Angewandte Chemie最新文献_第4页

Metabolism-inspired chemical reaction networks for chemically driven dissipative oligoesterification

Angewandte Chemie Pub Date : 2025-02-15 DOI: 10.1002/ange.202425407

Yeonsoo Lim, Gyunam Park, Hojin An, Jonghwa Han, Joonhyun Bae, Ji-Hyun Kim, Yan Lee, Kyungtae Kang, Jaeyoung Sung, Sunbum Kwon

引用次数: 0

Electrocatalytic Acetylene Semi-Hydrogenation to Ethylene with High Energy Efficiency

Angewandte Chemie Pub Date : 2025-02-15 DOI: 10.1002/ange.202423381

Cong Dou, Yanmei Huang, Bohang Zhao, Weiwei Lei, Prof. Bin Zhang, Prof. Yifu Yu

{"title":"Electrocatalytic Acetylene Semi-Hydrogenation to Ethylene with High Energy Efficiency","authors":"Cong Dou, Yanmei Huang, Bohang Zhao, Weiwei Lei, Prof. Bin Zhang, Prof. Yifu Yu","doi":"10.1002/ange.202423381","DOIUrl":"https://doi.org/10.1002/ange.202423381","url":null,"abstract":"Electrocatalytic acetylene semi-hydrogenation (EASH) provides a petroleum-independent strategy for ethylene production. However, the challenges of high overpotentials and strong hydrogen evolution competition reaction over conventional electrocatalysts at industrial current densities result in substantial energy consumption, limiting the practical application of EASH technology. Herein, zinc-doped copper catalysts are designed and prepared via a facile impregnation and electroreduction relay method. The as-prepared Cu-2.7Zn catalyst exhibits an ethylene partial current density of −0.29 A cm−2 with a Faradaic efficiency of 96 % and a reaction potential of −0.62 V versus reversible hydrogen electrode (RHE), surpassing the previously reported electrocatalysts. The combined results of experimental tests and theoretical calculations demonstrate zinc doping significantly enhances acetylene adsorption and accelerates reaction kinetics, leading to a notable decrease in overpotential. Furthermore, the increased *H-*H binding energy barrier and the improved ethylene desorption on Cu-2.7Zn effectively suppress hydrogen evolution and acetylene over-hydrogenation, contributing to the enhancement of ethylene Faradaic efficiency.","PeriodicalId":7803,"journal":{"name":"Angewandte Chemie","volume":"137 14","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143761941","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

Rücktitelbild: Air-Mediated Biomimetic Synthesis of Polyhydroxyalkanoate with C4 Diol (Angew. Chem. 8/2025)

Angewandte Chemie Pub Date : 2025-02-14 DOI: 10.1002/ange.202502402

Huilin Xie, Kaibin Zhong, Shihao Niu, Xiaoxu Li, Zexu Hu, Guang Xiao, Prof. Yifu Huang, Prof. Hongjie Zhang, Prof. Yuan Liu, Prof. Hefeng Zhang, Prof. Qiuquan Cai

引用次数: 0

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

引用次数: 0

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

引用次数: 0

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

引用次数: 0

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

引用次数: 0

Selective and Efficient Upcycling of Polyesters from Waste Plastic Blends Enabled by a Rationally Designed Manganese Pincer Catalyst

Angewandte Chemie Pub Date : 2025-02-14 DOI: 10.1002/ange.202502923

Dr. Yue Hu, Dr. Yanwei Gu, Yongjing Dong, Yiqing Wang, Juanfang Xu, Yingying Han, Dr. Chijian Zhang, Prof. Dr. Yinjun Xie

{"title":"Selective and Efficient Upcycling of Polyesters from Waste Plastic Blends Enabled by a Rationally Designed Manganese Pincer Catalyst","authors":"Dr. Yue Hu, Dr. Yanwei Gu, Yongjing Dong, Yiqing Wang, Juanfang Xu, Yingying Han, Dr. Chijian Zhang, Prof. Dr. Yinjun Xie","doi":"10.1002/ange.202502923","DOIUrl":"https://doi.org/10.1002/ange.202502923","url":null,"abstract":"Herein, we report a new class of earth-abundant pincer manganese catalysts that not only enable the efficient conversion of single-component post-consumer polyesters with a turnover number (TON) of up to 5300, but more importantly, allow the selective upcycling of polyesters from waste plastic blends (e.g., nylon, PA; polyethylene, PE; polyurethane, PU; polyvinyl chloride, PVC; cotton) or contaminants such as pigment, aluminum, or glass into highly valuable oxygenated products under mild conditions. Detailed mechanistic studies combined with DFT calculations revealed that the exceptional efficiency of this protocol is due to the use of rationally designed quinaldine-based PNNH-type Mn complexes with an extended π-system and an N−H moiety on the side arm to simultaneously enhance the stability and reactivity of the catalyst. In addition, the incorporation of dual metal-ligand cooperation (MLC) relay catalysis more effectively facilitates the key steps of this transformation, including H2 activation and hydrogen bond-assisted hydride transfer.","PeriodicalId":7803,"journal":{"name":"Angewandte Chemie","volume":"137 14","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143762071","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

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

引用次数: 0

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