Chem最新文献_第4页

New reactivity enables stereochemical inheritance 新的反应性使立体化学继承成为可能

IF 19.1 1区化学

Chem Pub Date : 2026-09-10 DOI: 10.1016/j.chempr.2026.103210

Zhe Dong

引用次数: 0

Chem at 10: Jie Wu 化学：吴洁

IF 19.1 1区化学

Chem Pub Date : 2026-09-10 DOI: 10.1016/j.chempr.2026.103160

Jie Wu

引用次数: 0

Chem at 10: Tanja Junkers

IF 19.1 1区化学

Chem Pub Date : 2026-09-10 DOI: 10.1016/j.chempr.2026.103252

Tanja Junkers

引用次数: 0

Cluster-enabled control of single-electron photoredox catalysis in reticular frameworks 网状结构中单电子光氧化还原催化的簇激活控制

IF 19.1 1区化学

Chem Pub Date : 2026-09-10 Epub Date: 2026-06-02 DOI: 10.1016/j.chempr.2026.103074

Clara Chinchilla-Garzón, Eva Rivera-Chao, Miguel Gomez-Mendoza, Bruno J.C. Vieira, Neyvis Almora-Barrios, Pol Gimeno-Fonquernie, Javier Castells-Gil, Rebecca Vismara, Jan Navrátil, Piotr Błoński, Víctor A. de la Peña O’Shea, João C. Waerenborgh, Carlos Martí-Gastaldo, Natalia M. Padial

{"title":"Cluster-enabled control of single-electron photoredox catalysis in reticular frameworks","authors":"Clara Chinchilla-Garzón, Eva Rivera-Chao, Miguel Gomez-Mendoza, Bruno J.C. Vieira, Neyvis Almora-Barrios, Pol Gimeno-Fonquernie, Javier Castells-Gil, Rebecca Vismara, Jan Navrátil, Piotr Błoński, Víctor A. de la Peña O’Shea, João C. Waerenborgh, Carlos Martí-Gastaldo, Natalia M. Padial","doi":"10.1016/j.chempr.2026.103074","DOIUrl":"10.1016/j.chempr.2026.103074","url":null,"abstract":"<div><div>Photoredox catalysis has emerged as a powerful strategy for promoting redox reactions under mild conditions, but its translation from homogeneous to heterogeneous catalysts in porous solids remains limited. Metal-organic frameworks (MOFs) offer unique opportunities to bridge this gap by combining tailorable photoactive architectures with high stability, large surface areas, and modular control over reactivity via component selection. Despite recent progress, most photocatalytic MOF-based systems have focused on water splitting or CO<sub>2</sub> reduction, whereas applications in organic synthesis remain virtually unexplored. Here, we report a titanium-iron MOF (MUV-1001) built from heterometallic TiFe<sub>2</sub> metal-oxo clusters that operates as an intrinsically active visible-light photoredox catalyst. This platform enables single-electron transfer reactivity under irradiation, as demonstrated in a decarboxylative Giese reaction, and it represents an example of noble-metal- and additive-free C–C bond formation mediated by a pristine crystalline reticular material. Our findings highlight the potential of cluster-based design to access intrinsically photoactive systems, where subtle changes in composition dictate reactivity, even across isostructural families.</div></div>","PeriodicalId":268,"journal":{"name":"Chem","volume":"12 9","pages":"Article 103074"},"PeriodicalIF":19.1,"publicationDate":"2026-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148624252","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Oxygen-atom replacement in non-strained cyclic ethers 非应变环醚中的氧原子置换

IF 19.1 1区化学

Chem Pub Date : 2026-09-10 Epub Date: 2026-03-30 DOI: 10.1016/j.chempr.2026.103000

Ying-Qi Zhang, Kang Zheng Yap, Shuo-Han Li, Felicia Wan Xin Lim, Ming Joo Koh

{"title":"Oxygen-atom replacement in non-strained cyclic ethers","authors":"Ying-Qi Zhang, Kang Zheng Yap, Shuo-Han Li, Felicia Wan Xin Lim, Ming Joo Koh","doi":"10.1016/j.chempr.2026.103000","DOIUrl":"10.1016/j.chempr.2026.103000","url":null,"abstract":"<div><div>Cyclic ethers are ubiquitous scaffolds in natural products and bioactive molecules. Exchanging the oxygen atom of a non-strained cyclic ether for another atom or group dramatically alters its properties and function. In practice, this is challenging to achieve owing to the lack of methods that selectively target inert endocyclic oxygen. Here, we disclose a phosphine-mediated strategy that promotes chemoselective oxygen-to-X (X = nitrogen, sulfur, selenium, or carbon) transmutation, directly transforming non-aromatic furans and pyrans into their <em>N</em>-heterocyclic, <em>S</em>-heterocyclic, <em>Se</em>-heterocyclic, and carbocyclic variants under mild conditions. Late-stage editing of <em>O</em>-heterocyclic pharmaceutical building blocks could be realized, offering a convenient gateway to various saturated heterocycles and carbocycles without the need to restart the synthesis from scratch. Mechanistic investigations reveal the <em>in-situ</em> generation of a bromophosphonium species that triggers deconstruction of the cyclic ether to form a dibromide electrophile, which then undergoes nucleophilic cyclization to assemble the new ring.</div></div>","PeriodicalId":268,"journal":{"name":"Chem","volume":"12 9","pages":"Article 103000"},"PeriodicalIF":19.1,"publicationDate":"2026-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147586340","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}

引用次数: 0

Trace-water-mediated formamidinium cation anchoring to regulate crystallization of tin-lead perovskite for efficient and stable photovoltaics 痕量水介导的甲脒阳离子锚定调节锡铅钙钛矿结晶的高效和稳定光伏

IF 19.1 1区化学

Chem Pub Date : 2026-09-10 Epub Date: 2026-03-27 DOI: 10.1016/j.chempr.2026.102964

Weilin Wu, Jiakang Zhang, Mingjun Ma, Mengjiao Lan, Yuanyuan Liao, Cheng Li, Jiahui Cheng, Huijie Cao, Wenjian Yan, Shuming Zhang, Mingzhe Zhu, Zhongmin Zhou

{"title":"Trace-water-mediated formamidinium cation anchoring to regulate crystallization of tin-lead perovskite for efficient and stable photovoltaics","authors":"Weilin Wu, Jiakang Zhang, Mingjun Ma, Mengjiao Lan, Yuanyuan Liao, Cheng Li, Jiahui Cheng, Huijie Cao, Wenjian Yan, Shuming Zhang, Mingzhe Zhu, Zhongmin Zhou","doi":"10.1016/j.chempr.2026.102964","DOIUrl":"10.1016/j.chempr.2026.102964","url":null,"abstract":"<div><div>Formamidinium (FA<sup>+</sup>) effusion and rapid crystallization are two main issues in Sn–Pb perovskite films. Trace amounts of water in the precursor solution catalyze an <em>in situ</em> reaction between benzylamine (BnNH<sub>2</sub>) and formamidinium iodide (FAI), forming BnFA<sup>+</sup> cations. The product retards nucleation and growth during annealing, producing Sn–Pb perovskite films that are more uniform, contain fewer trap states, and exhibit smaller energy offsets with adjacent charge-transport layers. Density functional theory calculations indicate that water creates a proton-shuttle pathway that halves the Gibbs free-energy barrier for intramolecular proton transfer, enabling the early covalent passivation of FA<sup>+</sup> sites. In addition, BnFAI shows stronger dissociation and solvation in the mixed solvent, simultaneously reducing both the crystallization rate and Sn<sup>2+</sup> oxidation. <em>In situ</em> ultraviolet-visible (UV-vis) measurements reveal a 30% decrease in the crystallization rate constant. As a result, devices incorporating the BnNH<sub>2</sub> additive achieve a champion power-conversion efficiency of 24.05% and demonstrate improved shelf and operational stability.</div></div>","PeriodicalId":268,"journal":{"name":"Chem","volume":"12 9","pages":"Article 102964"},"PeriodicalIF":19.1,"publicationDate":"2026-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147519112","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}

引用次数: 0

One catalyst, two geometries: Iridium catalysis enables stereodivergent synthesis of chiral Z- and E-allylated isochromanones 一种催化剂，两种几何形状：铱催化可以立体发散合成手性Z-和e -烯丙化的异色罗曼酮

IF 19.1 1区化学

Chem Pub Date : 2026-09-10 Epub Date: 2026-09-02 DOI: 10.1016/j.chempr.2026.103218

Jasper L. Tyler, Varinder K. Aggarwal

引用次数: 0

DNA-mediated force transmission for precise and efficient mechanochemical activation dna介导的力传递，用于精确和有效的机械化学激活

IF 19.1 1区化学

Chem Pub Date : 2026-09-10 Epub Date: 2026-03-03 DOI: 10.1016/j.chempr.2025.102920

Gyurin Kim, Arjuna Selvakumar, Johannes Hahmann, Banyu Firdaus Soeriawidjaja, Maria Riedner, Gianluca Calabrese, Jio Kang, Hae Gyun Lim, Hyun Wook Kang, Gregory I. Peterson, Andreas Herrmann, Minseok Kwak

{"title":"DNA-mediated force transmission for precise and efficient mechanochemical activation","authors":"Gyurin Kim, Arjuna Selvakumar, Johannes Hahmann, Banyu Firdaus Soeriawidjaja, Maria Riedner, Gianluca Calabrese, Jio Kang, Hae Gyun Lim, Hyun Wook Kang, Gregory I. Peterson, Andreas Herrmann, Minseok Kwak","doi":"10.1016/j.chempr.2025.102920","DOIUrl":"10.1016/j.chempr.2025.102920","url":null,"abstract":"<div><div>Mechanophores embedded in synthetic polymers enable force-mediated chemical transformations but often require extended sonication and complicated analysis. Here, we employ DNA as a programmable scaffold for mechanochemical force transmission to achieve efficient ultrasound-induced molecular cleavage. By designing DNA-mechanophore-DNA architectures with tunable lengths (100–1,000 bp) and different mechanophores, we achieve nearly complete scission (99.9% for constructs >250 bp) within 15 min. Scission occurs at mechanophore sites or off-site, depending on mechanophore reactivity. DNA sequencing and mass spectrometry confirm selective bond cleavage and provide molecular-level mechanistic insight. This DNA-based platform offers an efficient and precise tool for mechanophore characterization and demonstrates potential for biomedical applications under mild ultrasound conditions, including operation at clinical frequencies (1 MHz) in tissue-mimicking skin phantoms.</div></div>","PeriodicalId":268,"journal":{"name":"Chem","volume":"12 9","pages":"Article 102920"},"PeriodicalIF":19.1,"publicationDate":"2026-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148940618","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A CLEAN framework of photothermal evaporation-coupled catalysis 光热蒸发耦合催化的CLEAN框架

IF 19.1 1区化学

Chem Pub Date : 2026-09-10 Epub Date: 2026-08-17 DOI: 10.1016/j.chempr.2026.103188

Jia-Cheng E. Yang, Shengjie Han, Jinqiang Zhang, Yu-Ming Zheng, Shaobin Wang

{"title":"A CLEAN framework of photothermal evaporation-coupled catalysis","authors":"Jia-Cheng E. Yang, Shengjie Han, Jinqiang Zhang, Yu-Ming Zheng, Shaobin Wang","doi":"10.1016/j.chempr.2026.103188","DOIUrl":"10.1016/j.chempr.2026.103188","url":null,"abstract":"<div><div>Sunlight-driven photothermal water evaporation technology is currently reinventing the landscape of clean water and energy production. However, conventional photothermal evaporators primarily convert solar energy into latent heat for vapor generation, leaving the photochemical potential underutilized. This perspective introduces the concept of photothermal evaporation-coupled catalysis (PECC), in which the photothermal interface is augmented with catalytic functionality to achieve simultaneous sunlight-driven water purification and chemical upgrading. We first elucidate the physicochemical principles of energy partitioning for the synergy between solar water evaporation and catalysis and the materials chemistry principles for energy-efficient PECC design. Furthermore, we categorize the application scenarios of PECC based on interfacial reaction pathways, outline the unsystematized engineering principles of solar thermal management for PECC system integration, and finally propose the CLEAN paradigm to leverage the microscale principles of PECC and macroscale technoeconomic feasibility toward scalable, sustainable solar water-chemical factories.</div></div>","PeriodicalId":268,"journal":{"name":"Chem","volume":"12 9","pages":"Article 103188"},"PeriodicalIF":19.1,"publicationDate":"2026-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148756621","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Origins of universality of copper-catalyzed azide-alkyne cycloaddition 铜催化叠氮化物-炔环加成反应普遍性的起源

IF 19.1 1区化学

Chem Pub Date : 2026-09-10 Epub Date: 2026-09-03 DOI: 10.1016/j.chempr.2026.103209

Bogdan Ya. Karlinskii, Valentine P. Ananikov

引用次数: 0