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IF 9.4 1区化学

Chinese Chemical Letters Pub Date : 2025-04-25 DOI: 10.1016/S1001-8417(25)00285-2

引用次数: 0

Visible light-induced deuteration of arenes via thianthrenation 可见光诱导的硫代溴化芳烃的氘化

IF 9.4 1区化学

Chinese Chemical Letters Pub Date : 2025-04-23 DOI: 10.1016/j.cclet.2025.111255

Jia Peng , Guo-Ping Luo , Chao Wu , Congyang Wang

引用次数: 0

DFT calculations and dynamic NMR revealed the coalescent NMR phenomena of the 6/6/6/9 tetracyclic merosesquiterpenoids with an unprecedented 9,15-dioxatetracyclo[8.5.3.04,17.014,18]octadecane core skeleton DFT计算和动态核磁共振揭示了6/6/6/9四环半萜类化合物具有前所未有的9,15-二氧四环[8.5.3.04,17.014,18]十八烷核心骨架的聚结核磁共振现象

IF 9.4 1区化学

Chinese Chemical Letters Pub Date : 2025-04-18 DOI: 10.1016/j.cclet.2025.111234

Hanqi Zhang , Biao Gao , Yuanyuan Feng , Guijuan Zheng , Zhijun Liu , Lichun Kong , Junjun Liu , Haji Akber Aisa , Guangmin Yao

{"title":"DFT calculations and dynamic NMR revealed the coalescent NMR phenomena of the 6/6/6/9 tetracyclic merosesquiterpenoids with an unprecedented 9,15-dioxatetracyclo[8.5.3.04,17.014,18]octadecane core skeleton","authors":"Hanqi Zhang , Biao Gao , Yuanyuan Feng , Guijuan Zheng , Zhijun Liu , Lichun Kong , Junjun Liu , Haji Akber Aisa , Guangmin Yao","doi":"10.1016/j.cclet.2025.111234","DOIUrl":"10.1016/j.cclet.2025.111234","url":null,"abstract":"<div><div>Two pairs of novel 6/6/6/9 tetracyclic merosesquiterpenoid enantiomers, dauroxonanols A (1) and B (2), possessing an unprecedented 9,15-dioxatetracyclo[8.5.3.04,17.014,18]octadecane core skeleton, were isolated from Rhododendron dauricum. The nuclear magnetic resonance (NMR) spectra of 1 and 2 showed very broad resonances, and 13C NMR spectrum of 1 exhibited only 13 instead of 22 carbon resonances. These broadening or missing NMR resonances led to a great challenge to elucidate their structures using NMR data analysis. Their structures and absolute configurations of 1 and 2 were finally determined by single crystal X-ray diffraction analysis, chiral separation, and electronic circular dichroism (ECD) calculations. Plausible biosynthetic pathways for 1 and 2 are proposed. Conformational analysis, density functional theory (DFT) calculations, and dynamic NMR assigned the coalescent NMR phenomena of 1 and 2 to the conformational changes of the flexible oxonane ring. Dauroxonanols A (1) and B (2) showed potent α-glucosidase inhibitory activities, 2–8 times potent than acarbose, an antidiabetic drug targeting α-glucosidase in clinic.</div></div>","PeriodicalId":10088,"journal":{"name":"Chinese Chemical Letters","volume":"36 9","pages":"Article 111234"},"PeriodicalIF":9.4,"publicationDate":"2025-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144571536","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

V2CTX MXene-derived ammonium vanadate with robust carbon skeleton for superior rate aqueous zinc-ion batteries V2CTX mxene衍生钒酸铵具有坚固的碳骨架，用于高倍率水性锌离子电池

IF 9.4 1区化学

Chinese Chemical Letters Pub Date : 2025-04-17 DOI: 10.1016/j.cclet.2025.111231

Xiaojun Wang , Yizhou Zhang , Linwei Guo , Jianwei Li , Peng Wang , Lei Yang , Zhiming Liu

{"title":"V2CTX MXene-derived ammonium vanadate with robust carbon skeleton for superior rate aqueous zinc-ion batteries","authors":"Xiaojun Wang , Yizhou Zhang , Linwei Guo , Jianwei Li , Peng Wang , Lei Yang , Zhiming Liu","doi":"10.1016/j.cclet.2025.111231","DOIUrl":"10.1016/j.cclet.2025.111231","url":null,"abstract":"<div><div>Layered ammonium vanadate has become a promising cathode material for aqueous zinc ion batteries (ZIBs) due to its small mass and large ionic radius of ammonium ions as well as the consequent large layer spacing and high specific capacity. However, the irreversible de-ammoniation caused by N·H···O bonds damaged would impair cycle life of ZIBs and the strong electrostatic interaction between Zn2+ and V-O frame could slower the mobility of Zn2+. Furthermore, the thermal instability of ammonium vanadate also limits the use of common carbon coating modification method to solve the problem. Herein, V2CTX MXene was innovatively selected as a bifunctional source to in-situ derivatized (NH4)2V8O20·xH2O with amorphous carbon-coated (NHVO@C) via one-step hydrothermal method in relatively moderate temperature. The amorphous carbon shell derived from the V2CTX MXene as a conductive framework to effectively improve the diffusion kinetics of Zn2+ and the robust carbon skeleton could alleviate the ammonium dissolution during long-term cycling. As a result, zinc ion batteries using NHVO@C as cathode exhibit superior electrochemical performance. Moreover, the assembled foldable or high loading (10.2 mg/cm2) soft-packed ZIBs further demonstrates its practical application. This study provided new insights into the development of the carbon cladding process for thermally unstable materials in moderate temperatures.</div></div>","PeriodicalId":10088,"journal":{"name":"Chinese Chemical Letters","volume":"36 8","pages":"Article 111231"},"PeriodicalIF":9.4,"publicationDate":"2025-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144280510","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

AL5E: A breakthrough in broad-spectrum coronavirus inactivation through structure-guided design AL5E：通过结构引导设计实现冠状病毒广谱失活的突破

IF 9.4 1区化学

Chinese Chemical Letters Pub Date : 2025-04-16 DOI: 10.1016/j.cclet.2025.111221

Heng Gao, Jiwei Zhang, Peng Zhan, Xinyong Liu

引用次数: 0

Site-specific surface amination strategy facilitates biomimetic encapsulation of enzymes within hydrogen-bonded organic framework 位点特异性表面胺化策略促进了酶在氢键有机框架内的仿生包封

IF 9.4 1区化学

Chinese Chemical Letters Pub Date : 2025-04-16 DOI: 10.1016/j.cclet.2025.111223

Haoquan Huang , Haiting Chen , Xinran Dong , Yanbin Xu , Anlian Huang , Qiaoyi Cen , Huairou Zhu , Guosheng Chen , Wei Yi , Siming Huang , Gangfeng Ouyang

{"title":"Site-specific surface amination strategy facilitates biomimetic encapsulation of enzymes within hydrogen-bonded organic framework","authors":"Haoquan Huang , Haiting Chen , Xinran Dong , Yanbin Xu , Anlian Huang , Qiaoyi Cen , Huairou Zhu , Guosheng Chen , Wei Yi , Siming Huang , Gangfeng Ouyang","doi":"10.1016/j.cclet.2025.111223","DOIUrl":"10.1016/j.cclet.2025.111223","url":null,"abstract":"<div><div>Hydrogen-bonded framework (HOF) offers an attractive platform to encapsulate enzymes and stabilize their conformation, due to the advantages of mild synthesis conditions, tailorable pore structure, and backbone biocompatibility. However, the efficiency of this HOF approach relies on the interfacial interactions between enzyme guest and the ligand precursors, limiting its adaptability to enzymes with varying surface chemistry property. In this study, we report a site-specific surface modification strategy to positively tailor the enzyme surface charge, facilitating the biomimetic encapsulation of enzymes within HOF in situ. Both experimental results and computational simulation reveal that site-specific amination of enzyme surface’s acidic residues contributes to the interfacial accumulation of carboxylic ligand precursors in aqueous solutions via synergistic electrostatic and hydrogen bonding interactions. This substantially facilitates the in situ growth of porous HOF surrounding the aminated enzyme biotemplates, with up to 100 % enzyme loading efficiency. The resultant hydrogen-bonded biohybrid framework (HBF) retains high biocatalytic functions while exhibiting exceptional stability under harsh conditions. By leveraging the marked catalytic activity of GOx-NH2@HBF-1 and a H2O2-sensitive QD, a highly sensitive glucose fluorescence sensor is fabricated with a wide linear range (5–2000 µmol/L) and a low quantification limit of 5 µmol/L. This work presents a simple yet effective enzyme surface engineering approach for integrating enzyme into HOF, opening new avenues for the construction of multifunctional HOF biocomposites.</div></div>","PeriodicalId":10088,"journal":{"name":"Chinese Chemical Letters","volume":"36 9","pages":"Article 111223"},"PeriodicalIF":9.4,"publicationDate":"2025-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144587848","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

Asymmetric Büchner reaction and arene cyclopropanation via copper-catalyzed controllable cyclization of diynes 铜催化双炔可控环化的不对称b<s:1> chner反应及芳烃环丙烷化

IF 9.4 1区化学

Chinese Chemical Letters Pub Date : 2025-04-16 DOI: 10.1016/j.cclet.2025.111226

Yi-Kao Xu , Guo-Ping Luo , Liang-Bin Hu , Wei-Min He

引用次数: 0

Corrigendum to “Oxygen vacancy regulating transition mode of MIL-125 to facilitate singlet oxygen generation for photocatalytic degradation of antibiotics” [Chinese Chemical Letters 35 (2024) 109761] “氧空位调节MIL-125的过渡模式以促进光催化降解抗生素的单线态氧生成”的更正[中国化学快报35 (2024)109761]

IF 9.4 1区化学

Chinese Chemical Letters Pub Date : 2025-04-15 DOI: 10.1016/j.cclet.2025.110868

Shenghui Tu , Anru Liu , Hongxiang Zhang , Lu Sun , Minghui Luo , Shan Huang , Ting Huang , Honggen Peng

引用次数: 0

Cu0/Cuδ+ site construction and its catalytic role in acetylene hydrochlorination Cu0/Cuδ+位点的构建及其在乙炔加氢氯化反应中的催化作用

IF 9.4 1区化学

Chinese Chemical Letters Pub Date : 2025-04-15 DOI: 10.1016/j.cclet.2025.111208

Junchen Peng , Zhongyuan Guo , Dandan Dong, Yusheng Lu, Bao Wang, Fangjie Lu, Chaofeng Huang, Bin Dai

{"title":"Cu0/Cuδ+ site construction and its catalytic role in acetylene hydrochlorination","authors":"Junchen Peng , Zhongyuan Guo , Dandan Dong, Yusheng Lu, Bao Wang, Fangjie Lu, Chaofeng Huang, Bin Dai","doi":"10.1016/j.cclet.2025.111208","DOIUrl":"10.1016/j.cclet.2025.111208","url":null,"abstract":"<div><div>In view of the dearth of active components and the unsatisfactory dispersion of Cu-based catalysts, it is imperative to undertake a detailed investigation of catalysts with enhanced catalytic performance. In order to achieve a balance between the catalytic activity and stability in the reaction process, a series of P-atom doped Cu0/Cuδ+ binary Cu-based catalysts were prepared by means of heteroatom introduction and heat treatment. The introduction of P enhanced the stability of Cu during heat treatment, thereby inhibiting the excessive agglomeration of Cu. The structure of the Cu0/Cuδ+ binary catalyst was modified through heat treatment and HCl activation, and the relationship between its structure and catalytic activity was subsequently investigated. The activation process of HCl facilitated the conversion of the Cu0 state to the Cu-Cl state and augmented the valence state of Cu. The valence modulation of the Cu site by HCl during the reaction prevented the over-reduction of the Cu site by acetylene and enhanced the stability of the catalyst. The 3Cu/5CuP/AC-800 catalyst was operated for 50 h without significant deactivation under the reaction conditions of T = 180 °C, V(HCl)/V(C2H2) = 1.15 and GHSV(C2H2) = 180 h-1. This design strategy provides a novel reference point for further studies of CuCl2 based catalysts for acetylene hydrochlorination.</div></div>","PeriodicalId":10088,"journal":{"name":"Chinese Chemical Letters","volume":"36 8","pages":"Article 111208"},"PeriodicalIF":9.4,"publicationDate":"2025-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144223662","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

Controlling the extent of nanoparticle occlusion within calcite crystals via surface chemistry engineering 通过表面化学工程控制方解石晶体内纳米颗粒的封闭程度

IF 9.4 1区化学

Chinese Chemical Letters Pub Date : 2025-04-14 DOI: 10.1016/j.cclet.2025.111205

Xia Sun, Zixian Liang, Jiahao Zhang, Boxiang Peng, Bing Yu, Pei Liu, Biao Xiong, Jizhuang Wang, Yin Ning

{"title":"Controlling the extent of nanoparticle occlusion within calcite crystals via surface chemistry engineering","authors":"Xia Sun, Zixian Liang, Jiahao Zhang, Boxiang Peng, Bing Yu, Pei Liu, Biao Xiong, Jizhuang Wang, Yin Ning","doi":"10.1016/j.cclet.2025.111205","DOIUrl":"10.1016/j.cclet.2025.111205","url":null,"abstract":"<div><div>Directly occluding polymer nanoparticles into growing host crystals provides a versatile pathway for synthesizing polymer-inorganic composite crystals, where guest nanoparticles are distributed within the crystal matrix. However, systematically controlling the extent of nanoparticle occlusion within a host crystal remains a significant challenge. In this study, we employ a one-step, soap-free emulsion polymerization method to synthesize polyethyleneimine-functionalized poly(tert‑butyl methacrylate) (PtBMA/PEI) nanoparticles. These cationic nanoparticles are subsequently modified using formaldehyde to systematically tune the content of surface amine group via the Eschweiler-Clarke reaction. This approach yields a series of model nanoparticles that allow us to investigate how surface chemistry influences the extent of nanoparticle occlusion within calcite crystals. Our findings reveal that the extent of nanoparticle occlusion within calcite crystals is proportional to the surface amine group content. This study offers a new design rule for creating composite crystals with tailored compositions through a nanoparticle occlusion strategy.</div></div>","PeriodicalId":10088,"journal":{"name":"Chinese Chemical Letters","volume":"36 9","pages":"Article 111205"},"PeriodicalIF":9.4,"publicationDate":"2025-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144587494","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