Chinese Journal of Chemistry最新文献_第5页

Photochemical Decarboxylative Radical Alkylation/Cyclization Reaction to Fused Nitrogen Heterocycles by LiI/PPh3 Catalysis 通过 LiI/PPh3 催化光化学脱羧自由基烷基化/环化反应生成融合氮杂环

IF 5.5 1区化学

Chinese Journal of Chemistry Pub Date : 2024-09-10 DOI: 10.1002/cjoc.202400628

Jia-Li Sui, Xin-Qian Liu, Shun-Dan Li, Peng-Fei Huang, Yu Liu, Jin-Heng Li

引用次数: 0

Enhanced Efficiency of Amide-Substituted Quinuclidine-Boranes as Hydridic Hydrogen Atom Transfer Catalysts for Photoinduced Hydroalkylation of Unactivated Olefins† 提高酰胺取代的喹啉-硼烷作为氢原子转移催化剂用于未活化烯烃光诱导加氢烷基化的效率† (英文)

IF 5.5 1区化学

Chinese Journal of Chemistry Pub Date : 2024-09-10 DOI: 10.1002/cjoc.202400725

Xiao Yang, Mengdi Ma, Meichen Xu, Yubing Pang, Haiying Zhao, Juntao Ye

引用次数: 0

Molecularly Imprinted Porous-Organic Framework with pH-Responsive Adsorption Sites for the Selective Adsorption of Iron 具有 pH 值响应吸附位点的分子印迹多孔有机框架用于铁的选择性吸附

IF 5.5 1区化学

Chinese Journal of Chemistry Pub Date : 2024-09-04 DOI: 10.1002/cjoc.202400663

Yajie Yang, Fuli Cai, Cheng Zhang, Nan Gao, Suming Zhang, Guangtong Wang, Ye Yuan

{"title":"Molecularly Imprinted Porous-Organic Framework with pH-Responsive Adsorption Sites for the Selective Adsorption of Iron","authors":"Yajie Yang, Fuli Cai, Cheng Zhang, Nan Gao, Suming Zhang, Guangtong Wang, Ye Yuan","doi":"10.1002/cjoc.202400663","DOIUrl":"10.1002/cjoc.202400663","url":null,"abstract":"<div>\u0000 \u0000 <p>Regulating brain iron metabolism and reducing neuronal ferroptosis is proven to be a potential method for treating Alzheimer's disease (AD). However, gastric juice has a pH of 1.1—2.2 where a large number of interfering ions are dissociated from the food, which in turn causes traditional oral iron chelators to be saturated and inactivated. Herein, poly(4-vinylbenzoic acid) polymer chains were introduced as guided by Fe<sup>3+</sup> ion template into the porous network (TpPa-1) via molecularly imprinted technology to obtain porous iron chelators, COOH@TpPa-1. The COOH@TpPa-1 maintains a multiple hydrogen bonding structure to block the channels in the stomach (pH ~1.1—2.2) with a strongly acidic environment, so just a small amount of active sites have been occupied. As COOH@TpPa-1 enters the colon, the alkaline environment disrupts the original hydrogen-bonded structure and forms anionic fragments, the bonding affinity for Fe<sup>3+</sup> ions was ~4.0 times that in the stomach, and also gave a high selective coefficient 4.2 times higher than that of conventional iron chelators. These designable \"on\" and \"off\" states promote the effective enrichment of iron ions within the colon by the porous chelator and produce a favorable therapeutic effect on Alzheimer's symptoms caused by ferroptosis in mice.</p>\u0000 <p>\u0000 </p>\u0000 </div>","PeriodicalId":151,"journal":{"name":"Chinese Journal of Chemistry","volume":"42 24","pages":"3324-3330"},"PeriodicalIF":5.5,"publicationDate":"2024-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142195663","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

Organic Polymer Framework Enhanced PEO-Based Electrolyte for Fast Li+ Migration in All-Solid-State Lithium-ion Batteries† 有机聚合物骨架增强型 PEO 电解质用于全固态锂离子电池中 Li+ 的快速迁移†。

IF 5.5 1区化学

Chinese Journal of Chemistry Pub Date : 2024-09-04 DOI: 10.1002/cjoc.202400647

Jun Chen, Quan Zhou, Xiaoyan Xu, Chuncai Zhou, Guorong Chen, Yan Li

{"title":"Organic Polymer Framework Enhanced PEO-Based Electrolyte for Fast Li+ Migration in All-Solid-State Lithium-ion Batteries†","authors":"Jun Chen, Quan Zhou, Xiaoyan Xu, Chuncai Zhou, Guorong Chen, Yan Li","doi":"10.1002/cjoc.202400647","DOIUrl":"10.1002/cjoc.202400647","url":null,"abstract":"<div>\u0000 \u0000 <p>With the rapid development of solid-state batteries, solid-state polymer electrolytes (SPEs) have attracted widespread attention due to their excellent environmental friendliness, designability, and forming film ability. However, due to the limited conductive path of polymers, lithium-ion diffusion kinetics are limited, and low ion conductivity is a huge challenge for SPEs in practical applications. This work provides a polyethylene oxide (PEO) based polymer electrolyte, which has multiple paths of ion diffusion caused by organic polymer framework of poly(hexaazatrinaphthalene) (PHATN). The unique porous channel, the specific surface characteristics, the coordination of -C=N- groups in PHATN with Li<sup>+</sup>, combined with the mobility of PEO segments, make the SPEs have a good ability to conduct Li<sup>+</sup>. Interestingly, the PHATN-PEO/lithium bis(trifluoromethanesulfonyl) imide (LiTFSI) composite electrolytes exhibit excellent electrochemical properties. At room temperature, the conductivity of PHATN-PEO electrolyte can reach 1.03 × 10<sup>–4</sup> S·cm<sup>–1</sup>, which is greatly improved compared with 3.9 × 10<sup>–6</sup> S·cm<sup>–1</sup> of PEO. Delightedly, the lithium-ion transference number of PHATN-PEO electrolyte achieves 0.61, and the electrochemical window increases to 4.82 V. The LFP/1%PH-PEO/Li solid-state batteries show good electrochemical cycles. This work reveals an efficient stratagem for the design of polymer solid-state electrolytes.</p>\u0000 <p>\u0000 </p>\u0000 </div>","PeriodicalId":151,"journal":{"name":"Chinese Journal of Chemistry","volume":"42 24","pages":"3308-3316"},"PeriodicalIF":5.5,"publicationDate":"2024-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142195666","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

Elevating Latent Fingerprint Visualization: Sebaceous Fingerprint Residues-Responsive Fluorescent Powders for Colour-Changing Visual Enhancement 提升潜伏指纹可视化：用于增强变色视觉效果的皮脂状指纹残留物--反应性荧光粉末

IF 5.5 1区化学

Chinese Journal of Chemistry Pub Date : 2024-09-04 DOI: 10.1002/cjoc.202400305

Ying Fang, Jun-Yu Luan, Jian-Shu Zhao, Xiu-Rong Kao, Hao-Rui Song, Yi-Ning Luo, Kun-Peng Wang, Shaojin Chen, Hai-Yu Hu, Zhi-Qiang Hu

{"title":"Elevating Latent Fingerprint Visualization: Sebaceous Fingerprint Residues-Responsive Fluorescent Powders for Colour-Changing Visual Enhancement","authors":"Ying Fang, Jun-Yu Luan, Jian-Shu Zhao, Xiu-Rong Kao, Hao-Rui Song, Yi-Ning Luo, Kun-Peng Wang, Shaojin Chen, Hai-Yu Hu, Zhi-Qiang Hu","doi":"10.1002/cjoc.202400305","DOIUrl":"10.1002/cjoc.202400305","url":null,"abstract":"<div>\u0000 \u0000 <p>A new fluorescent fingerprint powder (<b>DFF-MMT</b>) was formulated by blending cyclic chalcone dye DFF with montmorillonite (MMT), which can develop latent fingerprints (LFPs) with exceptional resolution and contrast on various surfaces, including ordinary glass, tin foil, marble, LED screens, and materials with distinct colors and fluorescent backgrounds. The fluorescence of <b>DFF-MMT</b> transforms from orange to bright yellow with LFPs, allowing for a flawless visualization of fingerprints on uneven surfaces or materials with static electricity. Impressively, fingerprints developed by <b>DFF-MMT</b> can be stored for over 21 months and conveniently duplicated. The developed LFPs by <b>DFF-MMT</b> still keep high quality under the influence of aquatic condition, illumination and thermal effects. <b>DFF-MMT</b> also exhibits benefits, such as affordability, real-time, high-resolution, high-contrast development and no damage to DNA, making it an ideal choice for sophisticated criminal investigations.</p>\u0000 <p>\u0000 </p>\u0000 </div>","PeriodicalId":151,"journal":{"name":"Chinese Journal of Chemistry","volume":"42 24","pages":"3337-3342"},"PeriodicalIF":5.5,"publicationDate":"2024-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142195665","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

Stereoselective Gridization of Ladder-Type Grids with Four Chiral Centers 具有四个手性中心的阶梯型网格的立体选择性网格化

IF 5.5 1区化学

Chinese Journal of Chemistry Pub Date : 2024-09-04 DOI: 10.1002/cjoc.202400502

Yang Li, Yueting Pu, Zheng Zhang, Fangju Tao, Xiaoyan Li, Jingrui Zhang, Xin Chen, Yuezheng Gao, Ying Wei, Linghai Xie

引用次数: 0

Redox-Neutral Nickel-Catalyzed Selective Hydroalkynylation of Internal Alkyne and Its Application in Anticancer Agent Discovery† 氧化还原中性镍催化的内炔烃选择性氢炔化反应及其在抗癌剂发现中的应用†。

IF 5.5 1区化学

Chinese Journal of Chemistry Pub Date : 2024-09-04 DOI: 10.1002/cjoc.202400655

Weiming Chen, Teng Liu, Shuqing Li, Guangyu Li, Gaorong Wu, Youjia Gao, Zhilin Xu, Yitao Wu, Xiaopeng Peng, Jiuzhong Huang

引用次数: 0

pH Independent and Efficient Photocatalytic Systems Enabled by Reaction Interface Microenvironment Regulation† 通过反应界面微环境调节实现独立于 pH 值的高效光催化系统†.

IF 5.5 1区化学

Chinese Journal of Chemistry Pub Date : 2024-09-04 DOI: 10.1002/cjoc.202400618

Hang Zhou, Xia Sheng, Xi Chen, Zhiping Liu, Xinjian Feng

{"title":"pH Independent and Efficient Photocatalytic Systems Enabled by Reaction Interface Microenvironment Regulation†","authors":"Hang Zhou, Xia Sheng, Xi Chen, Zhiping Liu, Xinjian Feng","doi":"10.1002/cjoc.202400618","DOIUrl":"10.1002/cjoc.202400618","url":null,"abstract":"<div>\u0000 \u0000 <p>Photocatalysis is a promising green approach for water purification. The diversity of water pH values is a key factor that restricts its practical application since pH affects the adsorption of organic molecules, the stability of catalysts and photocatalytic performance. Here, we report a pH–independent, efficient and stable photocatalytic system with a liquid (water)–liquid (oil)–solid (semiconductor) (L–L–S) triphase interface microenvironment. The system is fabricated by coating a thin layer of silicon oil on the surface of ZnO nanowire arrays, a model chemically unstable semiconductor in both acidic and alkaline solutions. We show that the unique interface makes the dye adsorption pH independent and prevents the semiconductor from being corroded by strong acidic/alkaline solutions, leading to a stable and efficient photocatalytic reaction over a wide pH range (1—14). These findings reveal a promising path for the development of high-performance catalysis systems applicable in complex water environments.</p>\u0000 <p>\u0000 </p>\u0000 </div>","PeriodicalId":151,"journal":{"name":"Chinese Journal of Chemistry","volume":"42 24","pages":"3349-3354"},"PeriodicalIF":5.5,"publicationDate":"2024-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142195668","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

Macrocyclic Calixpyridinium as a Photoacid for the Construction of Photoresponsive Supramolecular Materials 作为光酸构建光致伸缩性超分子材料的大环钙吡啶鎓

IF 5.5 1区化学

Chinese Journal of Chemistry Pub Date : 2024-09-04 DOI: 10.1002/cjoc.202400821

Kui Wang, Si-Chen Liu, Yu-Ting Wang, Xin Meng, Jian-Wen Wei, Xin Yan

{"title":"Macrocyclic Calixpyridinium as a Photoacid for the Construction of Photoresponsive Supramolecular Materials","authors":"Kui Wang, Si-Chen Liu, Yu-Ting Wang, Xin Meng, Jian-Wen Wei, Xin Yan","doi":"10.1002/cjoc.202400821","DOIUrl":"10.1002/cjoc.202400821","url":null,"abstract":"<div>\u0000 \u0000 <p>pH is an important stimuli-responsive signal because deprotonation-protonation process is crucial for many life functions. Photoacid is a kind of photoresponsive group that can release protons upon irradiation. This property makes invasive pH control can be replaced by noninvasive light control. However, photoacid is rare. In this work, macrocyclic calixpyridinium was found to be used as a photoacid to release protons from acidic methylene under the irradiation of a 254 nm UV lamp. When the solution of calixpyridinium−disulfonated xantphos aggregates were irradiated by a 254 nm portable UV lamp, disulfonated xantphos was able to receive the protons released from calixpyridinium. This noninvasive photocontrolled proton transfer not only replaces an invasive pH regulation but also achieves a synergistic function. The deprotonation of calixpyridinium and the protonation of disulfonated xantphos can occur simultaneously to disrupt the aggregates. Moreover, the photoresponsive disassembly is reversible by heating. This photoresponsive material was further applied as a photocontrolled release model. In addition, a dissipative assembly was successfully designed based on this photoresponsive disassembly. This study supplies a generalized strategy to construct pH-responsive biocompatible materials with light-control properties by using macrocyclic calixpyridinium and its matched various guests in water.</p>\u0000 <p>\u0000 </p>\u0000 </div>","PeriodicalId":151,"journal":{"name":"Chinese Journal of Chemistry","volume":"42 24","pages":"3331-3336"},"PeriodicalIF":5.5,"publicationDate":"2024-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142195664","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 : 2024-09-01 DOI: 10.1002/cjoc.202490192

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