IF 23.5 1区化学

Chem Pub Date : 2025-09-24 DOI: 10.1016/j.chempr.2025.102757

Yuan Liang, Shuang-Feng Song, Siyu Liu, Zhi-Liang Shen, Xiao-Feng Wu

引用次数: 0

Unlocking the synthesis of homochiral carborane-fused boraphenanthrenes 解锁同手性碳硼烷-融合硼菲蒽的合成

IF 23.5 1区化学

Chem Pub Date : 2025-09-24 DOI: 10.1016/j.chempr.2025.102779

Zheng Zhu, Yangjian Quan

引用次数: 0

Achieving well-ordered microstructure and enhanced conductivities in n-doped conjugated polymers via dual-affinity dopant 通过双亲和掺杂剂实现n掺杂共轭聚合物的有序微观结构和增强电导率

IF 23.5 1区化学

Chem Pub Date : 2025-09-23 DOI: 10.1016/j.chempr.2025.102755

Chen-Kai Pan, Yi-Fan Huang, Zi-Di Yu, Ze-Fan Yao, Chi-Yuan Yang, Jie-Yu Wang, Jian Pei

{"title":"Achieving well-ordered microstructure and enhanced conductivities in n-doped conjugated polymers via dual-affinity dopant","authors":"Chen-Kai Pan, Yi-Fan Huang, Zi-Di Yu, Ze-Fan Yao, Chi-Yuan Yang, Jie-Yu Wang, Jian Pei","doi":"10.1016/j.chempr.2025.102755","DOIUrl":"https://doi.org/10.1016/j.chempr.2025.102755","url":null,"abstract":"Doping is a key approach to adjusting the electrical conductivities of polymer devices. However, the disruption to the microstructure of conjugated polymers from counterions of the dopant is the crucial factor limiting performance improvement. Herein, we propose a dual-affinity strategy for dopant design and present a novel n-type dopant, pTAM, with a 2-aminobenzimidazole triaminomethane structure. This pTAM dopant can significantly improve the electrical conductivity of several classic conjugated polymers with a 40%–240% increase in electrical conductivities compared with polymers doped by the widely used dopant 1,3-dimethyl-2-phenylbenzimidazoline (N-DMBI), reaching 83.3 ± 5.1 S cm<sup>−1</sup>. The enhanced performance is attributed to the matched interaction between pTAM cation and doped conjugated polymer, maintaining a well-ordered microstructure. Our work emphasizes the importance of the dopant-polymer microstructure relationship to the electrical performance, providing a corresponding effective strategy of dopant design for organic electronics and modern semiconductors.","PeriodicalId":268,"journal":{"name":"Chem","volume":"2 1","pages":""},"PeriodicalIF":23.5,"publicationDate":"2025-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145116788","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

Catalytic manipulation of reversibility and irreversibility in a supramolecular reaction network to control the self-assembly outcome 在超分子反应网络中催化操纵可逆性和不可逆性以控制自组装结果

IF 23.5 1区化学

Chem Pub Date : 2025-09-17 DOI: 10.1016/j.chempr.2025.102741

Tsukasa Abe, Satoshi Takahashi, Runyu Chai, Hirofumi Sato, Shuichi Hiraoka

引用次数: 0

Distal peptide elongation by a protease-like ligase and two distinct carrier proteins 远端肽延伸由蛋白酶样连接酶和两个不同的载体蛋白

IF 23.5 1区化学

Chem Pub Date : 2025-09-16 DOI: 10.1016/j.chempr.2025.102740

Finn Gude, Annkathrin Bohne, Maria Dell, Jonathan Franke, Kyle L. Dunbar, Michael Groll, Christian Hertweck

{"title":"Distal peptide elongation by a protease-like ligase and two distinct carrier proteins","authors":"Finn Gude, Annkathrin Bohne, Maria Dell, Jonathan Franke, Kyle L. Dunbar, Michael Groll, Christian Hertweck","doi":"10.1016/j.chempr.2025.102740","DOIUrl":"https://doi.org/10.1016/j.chempr.2025.102740","url":null,"abstract":"Closthioamide (CTA) is a potent antibiotic with a unique polythioamide scaffold produced by <em>Ruminiclostridium cellulolyticum</em>. Unlike classical non-ribosomal peptide synthetases (NRPSs), which use modular adenylation and condensation domains, CTA biosynthesis proceeds through non-canonical standalone enzymes. Central to this process is the papain-like ligase CtaG, which catalyzes amide bond formation between two distinct peptidyl carrier proteins (PCPs): CtaH, presenting para-hydroxybenzoic acid (PHBA), and CtaE, carrying a tri-β-alanine ((βAla)<sub>3</sub>) chain. Using biochemical assays, chemical probes, crystallography, and mutational analysis, we show that CtaG operates via a ping-pong mechanism involving an enzyme-bound intermediate. A single substrate tunnel mediates directional transfer, enabling distal chain elongation that mirrors solid-phase peptide synthesis. Structure-based genome mining revealed homologous enzymes in the biosynthetic pathways of petrobactin, butirosin, and methylolanthanin. Together, our findings uncover a previously overlooked class of thiotemplated ligases and provide a mechanistic blueprint for engineering ribosome-independent peptide assembly lines.","PeriodicalId":268,"journal":{"name":"Chem","volume":"36 1","pages":""},"PeriodicalIF":23.5,"publicationDate":"2025-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145068133","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

Precisely constructing asymmetric triple atoms for highly efficient electrocatalysis 精确构造不对称三原子，用于高效电催化

IF 19.6 1区化学

Chem Pub Date : 2025-09-11 DOI: 10.1016/j.chempr.2025.102498

Jingyan Zhang , Zhongxin Song , Xiaozhang Yao , Yi Guan , Ziwei Huo , Ning Chen , Lei Zhang , Xueliang Sun

{"title":"Precisely constructing asymmetric triple atoms for highly efficient electrocatalysis","authors":"Jingyan Zhang , Zhongxin Song , Xiaozhang Yao , Yi Guan , Ziwei Huo , Ning Chen , Lei Zhang , Xueliang Sun","doi":"10.1016/j.chempr.2025.102498","DOIUrl":"10.1016/j.chempr.2025.102498","url":null,"abstract":"<div><div><span>Triple-atom catalysts (TACs) are promising for surpassing the activity of normal single-atom and dual-atom catalysts. However, the rational design and construction of TACs remain challenging. Herein, we developed asymmetric Pt-Ru-Co triple atoms (TAs) by using selective atomic layer deposition technology<span>. Compared with the corresponding single-atom and dual-atom counterparts, they demonstrate superior electrocatalytic performance in both the hydrogen evolution reaction<span> (HER) and hydrogen oxidation reaction (HOR). </span></span></span><span><em>Operando</em></span><span> X-ray absorption spectroscopy (XAS) revealed that the heterogeneous atoms within Pt-Ru-Co TAs have strong interactions and serve as active centers, synergistically accelerating reaction kinetics. Additionally, theoretical calculations indicate that introducing Co atoms effectively optimizes the </span><em>d</em><span><span> orbital electronic structure of Pt and Ru, endowing enhanced catalytic activity of the Pt-Ru-Co TAs. This work presents asymmetric Pt-Ru-Co TAs with excellent </span>electrocatalytic activity and provides new insights into the catalytic mechanism of TACs.</span></div></div>","PeriodicalId":268,"journal":{"name":"Chem","volume":"11 9","pages":"Article 102498"},"PeriodicalIF":19.6,"publicationDate":"2025-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143703588","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

N-Heterocyclic carbene-phosphinidenes in main-group chemistry 主基团化学中的n-杂环碳杂膦

IF 19.6 1区化学

Chem Pub Date : 2025-09-11 DOI: 10.1016/j.chempr.2025.102649

Huaiyuan Zhu , Shigeyoshi Inoue

引用次数: 0

A fully light-driven approach to separate carbon dioxide from emission streams 一种完全光驱动的方法，从排放流中分离二氧化碳

IF 19.6 1区化学

Chem Pub Date : 2025-09-11 DOI: 10.1016/j.chempr.2025.102583

Bayu I.Z. Ahmad , Kiser Z. Colley , Andrew J. Musser , Phillip J. Milner

引用次数: 0

Conventional versus singlet-triplet Kondo effect in Blatter radical molecular junctions: Zero-bias anomalies and magnetoresistance 布拉特自由基分子结中的常规与单重态-三重态近藤效应：零偏置异常和磁电阻

IF 19.6 1区化学

Chem Pub Date : 2025-09-11 DOI: 10.1016/j.chempr.2025.102500

Gautam Mitra , Jueting Zheng , Karen Schaefer , Michael Deffner , Jonathan Z. Low , Luis M. Campos , Carmen Herrmann , Theo A. Costi , Elke Scheer

{"title":"Conventional versus singlet-triplet Kondo effect in Blatter radical molecular junctions: Zero-bias anomalies and magnetoresistance","authors":"Gautam Mitra , Jueting Zheng , Karen Schaefer , Michael Deffner , Jonathan Z. Low , Luis M. Campos , Carmen Herrmann , Theo A. Costi , Elke Scheer","doi":"10.1016/j.chempr.2025.102500","DOIUrl":"10.1016/j.chempr.2025.102500","url":null,"abstract":"<div><div>The Blatter radical has been suggested as a building block in future molecular spintronic devices because of its radical character and expected long spin lifetime. However, whether its radical character is maintained in single-molecule junctions depends on the environment. Here, we demonstrate the ability to retain the open-shell nature of the Blatter radical in a two-terminal device by the appearance of a Kondo resonance in transport spectroscopy. Additionally, a high negative magnetoresistance is observed in junctions that do not reveal a zero-bias anomaly. By combining distance-dependent and magnetic-field-dependent measurements and accompanying quantum-chemical and quantum-transport calculations, we show that both findings, the negative magnetoresistance and the Kondo features, can be consistently explained by a singlet-triplet Kondo model. Our findings provide the possibility of using the Blatter radical in a two-terminal system under cryogenic conditions and also reveal the magnetotransport properties emerging from different configurations of the molecule inside a junction.</div></div>","PeriodicalId":268,"journal":{"name":"Chem","volume":"11 9","pages":"Article 102500"},"PeriodicalIF":19.6,"publicationDate":"2025-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143713534","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

Syngas chemistry: Rational design of tandem reaction pathway for directional hydrocarbon synthesis 合成气化学：定向合成烃串联反应途径的合理设计

IF 19.6 1区化学

Chem Pub Date : 2025-09-11 DOI: 10.1016/j.chempr.2025.102552

Junjie Su , Chang Liu , Haibo Zhou , Lin Zhang , Wenqian Jiao , Su Liu , Yangdong Wang , Zaiku Xie

{"title":"Syngas chemistry: Rational design of tandem reaction pathway for directional hydrocarbon synthesis","authors":"Junjie Su , Chang Liu , Haibo Zhou , Lin Zhang , Wenqian Jiao , Su Liu , Yangdong Wang , Zaiku Xie","doi":"10.1016/j.chempr.2025.102552","DOIUrl":"10.1016/j.chempr.2025.102552","url":null,"abstract":"<div><div>Syngas to hydrocarbons, especially olefins and aromatics, is an important platform technology linking raw carbon resources to terminal materials. This perspective summarizes the differences between Fischer-Tropsch synthesis and the coupling tandem pathway and identifies respective merits and defects. The Fischer-Tropsch pathway is a traditional conversion technology with metals or metal oxides as the catalytic active components that is suitable for synthesizing mixed hydrocarbon products. The coupling tandem pathway is a continuous process centered around the generation, migration, and transformation of intermediates. Matching the optimal reaction temperature for both intermediate generation and transformation is a prerequisite for the highly selective synthesis of hydrocarbons with specific carbon numbers. Designing a migration process with a shorter distance, less resistance, and a smoother path is an effective strategy to improve overall syngas conversion efficiency in tandem reactions, which is also crucial for enhancing the competitiveness of the coupling pathway.</div></div>","PeriodicalId":268,"journal":{"name":"Chem","volume":"11 9","pages":"Article 102552"},"PeriodicalIF":19.6,"publicationDate":"2025-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143867260","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

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