{"title":"A Bifunctional Organic Photocatalyst for Efficient Single-Electron and Energy Transfer Activation.","authors":"Sumitava Mallik,Hailong Wang,Nunzio Matera,Bi-Xiao Li,Stefano Stagni,Paolo Melchiorre","doi":"10.1002/anie.202509770","DOIUrl":"https://doi.org/10.1002/anie.202509770","url":null,"abstract":"Bifunctional photocatalysts capable of mediating both single-electron transfer (SET) and energy transfer (EnT) processes are rare and typically metal-based. Here, we present 3-thioaryl-4hydroxycoumarins, a new family of cost-effective organic photocatalysts that leverage a stabilized charge-transfer (CT) excited state to achieve both strong reducing power and efficient energy transfer. The spatial separation of the HOMO and LUMO stabilizes the CT state, enhancing SET reactivity (E*red = -3.08 V vs SCE) while maintaining a sufficiently high triplet energy (ET = 67 kcal/mol) for EnT-driven transformations. This dual reactivity enables the activation of redox-inert substrates (Ered < -2.8 V vs SCE) via SET reduction, generating radicals suitable for diverse C-S, C-P, C-B, and C-C bondforming transformations, alongside EnT-based processes such as E/Z olefin isomerization and [2+2] photocycloadditions. Mechanistic studies, supported by photophysical and theoretical analyses, confirmed the catalyst's bifunctionality.","PeriodicalId":125,"journal":{"name":"Angewandte Chemie International Edition","volume":"6 1","pages":"e202509770"},"PeriodicalIF":16.6,"publicationDate":"2025-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144488238","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"MXene‐supported Ru–Ni: a Common Active Site for Hydrolysis, Hydrogen Oxidation, and Hydrogenation","authors":"Shuyan Guan, Yanyan Liu, Shuling Liu, Zechao Zhuang, Ruofan Shen, Huanhuan Zhang, Erjun Liang, Yanping Fan, Jianchun Jiang, Baozhong Liu, Yongfeng Wang, Dingsheng Wang, Baojun Li","doi":"10.1002/anie.202506869","DOIUrl":"https://doi.org/10.1002/anie.202506869","url":null,"abstract":"Insights into the activation and conversion of hydrogen using a single‐mode catalyst is crucial for advancing fuels and fine chemical production. In this paper, the activation and conversion of H2 molecular in hydrogen production and application were investigated on RuM (M = Ni, Co, Cu, Fe)‐MXene catalysts. RuM (M = Ni, Co, Cu, Fe) bimetallic nanoclusters were uniformly distributed on Ti3C2 MXene. The optimal Ru2.5Ni2.5‐Ti3C2 exhibites the highest turnover frequency (TOF) value of 1833 min‐1 toward ammonia borane (AB, NH3BH3) hydrolysis. Meanwhile, the catalysts also showed good catalytic activity in hydrogen oxidation reaction (HOR) and phenylacetylene hydrogenation. The high activity is originl from the acceleration of the catalytic process by RuNi clusters‐Ti3C2 and the promotion of molecular transport by the special interface of RuNi cluster‐MXene. The RuNi clusters‐Ti3C2 with suiable d‐band provide a dependable platform for the regulated activation and conversion of H2 molecules and various reaction intermediates. The competitiveness of nano‐cluster‐MXene catalytic material is showcased for activation and conversion of hydrogen. This research of reaction‐inducing adaptation uncovered the pathway to explore multi‐functional catalysts in energy, chemistry and materials applications.","PeriodicalId":125,"journal":{"name":"Angewandte Chemie International Edition","volume":"67 1","pages":"e202506869"},"PeriodicalIF":16.6,"publicationDate":"2025-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144488794","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Self‐Adapting Lattice Respiration Enabled by Crystal Design and d‐p Orbital Hybridization towards Highly Stable Rechargeable Aluminum Batteries","authors":"Huaizhi Wang, Yu Li, Bo Long, Shuqiang Li, Xueying Lu, Shijie Zhou, Feng Wu, Ying Bai, Chuan Wu","doi":"10.1002/anie.202510773","DOIUrl":"https://doi.org/10.1002/anie.202510773","url":null,"abstract":"Rechargeable aluminum batteries (RABs) are promising for large‐scale energy storage due to the appealing three‐electron transfer feature, low cost and high safety. However, the strong electrostatic interaction between Al3+ and host lattice induces severe lattice distortion and structural collapse, leading to poor cycle stability in RABs. Herein, we develop a new‐type FeWO4 cathode with a comprehensive consideration of the crystal structure and electronic structure. The three‐dimensional (3D) open framework and strong W–O covalent network of the FeWO4 greatly improve the storage of high charge density Al3+. Moreover, the d‐p orbital hybridization between the transition metal and oxygen facilitates electron delocalization, which effectively weakens the interaction with the trivalent cation (Al3+). Importantly, combining in situ characterizations and theoretical calculations, it is demonstrated that as‐prepared cathode exhibits a “self‐adapting lattice respiration” (SALR) effect. Specifically, the reversible W–O bond elongation/compression (Δd≈0.05 Å) during cycling reduces lattice strain and confines volume expansion to less than 3%. As results, the FeWO4 cathode delivers a high capacity of 192 mAh g–1 at 500 mA g–1 and long cycle life of over 2300 cycles with quiet low capacity decay of 0.01% per cycle in RABs.","PeriodicalId":125,"journal":{"name":"Angewandte Chemie International Edition","volume":"34 1","pages":"e202510773"},"PeriodicalIF":16.6,"publicationDate":"2025-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144488795","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Vacancy-Induced Atomic Diffusion in a Molecular Metal Cluster Complex.","authors":"Tetsuro Murahashi,Kosuke Iwata,Koshi Miyazawa,Kenta Kurashima,Hiroshige Yamaura,Bo Zhu,Yu Tian,Yuta Takahira,Koji Yamamoto,Tsubasa Omoda,Daisuke Hashizume,Shigeyoshi Sakaki","doi":"10.1002/anie.202507444","DOIUrl":"https://doi.org/10.1002/anie.202507444","url":null,"abstract":"The presence of atomic vacancies in a close-packed material is believed to allow the migration of atoms adjacent to the vacancies, which induces dynamics of atoms. However, it is not known whether atoms in discrete molecules can undergo vacancy-induced dynamics. We describe herein the generation of a close-packed Pd12 cluster complex [Pd12(C7H7)6][B(ArF)4]n (n = 2, 3) with a Pd-atom vacancy, and the observation of the diffusion of Pd atoms. Variable-temperature NMR analysis, X-ray structure analysis, and theoretical calculations indicate that an atomic vacancy is located at the surface sites of the Pd12 core, and that it migrates rapidly on the NMR timescale. This means that all 11 palladium atoms at the surface undergo self-diffusion with a low energy barrier. These results demonstrate, for the first time, that atomic diffusion occurs within a molecule through the vacancy mechanism.","PeriodicalId":125,"journal":{"name":"Angewandte Chemie International Edition","volume":"248 1","pages":"e202507444"},"PeriodicalIF":16.6,"publicationDate":"2025-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144488240","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A Dual-Atom La2 Catalyst for the Oxygen Reduction Reaction.","authors":"Jingru Sun,Tianmi Tang,Siying Zhang,Siyu Chen,Yingying Duan,Xue Bai,Xiaoqin Xu,Xiaodi Niu,Zhenlu Wang,Jingqi Guan","doi":"10.1002/anie.202509063","DOIUrl":"https://doi.org/10.1002/anie.202509063","url":null,"abstract":"Rare earth lanthanum element has large atomic radius, multi-shell orbital electrons, and Fenton-like reaction inertia, on which a localized high-coordination structure can be easily formed for the favorable adsorption of reaction intermediates. However, for single-atom lanthanum sites, due to the loss of all the outmost s and d electrons, the practically vacuous outmost orbitals are stable but sleepy for the oxygen reduction reaction (ORR). Here, we synthesize a novel dual-atom La catalyst onto N-doped graphene (La2-NG) by a Joule ultrafast heating method, which shows a half-wave potential of 0.893 V for the ORR. The La2-NG-assembled zinc-air battery demonstrates a great open circuit voltage of 1.52 V and a maximal power density of 192 mW cm-2. Operando X-ray absorption spectra reveal the change of valence states of La and the dynamic structural evolution of La2-N6 moiety embedded onto the graphene during the ORR, through which the adsorption/desorption of oxygen reduction intermediates can be reasonably regulated. Theoretical calculations further demonstrate that the La2-N6 structure can decrease the reaction energy barrier and promote charge transfer.","PeriodicalId":125,"journal":{"name":"Angewandte Chemie International Edition","volume":"16 1","pages":"e202509063"},"PeriodicalIF":16.6,"publicationDate":"2025-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144478657","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Regioreversed Carbosulfenylation of Fluoroalkenes via Nickel-Mediated Radical Sorting.","authors":"Chuan Zhu,Qian Liu,Nannan Wang,Rui Ma,Kai Chen,Patrick J Walsh,Kai Guo,Chao Feng","doi":"10.1002/anie.202509664","DOIUrl":"https://doi.org/10.1002/anie.202509664","url":null,"abstract":"Carbosulfenylation of olefins represents an important class of reactions for the synthesis of structurally diverse organosulfur compounds. Previous studies typically yield 1,2-regioselectivity. In the context of diversity-oriented synthesis, accessing the regioreversed products is desirable, significantly broadening the scope of these reactions. In this study, we report a nickel-catalyzed 2,1-carbosulfenylation of trifluoromethyl- and gem-difluoroalkenes, using free thiols and benzyl bromides as sulfur and carbon sources, respectively. The unusual regioselectivity observed is enabled by a 'radical sorting' mechanism. The Ni catalyst activates benzyl bromide to generate a benzylic radical that undergoes HAT with the thiol to form a sulfur-centered radical. The sulfur radical subsequently adds to the fluoroalkenes, resulting in an α-fluoroalkyl C-radical. This radical undergoes SH2 with a Ni-CH2Ar to form a C(sp3)-C(sp3) bond and quaternary center, ultimately producing valuable fluoroalkyl thioethers. Isotopic labeling experiments corroborate a hydrogen atom transfer (HAT) event within the working mechanism.","PeriodicalId":125,"journal":{"name":"Angewandte Chemie International Edition","volume":"10 1","pages":"e202509664"},"PeriodicalIF":16.6,"publicationDate":"2025-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144478659","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ziteng Guo, Hao Yu, Ningxu Han, Xinrui Zhang, Junjuan Shi, Ming Wang
{"title":"Length Ratio‐Driven Configurational Modulation of Heteroleptic Pd6L6L'6 Cages","authors":"Ziteng Guo, Hao Yu, Ningxu Han, Xinrui Zhang, Junjuan Shi, Ming Wang","doi":"10.1002/anie.202508367","DOIUrl":"https://doi.org/10.1002/anie.202508367","url":null,"abstract":"Biomolecular configurational modulation is essential for maintaining the stability and functionality of biological systems. Drawing inspiration from this natural phenomenon, we present a strategy to modulate the configurations of heteroleptic Pd6L6L'6 cages by systematically varying the ligand length ratio (r). Although theoretical analysis suggests that these Pd6L6L'6 assemblies could adopt up to 48 possible configurational isomers, we successfully modulated the thermodynamic preference between two dominant configurations (Type‐A and Type‐B) by implementing energetic differentiation through careful optimization of r. Specifically, the system exclusively forms Type‐A cages at r = 1.0, whereas Type‐B becomes the predominant configuration when r ≥ 1.4. Control experiments demonstrate that the introduction of bulky steric groups does not induce configuration changes. This research offers valuable insights and serves as a useful reference for the design and configurational modulation of heteroleptic cages.","PeriodicalId":125,"journal":{"name":"Angewandte Chemie International Edition","volume":"160 1","pages":"e202508367"},"PeriodicalIF":16.6,"publicationDate":"2025-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144479128","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Copper-Tailored Molybdenum-Nickel Catalyst Boosts Hydrogen Oxidation and Suppresses Parasitic Oxygen Reduction for Durable Fuel Cells.","authors":"Min-Rui Gao,Lei Zhu,Xiao-Long Zhang,Yu Yang,Ye-Cheng Li,Ye-Hua Wang,Hui-Kun Yan,Fei-Yue Gao,Yu-Cai Zhang,Zhi-Zheng Wu,Shu-Ping Sun,Pu-Gan Lu,Wanjie Song,Xiaolin Ge,Tongwen Xu,Kai-Bin Tang","doi":"10.1002/anie.202508535","DOIUrl":"https://doi.org/10.1002/anie.202508535","url":null,"abstract":"Numerous existing strategies struggle to mitigate reverse-current decay (RCD) during startup and shutdown in polymer electrolyte fuel cells to avoid cathode corrosion, but the added system complexity and cost are drawbacks. Here we report that modification of a molybdenum-nickel alloy through the doping of copper enables a non-noble electrocatalyst (MoNi3.6Cu0.4) that efficiently catalyzes hydrogen oxidation reaction (HOR) while catalytically inactive toward oxygen reduction reaction (ORR) in alkaline media, making it ideal for fuel-cell anode because the instantaneous interfacial potential jump originated from the parasitic ORR during device startup/shutdown can be surmounted. The catalyst, when assembled in the anode of an anion exchange membrane fuel cell, manifests substantially improved corrosion-resistant ability compared with that of state-of-the-art carbon-supported platinum (Pt/C) catalyst. The basis for the achieved performances reveals to be the copper dopants that increase the hydrogen bonding of interfacial water for enhanced HOR, yet weaken molecular oxygen adsorption while stabilizing hydroxyl adsorption for ORR suppression.","PeriodicalId":125,"journal":{"name":"Angewandte Chemie International Edition","volume":"45 1","pages":"e202508535"},"PeriodicalIF":16.6,"publicationDate":"2025-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144478689","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Laura Bothof, Xiaofang Gong, Marrit E. Onclin, Peter Fodran, Gerrit J. Poelarends
{"title":"Engineered C‐N Lyases for Stereoselective Synthesis of Tertiary Amines","authors":"Laura Bothof, Xiaofang Gong, Marrit E. Onclin, Peter Fodran, Gerrit J. Poelarends","doi":"10.1002/anie.202507311","DOIUrl":"https://doi.org/10.1002/anie.202507311","url":null,"abstract":"Optically pure N‐functionalized α‐amino acids are valuable chiral building blocks for pharmaceuticals, nutraceuticals, and agrochemicals. Ethylenediamine‐N,N‐disuccinic acid lyase from Chelativorans sp. BNC1 catalyzes the addition of a wide range of aliphatic and aromatic primary amines to fumarate, producing the corresponding enantioenriched N‐substituted L‐aspartic acids. In this work, the enzyme was subjected to iterative cycles of site‐saturation mutagenesis and screened for increased activity for the addition of 2‐((methylamino)methyl)aniline to fumarate. The final variant displayed an activity of 3 orders of magnitude higher compared to the wild‐type enzyme. Unexpectedly, the enzyme catalyzed the hydroamination of fumarate with the aliphatic secondary amine of the starting substrate, rather than with the aromatic primary amine, leading to the formation of a tertiary amine. Exploring the substrate scope showed that the enzyme accepts various substituted N‐methyl‐1‐phenylmethanamines for the hydroamination of fumarate, yielding N,N‐disubstituted L‐aspartic acids in high optical purity (up to >99% ee). Furthermore, we showed that the enzyme accepts several ortho‐substituted anilines that were previously not accepted by the wild‐type enzyme, yielding the corresponding N‐arylated L‐aspartic acids in high enantiomeric excess (>99% ee). This serendipitous finding enables a new strategy for the biocatalytic synthesis of tertiary amines, unlocked within the C‐N lyase toolbox.","PeriodicalId":125,"journal":{"name":"Angewandte Chemie International Edition","volume":"101 1","pages":"e202507311"},"PeriodicalIF":16.6,"publicationDate":"2025-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144479123","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}