Chinese Chemical Letters最新文献_第2页

Stabilized carbon radical-mediated three-component functionalization of amino acid/peptide derivatives

IF 9.4 1区化学

Chinese Chemical Letters Pub Date : 2025-02-11 DOI: 10.1016/j.cclet.2025.110936

Shaofeng Gong , Zi-Wei Deng , Chao Wu , Wei-Min He

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Harnessing the interfacial sulfur-edge and metal-edge sites in ZnIn2S4/MnS heterojunctions boosts charge transfer for photocatalytic hydrogen production

IF 9.4 1区化学

Chinese Chemical Letters Pub Date : 2025-02-05 DOI: 10.1016/j.cclet.2025.110922

Yueting Ma , Zhiyan Feng , Yuxin Dong , Zhiyong Yan , Hou Wang , Yan Wu

{"title":"Harnessing the interfacial sulfur-edge and metal-edge sites in ZnIn2S4/MnS heterojunctions boosts charge transfer for photocatalytic hydrogen production","authors":"Yueting Ma , Zhiyan Feng , Yuxin Dong , Zhiyong Yan , Hou Wang , Yan Wu","doi":"10.1016/j.cclet.2025.110922","DOIUrl":"10.1016/j.cclet.2025.110922","url":null,"abstract":"<div><div>Rapid carrier recombination and slow charge transfer dynamics have significantly reduced the performance of photocatalytic hydrogen production. Construction of heterojunctions <em>via</em> utilizing the sulfur-edge and metal-edge sites of metal sulfide semiconductor for improving photocatalytic activity remains a significant challenge. Herein, a novel ZnIn<sub>2</sub>S<sub>4</sub>/MnS S-scheme heterojunction was prepared by hydrothermal synthesis to accelerate charge carrier transfer for efficient photocatalysis. Notably, ZnIn<sub>2</sub>S<sub>4</sub>/MnS exhibited excellent photocatalytic hydrogen evolution activity (7.95 mmol g<sup>−1</sup> h<sup>−1</sup>) under visible light irradiation (≥420 nm), up to 4.7 times higher than that of pure ZnIn<sub>2</sub>S<sub>4</sub>. Additionally, cycling experiments showed that ZM-2 remained high stability after four cycles. Density-functional theory (DFT) calculations and <em>in situ</em> XPS results confirm the formation of S-scheme heterojunction, indicating that the tight interfacial contact between ZnIn<sub>2</sub>S<sub>4</sub> and MnS with the presence of Mn-S bonds (the unsaturated Mn edges of MnS and the uncoordinated S atoms in the edge of ZnIn<sub>2</sub>S<sub>4</sub>) promoted faster charge transfer. Besides, the unsaturated S atom on the surface of MnS is an active site with strong H<sup>+</sup> binding ability, which can effectively reduce the overpotential or activation barrier for hydrogen evolution. This study illustrates the critical influence of the interfacial Mn-S bond on the ZnIn<sub>2</sub>S<sub>4</sub>/MnS S-scheme heterojunction to achieve efficient photocatalytic hydrogen production and provides relevant guidance for carrying out rational structural/interfacial modulation.</div></div>","PeriodicalId":10088,"journal":{"name":"Chinese Chemical Letters","volume":"36 6","pages":"Article 110922"},"PeriodicalIF":9.4,"publicationDate":"2025-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143704876","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}

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Recent advances in nanomedicine therapy for bacterial pneumonia

IF 9.4 1区化学

Chinese Chemical Letters Pub Date : 2025-02-04 DOI: 10.1016/j.cclet.2025.110920

Weiqian Jin , Lin Liao , Tao Qin , Xiaoxuan Guan , Huyang Gao , Peng Liang , Ming Gao , Junyu Lu

{"title":"Recent advances in nanomedicine therapy for bacterial pneumonia","authors":"Weiqian Jin , Lin Liao , Tao Qin , Xiaoxuan Guan , Huyang Gao , Peng Liang , Ming Gao , Junyu Lu","doi":"10.1016/j.cclet.2025.110920","DOIUrl":"10.1016/j.cclet.2025.110920","url":null,"abstract":"<div><div>Bacterial pneumonia is one of the most common infectious diseases, a great threat to the health of children and the elderly. In the clinic, due to the extensive use of antibiotics, multi-drug-resistant bacteria have increased in large numbers, seriously affects the treatment of patients with bacterial pneumonia. With the development of nanomedicine, it shows great potential in the treatment of bacterial pneumonia. In this review, it initially comprehensively describes the pathological process of bacterial pneumonia and the current status of its clinical treatment. Then it summarizes the strategies of nanomedicine for the treatment of bacterial pneumonia, including inorganic nanomaterials, polymer nanoparticles, natural source nanomaterials and artificial antimicrobial peptides, with a focus on novel nanomaterials for the treatment of bacterial pneumonia (biomimetic nanomaterials, nanovaccines and genetically engineered nanomaterials). Finally, the prospect of nanomedicine for bacterial pneumonia therapy is discussed in the hope of providing new ideas for the clinical treatment of bacterial pneumonia.</div></div>","PeriodicalId":10088,"journal":{"name":"Chinese Chemical Letters","volume":"36 6","pages":"Article 110920"},"PeriodicalIF":9.4,"publicationDate":"2025-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143724944","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

IFC - Editorial Board/ Publication info

IF 9.4 1区化学

Chinese Chemical Letters Pub Date : 2025-02-01 DOI: 10.1016/S1001-8417(24)01206-3

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DFT calculation for organic semiconductor-based gas sensors: Sensing mechanism, dynamic response and sensing materials 基于有机半导体的气体传感器的 DFT 计算：传感机理、动态响应和传感材料

IF 9.4 1区化学

Chinese Chemical Letters Pub Date : 2025-01-28 DOI: 10.1016/j.cclet.2025.110906

Zhongchao Zhou , Jian Song , Yinghao Xie , Yuqian Ma , Hong Hu , Hui Li , Lei Zhang , Charles H. Lawrie

{"title":"DFT calculation for organic semiconductor-based gas sensors: Sensing mechanism, dynamic response and sensing materials","authors":"Zhongchao Zhou , Jian Song , Yinghao Xie , Yuqian Ma , Hong Hu , Hui Li , Lei Zhang , Charles H. Lawrie","doi":"10.1016/j.cclet.2025.110906","DOIUrl":"10.1016/j.cclet.2025.110906","url":null,"abstract":"<div><div>Organic semiconductor materials have demonstrated extensive potential in the field of gas sensors due to the advantages including designable chemical structure, tunable physical and chemical properties. Through density functional theory (DFT) calculations, researchers can investigate gas sensing mechanisms, optimize, and predict the electronic structures and response characteristics of these materials, and thereby identify candidate materials with promising gas sensing applications for targeted design. This review concentrates on three primary applications of DFT technology in the realm of organic semiconductor-based gas sensors: (1) Investigating the sensing mechanisms by analyzing the interactions between gas molecules and sensing materials through DFT, (2) simulating the dynamic responses of gas molecules, which involves the behavior on the sensing interface using DFT combined with other computational methods to explore adsorption and diffusion processes, and (3) exploring and designing sensitive materials by employing DFT for screening and predicting chemical structures, thereby developing new sensing materials with exceptional performance. Furthermore, this review examines current research outcomes and anticipates the extensive application prospects of DFT technology in the domain of organic semiconductor-based gas sensors. These efforts are expected to provide valuable insights for further in-depth exploration of DFT applications in sensor technology, thereby fostering significant advancements and innovations in the field.</div></div>","PeriodicalId":10088,"journal":{"name":"Chinese Chemical Letters","volume":"36 6","pages":"Article 110906"},"PeriodicalIF":9.4,"publicationDate":"2025-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143704150","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}

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Enhanced durability of a novel thiol-epoxy network thermosets with excellent hygrothermal and chemical resistance 提高新型硫醇-环氧网络热固性塑料的耐久性，使其具有优异的耐湿热性和耐化学性

IF 9.4 1区化学

Chinese Chemical Letters Pub Date : 2025-01-27 DOI: 10.1016/j.cclet.2025.110905

Chunshi He , Linqing Li , Yuanrong Sun , Xuefang Wang , Jie Ren , Jianbo Li

{"title":"Enhanced durability of a novel thiol-epoxy network thermosets with excellent hygrothermal and chemical resistance","authors":"Chunshi He , Linqing Li , Yuanrong Sun , Xuefang Wang , Jie Ren , Jianbo Li","doi":"10.1016/j.cclet.2025.110905","DOIUrl":"10.1016/j.cclet.2025.110905","url":null,"abstract":"<div><div>Epoxy resin is widely used in electronic packaging due to its exceptional performance, particularly the low-temperature curable thiol/epoxy system, which effectively minimizes thermal damage to sensitive electronic components. However, the majority of commercial thiol curing agents contain hydrolysable ester bonds and lack rigid structures, which induces most of thiol/epoxy systems still suffering from unsatisfactory heat resistance and hygrothermal resistance, significantly hindering their application in electronic packaging. In this study, we synthesized a tetrafunctional thiol compound, bis[3-(3-sulfanylpropyl)-4-(3-sulfanylpropoxy)phenyl]sulfone (TMBPS) with rigid and ester-free structures to replace traditional commercial thiol curing agents, pentaerythritol tetra(3-mercaptopropionate) (PETMP). Compared to the PETMP/epoxy system, the TMBPS/epoxy system exhibited superior comprehensive properties. The rigid structures of bisphenol S-type tetrathiol enhanced the heat resistance and mechanical properties of TMBPS/epoxy resin cured products, outperforming those of PETMP/epoxy resin cured products. Notably, the glass transition temperature of TMBPS/epoxy resin cured products was 74.2 °C which was 11.8 °C higher than that of PETMP cured products. Moreover, the ester-free structure in TMBPS contributed to its enhanced resistance to chemicals and hygrothermal conditions. After undergoing 1000 h of high-temperature and high-humidity aging, the tensile strength and adhesion strength of TMBPS-cured products were 73.33 MPa and 3.39 MPa, respectively exceeding 100% and 40% of their initial values, while PETMP-cured products exhibited a complete loss of both tensile strength and adhesion strength. This study provides a strategy for obtaining thermosetting polymers that can be cured at low temperatures and exhibit excellent comprehensive properties.</div></div>","PeriodicalId":10088,"journal":{"name":"Chinese Chemical Letters","volume":"36 6","pages":"Article 110905"},"PeriodicalIF":9.4,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143704151","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}

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Metal single-atom catalysts derived from silicon-based materials for advanced oxidation applications

IF 9.4 1区化学

Chinese Chemical Letters Pub Date : 2025-01-21 DOI: 10.1016/j.cclet.2025.110898

Hanghang Zhao , Wenbo Qi , Xin Tan , Xing Xu , Fengmin Song , Xianzhao Shao

{"title":"Metal single-atom catalysts derived from silicon-based materials for advanced oxidation applications","authors":"Hanghang Zhao , Wenbo Qi , Xin Tan , Xing Xu , Fengmin Song , Xianzhao Shao","doi":"10.1016/j.cclet.2025.110898","DOIUrl":"10.1016/j.cclet.2025.110898","url":null,"abstract":"<div><div>Enhancing the corrosion resistance of carriers within Fenton-like systems and inhibiting the migration and aggregation of single atoms in reaction environments are essential for maintaining both high activity and stability at catalytic sites, thus meeting fundamental requirements for practical application. The Fenton-like process of activating various strong oxidants by silicon-based single atom catalysts (SACs) prepared based on silicon-based materials (mesoporous silica, silicon-based minerals, and organosilicon materials) has unique advantages such as structural stability (especially important under strong oxidation conditions) and environmental protection. In this paper, the preparation strategies for the silicon-based SACs were assessed first, and the structural characteristics of various silicon-based SACs are systematically discussed, their application process and mechanism in Fenton-like process to achieve water purification are investigated, and the progress of Fenton-like process in density functional theory (DFT) of silicon-based derived single atom catalysts is summarized. In this paper, the preparation strategies and applications of silicon-based derived SACs are analyzed in depth, and their oxidation activities and pathways to different pollutants in water are reviewed. In addition, this paper also summarizes the device design and application of silicon-based derived SACs, and prospects the future development of silicon-based SACs in Fenton-like applications.</div></div>","PeriodicalId":10088,"journal":{"name":"Chinese Chemical Letters","volume":"36 6","pages":"Article 110898"},"PeriodicalIF":9.4,"publicationDate":"2025-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143830257","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

Iron-catalyzed CH activation: A sustainable approach to efficient organic synthesis

IF 9.4 1区化学

Chinese Chemical Letters Pub Date : 2025-01-20 DOI: 10.1016/j.cclet.2025.110869

Qiao Song , Xue Peng , Zhouyu Wang , Leyong Wang

引用次数: 0

Optimizing CsPbBr3 perovskite solar cell interface and performance through tetraphenylethene derivatives

IF 9.4 1区化学

Chinese Chemical Letters Pub Date : 2025-01-09 DOI: 10.1016/j.cclet.2025.110838

Sheng Tang , Mingyue Liao , Weihai Sun , Jihuai Wu , Jiamin Lu , Yiming Xie

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Microenvironment regulation of copper sites by chelating hydrophobic polymer for electrosynthesis of ethylene 通过螯合疏水聚合物调节用于乙烯电合成的铜位点微环境

IF 9.4 1区化学

Chinese Chemical Letters Pub Date : 2025-01-09 DOI: 10.1016/j.cclet.2025.110836

Lei Zhang , Chenyang Kou , Kun Ni , Yiwen Chen , Tongchuan Zhang , Baoliang Zhang

{"title":"Microenvironment regulation of copper sites by chelating hydrophobic polymer for electrosynthesis of ethylene","authors":"Lei Zhang , Chenyang Kou , Kun Ni , Yiwen Chen , Tongchuan Zhang , Baoliang Zhang","doi":"10.1016/j.cclet.2025.110836","DOIUrl":"10.1016/j.cclet.2025.110836","url":null,"abstract":"<div><div>Molecular catalysts can effectively steer the electrocatalytic acetylene semihydrogenation into ethylene, but realizing high Faradaic efficiency (FE) at industrial current densities remains a challenge. Herein, we report a ligand engineering strategy that utilizes polymeric <em>N</em>‑heterocyclic carbene (NHC) as a hydrophobic ligand to modulate the microenvironment of Cu sites. This polymeric NHC imparts appropriate hydrophobic properties for the chelated Cu sites, thereby moderating the H<sub>2</sub>O transport and enabling easy access of acetylene. Consequently, the polymeric NHC chelated Cu exhibits an FE<sub>ethylene</sub> of ∼97% at a current density of 500 mA/cm<sup>2</sup> in a flow cell. Particularly in a zero-gap reactor, the FE<sub>ethylene</sub> consistently exceeds 86% across current densities from 100 mA/cm<sup>2</sup> to 400 mA/cm<sup>2</sup>, reaching an optimal FE<sub>ethylene</sub> of 98% at 200 mA/cm<sup>2</sup> and achieving durable operation for 155 h at 100 mA/cm<sup>2</sup>. This work provides a promising paradigm to regulate the microenvironment of molecular catalysts for improving electrocatalytic performances under industrial current densities.</div></div>","PeriodicalId":10088,"journal":{"name":"Chinese Chemical Letters","volume":"36 6","pages":"Article 110836"},"PeriodicalIF":9.4,"publicationDate":"2025-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143704211","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