Chem最新文献_第10页

Camphor the polymerization; stay for the depolymerization 樟树聚合；留下解聚

IF 19.1 1区化学

Chem Pub Date : 2024-10-10 DOI: 10.1016/j.chempr.2024.09.023

Inbar Zaltsman , Moshe Kol

引用次数: 0

Battery detectives: Uncovering cathode impact on anode-free Li cell performance by operando NMR 电池侦探：通过操作型核磁共振发现阴极对无阳极锂电池性能的影响

IF 19.1 1区化学

Chem Pub Date : 2024-10-10 DOI: 10.1016/j.chempr.2024.09.009

J. David Bazak , Karl T. Mueller , Vijayakumar Murugesan

引用次数: 0

Bridging gaps between lab- and fab-oriented anode design for proton exchange membrane water electrolyzers 弥合质子交换膜水电解槽实验室阳极设计与工厂阳极设计之间的差距

IF 23.5 1区化学

Chem Pub Date : 2024-10-10 DOI: 10.1016/j.chempr.2024.09.004

Jun Xu, Yuting Yang, Huanyu Jin, Yao Zheng, Shi-Zhang Qiao

引用次数: 0

Fine-tuning of proteasome inhibitors through rational pathway engineering 通过合理的途径工程微调蛋白酶体抑制剂

IF 19.1 1区化学

Chem Pub Date : 2024-10-10 DOI: 10.1016/j.chempr.2024.09.019

Martin Baunach

引用次数: 0

Simple physical organic model to predict mechanochemical bond-breaking 预测机械化学键断裂的简单物理有机模型

IF 19.1 1区化学

Chem Pub Date : 2024-10-10 DOI: 10.1016/j.chempr.2024.09.010

Manabu Abe

引用次数: 0

2D covalent organic framework via catenation 通过催化反应实现二维共价有机框架

IF 23.5 1区化学

Chem Pub Date : 2024-10-07 DOI: 10.1016/j.chempr.2024.09.006

Thirumurugan Prakasam, Sudhir Kumar Sharma, Florent Ravaux, Farah Benyettou, Matteo Lusi, Varghese Sabu, Philippe Bazin, Thomas Delclos, Ramesh Jagannathan, Jamie Whelan, Mohamad El-Roz, Mark A. Olson, Mahmoud Abdellatief, Obieda S. Mudraj, Felipe Gándara, Ali Trabolsi

{"title":"2D covalent organic framework via catenation","authors":"Thirumurugan Prakasam, Sudhir Kumar Sharma, Florent Ravaux, Farah Benyettou, Matteo Lusi, Varghese Sabu, Philippe Bazin, Thomas Delclos, Ramesh Jagannathan, Jamie Whelan, Mohamad El-Roz, Mark A. Olson, Mahmoud Abdellatief, Obieda S. Mudraj, Felipe Gándara, Ali Trabolsi","doi":"10.1016/j.chempr.2024.09.006","DOIUrl":"https://doi.org/10.1016/j.chempr.2024.09.006","url":null,"abstract":"Molecular-level structural modification is a well-established approach to impart advanced functionality to materials that continues to be the focus of research and development in both academic and industrial laboratories. Here, we report the synthesis of an ordered two-dimensional (2D) poly[2]catenate from the simultaneous self-assembly of two organic ligands and a metal salt by the formation of catenate links using metal coordination and imine condensation reactions. Subsequent chemical reduction of the imine bonds generated the corresponding demetallized poly[2]catenane, which was found to have greater non-rigid-body-like character than the poly[2]catenate as a result of the increased internal dynamics of the mechanical bonds and resulted in an 8-fold increase in elasticity. This synthetic approach allowed for the efficient incorporation of mechanically interlocked molecules (MIMs) within a 2D ordered structure and demonstrated their importance in improving the physical properties of materials by accessing molecular degrees of freedom that cannot be achieved by other means.","PeriodicalId":268,"journal":{"name":"Chem","volume":"54 1","pages":""},"PeriodicalIF":23.5,"publicationDate":"2024-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142384025","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

Non-fluorinated electrolytes with micelle-like solvation for ultra-high energy density lithium metal batteries 用于超高能量密度锂金属电池的胶束状溶解的无氟电解质

IF 23.5 1区化学

Chem Pub Date : 2024-10-03 DOI: 10.1016/j.chempr.2024.09.005

Rui Qiao, Yan Zhao, Shijie Zhou, Huijun Zhang, Fuzhu Liu, Tianhong Zhou, Baoyu Sun, Hao Fan, Chao Li, Yanhua Zhang, Feng Liu, Xiangdong Ding, Jang Wook Choi, Ali Coskun, Jiangxuan Song

{"title":"Non-fluorinated electrolytes with micelle-like solvation for ultra-high energy density lithium metal batteries","authors":"Rui Qiao, Yan Zhao, Shijie Zhou, Huijun Zhang, Fuzhu Liu, Tianhong Zhou, Baoyu Sun, Hao Fan, Chao Li, Yanhua Zhang, Feng Liu, Xiangdong Ding, Jang Wook Choi, Ali Coskun, Jiangxuan Song","doi":"10.1016/j.chempr.2024.09.005","DOIUrl":"https://doi.org/10.1016/j.chempr.2024.09.005","url":null,"abstract":"Electrolyte engineering plays a critical role in enabling lithium (Li) metal batteries. However, the simultaneous realization of anion-rich solvation structure and high ionic conductivity of electrolytes via solvation structure design remains challenging. Here, we report a low-cost, non-fluorinated electrolyte with a micelle-like solvation structure by introducing amphiphilic n-butyl methyl ether (MNBE) into Li bis(fluorosulfonyl)imide (LiFSI)/1,2-dimethoxyethane (DME) for stable Li metal batteries (LMBs). MNBE can effectively promote Li+-FSI− coordination through steric crowding. Meanwhile, the inert alkyl chains of MNBE can mitigate the reaction between electrolyte and Li metal due to their lithiophobicity. Specifically, the micelle-like, non-fluorinated electrolyte exhibits an ionic conductivity as high as 12.55 mS cm−1, and its anion-rich solvation structure promotes the formation of LiF-rich solid-electrolyte interphase. We constructed a 7.3 Ah Li||NMC811 pouch cell employing this electrolyte under harsh conditions, exhibiting ultra-high specific energy of 503.7 Wh kg−1 with impressive cycling stability of 84.1% capacity retention after 100 cycles.","PeriodicalId":268,"journal":{"name":"Chem","volume":"23 1","pages":""},"PeriodicalIF":23.5,"publicationDate":"2024-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142369578","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-solvent-free primary solvation shell for low-temperature aqueous zinc batteries 用于低温水溶锌电池的无有机溶剂一次溶壳

IF 23.5 1区化学

Chem Pub Date : 2024-10-02 DOI: 10.1016/j.chempr.2024.09.001

Lishan Geng, Jiashen Meng, Xuanpeng Wang, Weidong Wu, Kang Han, Meng Huang, Chunhua Han, Lu Wu, Jinghao Li, Liang Zhou, Liqiang Mai

{"title":"Organic-solvent-free primary solvation shell for low-temperature aqueous zinc batteries","authors":"Lishan Geng, Jiashen Meng, Xuanpeng Wang, Weidong Wu, Kang Han, Meng Huang, Chunhua Han, Lu Wu, Jinghao Li, Liang Zhou, Liqiang Mai","doi":"10.1016/j.chempr.2024.09.001","DOIUrl":"https://doi.org/10.1016/j.chempr.2024.09.001","url":null,"abstract":"Conventional hybrid aqueous electrolytes with solvated organic co-solvents encounter sluggish desolvation kinetics, especially under low-temperature conditions, due to the strong binding of organic solvents with Zn2+. Here, we develop a class of hybrid aqueous electrolytes with an organic-solvent-free primary solvation shell, favoring facile desolvation. As demonstrated by 1 M zinc acetate with dimethyl sulfoxide (DMSO) dipolar aprotic solvent, CH3COO− and H2O surround Zn2+, forming Zn2+(CH3COO−)2(H2O)4 clusters. The enhanced hydrogen bonds between solvated CH3COO− and H2O hinder DMSO from replacing solvated H2O. This weak solvation structure facilitates fast charge transfer kinetics and rapid Zn2+ flow through gradient solid electrolyte interphase. At −20°C, stable plating/stripping (5,600 h) and high Zn utilization (51%) are achieved. Furthermore, polyaniline||Zn batteries manifest low polarization (0.05 V), long cycling (8,800 cycles), and high rate. Importantly, this design strategy is generally extended to other hybrid electrolyte systems. This work represents advancements in electrolyte design for aqueous batteries.","PeriodicalId":268,"journal":{"name":"Chem","volume":"66 1","pages":""},"PeriodicalIF":23.5,"publicationDate":"2024-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142363118","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

Convergent synthesis and protein binding of vicinal difluorides by stereodivergent C–C bond formation 通过立体异构 C-C 键形成的邻位二氟化物的趋同合成和蛋白质结合

IF 23.5 1区化学

Chem Pub Date : 2024-09-30 DOI: 10.1016/j.chempr.2024.08.024

Yehao Qiu, Vienna C.J.X. Thomas, Tommaso Fantoni, Reichi Chen, Xingyu Jiang, Zhi-Tao He, Trevor W. Butcher, Daniel K. Nomura, John F. Hartwig

{"title":"Convergent synthesis and protein binding of vicinal difluorides by stereodivergent C–C bond formation","authors":"Yehao Qiu, Vienna C.J.X. Thomas, Tommaso Fantoni, Reichi Chen, Xingyu Jiang, Zhi-Tao He, Trevor W. Butcher, Daniel K. Nomura, John F. Hartwig","doi":"10.1016/j.chempr.2024.08.024","DOIUrl":"https://doi.org/10.1016/j.chempr.2024.08.024","url":null,"abstract":"Vicinal difluorides adopt defined conformations due to the electronic properties of fluorine. Therefore, they could be valuable for controlling the constellation of functional groups about acyclic C–C bonds in organic molecules if all stereoisomers of the difluorides could be synthesized. However, stereoselective synthesis of vicinal difluorides has been cumbersome. The location of functional groups within organic molecules is important because it influences function, particularly biological function. We report a catalytic synthesis of acyclic vicinal difluoride stereoisomers by C–C bond formation between two monofluoro units, along with crystallographic and computational data showing that the gauche relationship of two fluorides causes substituents to occupy defined positions about the C(sp3)–C(sp3) bond. Photoreactive chemical probes tethered to vicinal difluorides showed that difluorides bind more strongly than the analogous monofluorides, which possess less defined conformations, and that individual stereoisomers of the difluorides bind distinctly to the human proteome.","PeriodicalId":268,"journal":{"name":"Chem","volume":"26 1","pages":""},"PeriodicalIF":23.5,"publicationDate":"2024-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142360502","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

Guiding electron transfer for selective C2H6 photoproduction from CO2 引导电子转移，从二氧化碳中选择性光生化 C2H6

IF 23.5 1区化学

Chem Pub Date : 2024-09-19 DOI: 10.1016/j.chempr.2024.08.018

Jingyi Xu, Meichi Chong, Wenting Li, Enwei Zhu, Hongqiang Jin, Liping Liu, Yuehong Ren, Yongfa Zhu

{"title":"Guiding electron transfer for selective C2H6 photoproduction from CO2","authors":"Jingyi Xu, Meichi Chong, Wenting Li, Enwei Zhu, Hongqiang Jin, Liping Liu, Yuehong Ren, Yongfa Zhu","doi":"10.1016/j.chempr.2024.08.018","DOIUrl":"https://doi.org/10.1016/j.chempr.2024.08.018","url":null,"abstract":"Unguided electron transfer presents challenges for selectively photo-reducing carbon dioxide (CO2) into C2 products. We constructed continuous inter- and intra-component electric fields within photocatalysts by in situ chemical encapsulation. The dual-tandem electric fields facilitate charge separation and transfer photogenerated electrons accurately toward Cu2+-Cu+ sites for C–C coupling. We tracked the electron transport, observing directional electron migration between contacted heterostructure atoms, ligand carbon atoms, and Cu2+-Cu+ centers. The as-synthesized photocatalyst manifests a remarkable ethane (C2H6) production rate of 16.3 μmol g−1 h−1, a high electron selectivity of 64.4% for C2H6, and a stable electron consumption yield of 354.6 μmol g−1 h−1 in water vapor. These represent one of the best performances for CO2 photoreduction. This work promotes charge separation and manages precise control over electron migration via tandem built-in electric fields, opening a new prospect for selective CO2 photoreduction into high-value chemicals.","PeriodicalId":268,"journal":{"name":"Chem","volume":"64 1","pages":""},"PeriodicalIF":23.5,"publicationDate":"2024-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142246234","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