rücktitelbild: Diastereoselective Polypseudorotaxane Formation with Planar Chiral Pillar[5]arenes via Co-crystallization Processes (Angew. Chem. 12/2025)

Angewandte Chemie Pub Date : 2025-02-14 DOI: 10.1002/ange.202502767

Kiichi Yasuzawa, Dr. Keisuke Wada, Prof. Dr. Shixin Fa, Prof. Dr. Yuuya Nagata, Dr. Kenichi Kato, Dr. Shunsuke Ohtani, Prof. Dr. Motohiro Mizuno, Prof. Dr. Tomoki Ogoshi

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An Organic Crystalline Ternary Pseudo-Heterojunction with Contrasting Luminescent and Mechanical Properties Prepared by Thermotropic Phase Transition

Angewandte Chemie Pub Date : 2025-02-13 DOI: 10.1002/ange.202500151

Jianqun Qi, Dr. Linfeng Lan, Prof. Dr. Hongyu Zhang

{"title":"An Organic Crystalline Ternary Pseudo-Heterojunction with Contrasting Luminescent and Mechanical Properties Prepared by Thermotropic Phase Transition","authors":"Jianqun Qi, Dr. Linfeng Lan, Prof. Dr. Hongyu Zhang","doi":"10.1002/ange.202500151","DOIUrl":"https://doi.org/10.1002/ange.202500151","url":null,"abstract":"Advancements in crystal engineering have enabled the precise tuning of the physical properties of organic crystals, thereby enhancing their potential in advanced optoelectronics. Here, we design an organic compound which crystallizes into distinct polymorphs with contrasting luminescent and mechanical behaviors. Controlled growth conditions yield flexible (Cry-O: orange fluorescence) and brittle (Cry-Y: yellow fluorescence) crystals which exhibit unique fluorescence shifts and reversible spectral changes between room and low temperatures, alongside unidirectional phase transitions upon thermal stimulation. The optical and mechanical differences between the polymorphs O and Y stem from their distinct molecular packing arrangements and intermolecular interactions. Notably, Cry-O undergoes sequential phase transitions upon heating to 98 and 132 °C, enabling the creation of a ternary “pseudo-heterojunction” structure, facilitating the integration of multiple functional phases into a single material. These findings not only enhance the understanding of structure–property relationships of organic materials but also demonstrate the potential of polymorphism-driven property tuning for optoelectronic devices, thermal management systems, and optical sensors.","PeriodicalId":7803,"journal":{"name":"Angewandte Chemie","volume":"137 13","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143688714","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A General Strategy for the Synthesis of Metal-Backboned Molecules with Different Metals

Angewandte Chemie Pub Date : 2025-02-13 DOI: 10.1002/ange.202502327

Yanruzhen Wu, Yifeng Zhang, Dr. Kaiwen Zeng, Xiangran Cheng, Jiatian Song, Prof. Huisheng Peng

引用次数: 0

Thermally Induced Reversible Martensitic Phase Transition and Self-Healing in Nickel Glycinamide Crystals

Angewandte Chemie Pub Date : 2025-02-13 DOI: 10.1002/ange.202421769

Darko Vušak, Prof. Panče Naumov, Želimir Jelčić, Prof. Dubravka Matković-Čalogović, Prof. Biserka Prugovečki

{"title":"Thermally Induced Reversible Martensitic Phase Transition and Self-Healing in Nickel Glycinamide Crystals","authors":"Darko Vušak, Prof. Panče Naumov, Želimir Jelčić, Prof. Dubravka Matković-Čalogović, Prof. Biserka Prugovečki","doi":"10.1002/ange.202421769","DOIUrl":"https://doi.org/10.1002/ange.202421769","url":null,"abstract":"Martensitic phase transitions and self-healing in molecular compounds are extremely rare, and while they carry potential for rapid energy transduction, they are currently found only by serendipity. Here, we report the observation of both phenomena in a coordination compound of glycinamide (Glyam), [Ni(H2O)2(Glyam)2]I2 (1). Upon cooling to 205–213 K, the high-temperature polymorph of this material (1RT) transforms into twinned crystals of the low-temperature polymorph (1LT(twinned)), while upon heating, it is converted back to 1RT in the temperature range 217–223 K. When this transformation occurs in single crystals, evolution of cracks is observed upon cooling that disappear upon heating. The forward transition 1RT→1LT(twinned) is completed in a few seconds, while the reverse one, 1LT(twinned)→1RT, proceeds up to several hours, contrary to the fast transition in polycrystalline samples. We determined the concomitant presence of 1RT and 1LT(twinned) in the same single crystal. The crystal structure analysis revealed complex inter- and intramolecular displacements of atoms during the transition. To the best of our knowledge, this is only the second report where a thermally induced reversible martensitic phase transition and self-healing are observed in crystals of a coordination compound, and indicates the potential generality of these extraordinary phenomena.","PeriodicalId":7803,"journal":{"name":"Angewandte Chemie","volume":"137 12","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ange.202421769","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143639131","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Metal−Organic Framework with Constrained Flexibility for Benchmark Separation of Hexane Isomers

Angewandte Chemie Pub Date : 2025-02-13 DOI: 10.1002/ange.202500519

Kuishan Wen, Jingyi Zhou, Tian Ke, Jinjian Li, Yuanyuan Jin, Qianglong Zhang, Zhiguo Zhang, Zongbi Bao, Qilong Ren, Qiwei Yang

{"title":"Metal−Organic Framework with Constrained Flexibility for Benchmark Separation of Hexane Isomers","authors":"Kuishan Wen, Jingyi Zhou, Tian Ke, Jinjian Li, Yuanyuan Jin, Qianglong Zhang, Zhiguo Zhang, Zongbi Bao, Qilong Ren, Qiwei Yang","doi":"10.1002/ange.202500519","DOIUrl":"https://doi.org/10.1002/ange.202500519","url":null,"abstract":"Flexible metal−organic frameworks (MOFs) are promising candidates for adsorptive separations, but achieving a balance among flexibility, adsorption capacity, and selectivity remains challenging. Herein, we report a novel flexible MOF, Ni(bhdc)(ted)0.5 (ZUL−C6), incorporating hybrid three-dimensional alkane-bridged ligands, which realizes high-capacity molecular sieving for hexane isomer separation - a critical process in the petroleum industry. The alkyl-rich, confined pore system within the ZUL−C6 framework facilitated a strong affinity for n-hexane and 3-methylpentane. However, the narrow pore size and the constrained flexibility limited the uptake of 2,2-dimethylbutane (<4.0 mg/g), accompanied by a high gate-opening pressure. The gating behavior was elucidated by guest-loaded single-crystal (SC) X-ray diffraction and density functional theory (DFT) simulations, which revealed a unique SC to SC transformation driven by the non-centrosymmetric rotation of the 3D bhdc linker and distortion of the metal cluster and pillar units, along with a high deformation energy barrier. As a result, ZUL−C6 exhibited not only significantly higher uptake and selectivity than the industrially used 5 A molecular sieve, but also the record-high nHEX/3MP breakthrough uptake (92.8/73.9 mg/g) and unprecedented 22DMB producing time (309.2 min/g, corresponding to the productivity of 770 mmol/kg and yield of 92.8 %) among reported MOFs.","PeriodicalId":7803,"journal":{"name":"Angewandte Chemie","volume":"137 12","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143639130","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Highly Effective and Durable Integrated-Chainmail Electrode for H2 Production through H2S Electrolysis

Angewandte Chemie Pub Date : 2025-02-13 DOI: 10.1002/ange.202502032

Mo Zhang, Zuochao Wang, Liumo Jiang, Xin Bo, Xiaoju Cui, Dehui Deng

{"title":"Highly Effective and Durable Integrated-Chainmail Electrode for H2 Production through H2S Electrolysis","authors":"Mo Zhang, Zuochao Wang, Liumo Jiang, Xin Bo, Xiaoju Cui, Dehui Deng","doi":"10.1002/ange.202502032","DOIUrl":"https://doi.org/10.1002/ange.202502032","url":null,"abstract":"H2S is a prevalent yet toxic gas commonly encountered during fossil fuel extraction, whose electrolysis not only addresses pollution concerns but also facilitates hydrogen production. However, the advancement of H2S electrolysis at high current density has been impeded by the lack of stable and highly active electrodes that can endure the corrosive effects of H2S poisoning. Herein, we present an integrated-chainmail electrode that features dual-level chainmail structure with graphene encapsulating nickel foam (Ni@NC foam) to enhance H2S electrolysis. The electrode comprises a primary chainmail, formed by graphene coating on the surface of nickel foam, and a secondary chainmail, created by graphene encapsulating nickel nanoparticles. This integrated-chainmail structure significantly enhances both the activity and stability of nickel foam, which delivers an industrial-scale high current density exceeding 1 A cm−2 at 1.12 V versus reversible hydrogen electrode, above five times higher than nickel foam. Moreover, the Ni@NC foam remains stable over 300 hours of test, demonstrating a lifespan at least ten times longer than nickel foam. In a demo for H2S removal from simulated natural gas, the Ni@NC foam as the electrodes exhibits a hydrogen production rate of 272 ml min−1, while reducing electricity consumption by 43 % compared with traditional water electrolysis.","PeriodicalId":7803,"journal":{"name":"Angewandte Chemie","volume":"137 13","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143688712","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0