Chinese Journal of Chemistry最新文献_第4页

Synthesis of Indole-Fused Eight-Membered Oxa-Rings via Palladium-Catalyzed Asymmetric [4+4] Cycloaddition of Indole-2,3-Quinodimethanes with 2-Alkylidenetrimethylene Carbonates 钯催化吲哚-2,3-喹二甲烷与 2-亚烷基三亚甲基碳酸酯的不对称 [4+4] 环加成法合成吲哚融合的八分子 Oxa-Rings

IF 5.5 1区化学

Chinese Journal of Chemistry Pub Date : 2024-09-16 DOI: 10.1002/cjoc.202400764

Xinhao Lu, Yi Wang, Chenghan He, Yang-Zi Liu, Wei-Ping Deng

引用次数: 0

Chemoenzymatic Synthesis of Common Legionaminic Acid−Containing Pentasaccharide of Capsular Polysaccharides from Acinetobacter baumannii K27 and K44† 用化学酶法合成鲍曼不动杆菌 K27 和 K44† 胶囊多糖中常见的含军团胺酸的五糖

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Chinese Journal of Chemistry Pub Date : 2024-09-16 DOI: 10.1002/cjoc.202400794

Jiarong Peng, Tianhui Hao, Wenjing Ma, Zhuojia Xu, Tiehai Li

{"title":"Chemoenzymatic Synthesis of Common Legionaminic Acid−Containing Pentasaccharide of Capsular Polysaccharides from Acinetobacter baumannii K27 and K44†","authors":"Jiarong Peng, Tianhui Hao, Wenjing Ma, Zhuojia Xu, Tiehai Li","doi":"10.1002/cjoc.202400794","DOIUrl":"https://doi.org/10.1002/cjoc.202400794","url":null,"abstract":"<i>Acinetobacter baumannii</i> infections pose a great threat to public health owing to upsurging antibiotic resistance. Capsular polysaccharides (CPS) are major virulence determinants of pathogenic bacteria and have attracted much attention as potential targets for vaccine development. However, the obtainability of structurally well-defined CPS-related oligosaccharides remains challenging. Herein, we report an efficient chemoenzymatic strategy for the first total synthesis of common CPS pentasaccharide repeating unit of <i>Acinetobacter baumannii</i> K27 and K44, containing a difficult-to-construct α-linked 5,7-di-<i>N</i>-acetyllegionaminic acid (Leg5,7Ac<sub>2</sub>) residue. The chemical synthesis of a branched tetrasaccharide precursor was accomplished by flexible orthogonal protecting-group manipulations and stereocontrolled glycosylations. Furthermore, the enzyme-catalyzed stereoselective installment of legionaminic acid residue into the tetrasaccharide, using one-pot multienzyme (OPME) synthesis system to produce sugar nucleotide CMP-Leg5,7diN<sub>3</sub> and subsequent α2,6-sialyltransferase-catalyzed glycosylation, was achieved to synthesize the pentasaccharide.","PeriodicalId":151,"journal":{"name":"Chinese Journal of Chemistry","volume":"49 1","pages":""},"PeriodicalIF":5.4,"publicationDate":"2024-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142266912","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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Regulating Molecular Structure of S,N-Heteroacene Non-fullerene Acceptors to Achieve Efficient Photoelectric Properties† 调节 S,N-杂芳香族非富勒烯受体的分子结构以实现高效光电特性†。

IF 5.4 1区化学

Chinese Journal of Chemistry Pub Date : 2024-09-16 DOI: 10.1002/cjoc.202400699

Mingtao Liu, Peipei Zhu, Shiting Lai, Xiage Zhang, Yuang Fu, Ling Xue, Dan Liu, Kui Feng, Xinhui Lu, Xugang Guo, Xunfan Liao, Yiwang Chen

{"title":"Regulating Molecular Structure of S,N-Heteroacene Non-fullerene Acceptors to Achieve Efficient Photoelectric Properties†","authors":"Mingtao Liu, Peipei Zhu, Shiting Lai, Xiage Zhang, Yuang Fu, Ling Xue, Dan Liu, Kui Feng, Xinhui Lu, Xugang Guo, Xunfan Liao, Yiwang Chen","doi":"10.1002/cjoc.202400699","DOIUrl":"https://doi.org/10.1002/cjoc.202400699","url":null,"abstract":"The ternary strategy has demonstrated its efficacy in improving charge transport in organic solar cells (OSCs). Here, three novel non-fullerene acceptors, SN6C9-4F, SN6C9-4Cl and SN6C10-4F, based on S,N-heteroacene linear backbone were designed and synthesized. The three acceptors exhibit excellent molecular coplanarity, high crystallinity and possess a deep-lying lowest unoccupied molecular orbital energy level, which is beneficial for charge transport and injection in organic field-effect transistors (OFETs). Notably, the OFET devices based on all three acceptors achieved impressive electron mobilities, with SN6C10-4F achieving up to 0.73 cm<sup>2</sup>·V<sup>–1</sup>·s<sup>–1</sup>, which is one of the highest values among A-D-A type small molecules. In addition, the OSCs device based on PBDB-T:SN6C9-4F exhibited the best power conversion efficiency of 12.07% owing to its optimal morphology and enhanced charge transport. Moreover, the incorporation of SN6C9-4F into the efficient PM6:L8-BO binary system to form ternary OSCs resulted in extended absorption range, enhanced donor crystallization, improved and more balanced charge transport, ultimately leading to an improvement of PCE from 17.78% to 18.32%. This study highlights the potential of developing acceptors with distinct structures from Y-series acceptors to broaden absorption and regulate donor crystallization, providing a novel approach to enhance the PCE of OSCs.","PeriodicalId":151,"journal":{"name":"Chinese Journal of Chemistry","volume":"110 1","pages":""},"PeriodicalIF":5.4,"publicationDate":"2024-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142266909","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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Inside Cover Picture 封面内页图片

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Chinese Journal of Chemistry Pub Date : 2024-09-15 DOI: 10.1002/cjoc.202490202

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Electrochemical Carboarylation of Activated Alkenes with CO2 and Electron-deficient Aryl Bromides 活化烯与二氧化碳和缺电子芳基溴的电化学羧化反应

IF 5.5 1区化学

Chinese Journal of Chemistry Pub Date : 2024-09-10 DOI: 10.1002/cjoc.202400661

Zhaoliang Yang, Chunlei Liu, Cheng Zhong, Jianye Zhang, Shengzhang Liu, mingming Yu, yangyang Li, Hong Yi, Aiwen Lei

引用次数: 0

Boosting Photogenerated Electrons Transfer from FeVO4 to Peroxymonosulfate via Cu Doping for Stable Degradation of Organic Contaminants 通过掺杂铜促进 FeVO4 向过硫酸盐的光生电子转移，稳定降解有机污染物

IF 5.5 1区化学

Chinese Journal of Chemistry Pub Date : 2024-09-10 DOI: 10.1002/cjoc.202400669

Zhou Zhong, Xiang-Ji Liu, Li Ma, Zi-Jian Zhan, Yu-Xin Yuan, Heng-Jian Zhang, Feng-Ying Cai, Yi-Dong Hou, Jian Lü, Rong Cao

{"title":"Boosting Photogenerated Electrons Transfer from FeVO4 to Peroxymonosulfate via Cu Doping for Stable Degradation of Organic Contaminants","authors":"Zhou Zhong, Xiang-Ji Liu, Li Ma, Zi-Jian Zhan, Yu-Xin Yuan, Heng-Jian Zhang, Feng-Ying Cai, Yi-Dong Hou, Jian Lü, Rong Cao","doi":"10.1002/cjoc.202400669","DOIUrl":"10.1002/cjoc.202400669","url":null,"abstract":"<div>\u0000 \u0000 <p>Electron transfer is an important way to activate persulfate. Currently, the electrons for persulfate activation mainly originate from organic contaminants or the catalyst itself, which can lead to selective activation of persulfate or oxidation of the catalyst, respectively, and thus become a bottleneck restricting its application. In this work, Cu−doped FeVO<sub>4</sub> (Cu−FVO) was prepared, and the results showed that Cu doping can significantly improve the photocatalytic activity and stability of FVO for peroxymonosulfate (PMS) activation. The optimized Cu−FVO/PMS/light system exhibited a high BPA degradation rate that is 4.3 times higher than that of the FVO/PMS/light. This system manifested a broad applicability to various organic contaminants even with complex matrix. Photoelectrochemical analysis and DFT theoretical calculations revealed that Cu doping boosted the photogenerated charge separation and the adsorption of PMS on FVO. Furthermore, Cu doping led to the establishment of an electron transfer channel from Cu−FVO to PMS, through which photogenerated electrons achieved an efficient PMS activation. Meanwhile, holes were consumed by organic contaminants to avoid the oxidation of catalyst. These collectively enhanced the photocatalytic activity and stability of Cu−FVO, which also maintained high catalytic activity even after 20 cycling degradation reactions.</p>\u0000 <p>\u0000 </p>\u0000 </div>","PeriodicalId":151,"journal":{"name":"Chinese Journal of Chemistry","volume":"42 24","pages":"3201-3210"},"PeriodicalIF":5.5,"publicationDate":"2024-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142195658","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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Skeleton Rearranged and Oxygenated ent-Rosane Diterpenoids with Antiadipogenic Activity from Euphorbia milii 大戟科植物中具有抗脂肪生成活性的骨架重排和氧合的ent-Rosane二萜类化合物

IF 5.5 1区化学

Chinese Journal of Chemistry Pub Date : 2024-09-10 DOI: 10.1002/cjoc.202400749

Qin-Qin Song, Yue Guo, Peng Sun, Yao-Yue Fan, Kai-Long Ji

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Divergent Assembly of Functionalized Pyrazolo[1,5-a]pyridine Derivatives via [3+2] Cyclization of N-Aminopyridinium Salts with Various Unsaturated Hydrocarbons 通过 N-氨基吡啶鎓盐与各种不饱和碳氢化合物的 [3+2] 环化作用组装功能化的吡唑并[1,5-a]吡啶衍生物

IF 5.5 1区化学

Chinese Journal of Chemistry Pub Date : 2024-09-10 DOI: 10.1002/cjoc.202400741

Xiang Liu, Shaohong Ma, Shi Yan, Xiaotian Shi, Shuting Li, Yanlong Ma, Hua Cao

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To Maximize Luminescence for an Efficient Organic Solar Cell† 最大限度地提高高效有机太阳能电池的发光效率†。

IF 5.5 1区化学

Chinese Journal of Chemistry Pub Date : 2024-09-10 DOI: 10.1002/cjoc.202400543

Yifei Geng, Tengfei Li, Zhenzhen Zhang, Yuze Lin

{"title":"To Maximize Luminescence for an Efficient Organic Solar Cell†","authors":"Yifei Geng, Tengfei Li, Zhenzhen Zhang, Yuze Lin","doi":"10.1002/cjoc.202400543","DOIUrl":"10.1002/cjoc.202400543","url":null,"abstract":"<div>\u0000 \u0000 <section>\u0000 \u0000 <h3> Comprehensive Summary</h3>\u0000 \u0000 <p>With the continuous development of photovoltaic materials, organic solar cells (OSCs) have made remarkable advancements, surpassing a power conversion efficiency (PCE) of 20%. However, the PCEs of OSCs remain lower than that of inorganic solar cells due to significant energy losses, mainly stemming from the relatively large non-radiative recombination losses (usually be expressed as ∆<i>E</i><sub>3</sub>), resulting in low open-circuit voltages. This can be achieved by reducing non-radiative recombination, and hereby increasing the electroluminescence quantum efficiency (EQE<sub>EL</sub>) of the photo-active layer. This review analyzes the significance of luminescence efficiency in achieving high-performance OSCs by examining the reciprocal relationship between ∆<i>E</i><sub>3</sub> and EQE<sub>EL</sub>. High-efficiency organic solar cells can also be used as effective organic light-emitting diodes (OLEDs). The discussion provides insights into the influencing factors of EQE<sub>EL</sub> and the mechanisms for adjusting various parameters, which include enhancements in photoluminescence quantum yield and the proportion of radiative excitons. The objective is to offer insights into the crucial role of luminescence performance in OSC development, guiding researchers toward developing novel photovoltaic materials or optimization strategies to enhance the luminescence performance of the active layer in OSCs, fostering the simultaneous advancement of OSCs and OLEDs.</p>\u0000 \u0000 <p>\u0000 </p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Key Scientists</h3>\u0000 \u0000 <p>\u0000 \u0000 </p>\u0000 </section>\u0000 </div>","PeriodicalId":151,"journal":{"name":"Chinese Journal of Chemistry","volume":"42 23","pages":"3157-3168"},"PeriodicalIF":5.5,"publicationDate":"2024-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142195523","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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Catalytic Asymmetric [4+2] Cyclization of Hydroxyphenyl Indolinone with Azlactone to Construct Spirooxindole δ-Lactone 催化羟苯基吲哚啉酮与氮杂环内酯的不对称 [4+2] 环化反应，生成螺吲哚 δ-内酯

IF 5.5 1区化学

Chinese Journal of Chemistry Pub Date : 2024-09-10 DOI: 10.1002/cjoc.202400777

Xuerui Wang, Weiwu Ren

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