CCS Chemistry最新文献

Generation and Application of Silyl Acyl Radicals: Facile and Metal-Free Access to Acylsilanes 硅酰基自由基的生成与应用：轻松且无金属地获得酰基硅烷

IF 11.2 1区化学

CCS Chemistry Pub Date : 2024-09-16 DOI: 10.31635/ccschem.024.202404699

引用次数: 0

Scalable Amorphous NiFe(OH)x/Fe/Graphene Bifunctional Electrocatalyst via Solution-Corrosion for Water Splitting 通过溶液腐蚀实现水分离的可扩展非晶态 NiFe(OH)x/Fe/Graphene 双功能电催化剂

IF 11.2 1区化学

CCS Chemistry Pub Date : 2024-09-16 DOI: 10.31635/ccschem.024.202404423

引用次数: 0

Double-Helical Assembly of a Copper-Silver Hydride Cluster Exhibiting Thermally Activated Delayed Fluorescence 铜-银氢化物簇的双螺旋组装显示热激活延迟荧光

IF 11.2 1区化学

CCS Chemistry Pub Date : 2024-09-16 DOI: 10.31635/ccschem.024.202404213

Hu Yang, Su-Kao Peng, Wenbin Chen, Dong Luo, Shibo Xi, Shuai Lu, Yong-Liang Huang, De-Bo Hao, Bincheng Cai, Heng Wang, Mo Xie, Ming-De Li, Xiaopeng Li, Guo-Hong Ning, Dan Li

引用次数: 0

Heterogenization of a Dinuclear Cobalt Molecular Catalyst in Porous Polymers via Covalent Strategy for CO2 Photoreduction with Record CO Production Efficiency 通过共价策略在多孔聚合物中异质化双核钴分子催化剂，以创纪录的二氧化碳生产效率实现二氧化碳光还原

IF 11.2 1区化学

CCS Chemistry Pub Date : 2024-09-16 DOI: 10.31635/ccschem.024.202404675

引用次数: 0

Rhodium(I)-Catalyzed Asymmetric Alkyl Carbene B–H Bond Insertion: Enantioselective Synthesis of Versatile Chiral Alkylboranes 铑(I)催化的不对称烷基碳烯 B-H 键插入：多功能手性烷基硼烷的对映选择性合成

IF 11.2 1区化学

CCS Chemistry Pub Date : 2024-09-10 DOI: 10.31635/ccschem.024.202404591

Jian-Guo Liu, Bo Liu, Ziyan Li, Ming-Hua Xu

{"title":"Rhodium(I)-Catalyzed Asymmetric Alkyl Carbene B–H Bond Insertion: Enantioselective Synthesis of Versatile Chiral Alkylboranes","authors":"Jian-Guo Liu, Bo Liu, Ziyan Li, Ming-Hua Xu","doi":"10.31635/ccschem.024.202404591","DOIUrl":"https://doi.org/10.31635/ccschem.024.202404591","url":null,"abstract":"Recent advances in transition metal-asymmetric carbene B–H insertion reactions provide a straightforward and powerful protocol to access chiral organoboron compounds. However, the related reaction involving linear alkyl carbenes has not been successfully developed. Apart from the difficulty of controlling the enantioselectivity, another major challenge is the high propensity of the alkyl metal carbene to undergo a β-hydride migration to form undesired alkenes. Herein, we report our development of an efficient alkyl carbene B–H insertion reaction using rhodium(I)/diene complexes as the catalysts. This simple catalytic system not only reduces the formation of alkene byproduct but also achieves high enantioselectivity of the carbene B–H insertion. This method facilitates easy asymmetric access to a wide variety of structurally diverse alkylboranes in high yields, and their further synthetic application and transformation have also been described. Mechanistic studies show that the β-hydride migration is less favorable than the carbene insertion pathway under the rhodium(I)/diene catalytic system and that the B–H bond insertion is the rate-limiting step.","PeriodicalId":9810,"journal":{"name":"CCS Chemistry","volume":null,"pages":null},"PeriodicalIF":11.2,"publicationDate":"2024-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142166602","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 Self-Assembled Monolayer as Hole Transport Layer Enables Binary Organic Solar Cells Based on PM6: Y6 with Over 19% Efficiency 作为空穴传输层的不对称自组装单层使基于 PM6: Y6 的二元有机太阳能电池的效率超过 19

IF 11.2 1区化学

CCS Chemistry Pub Date : 2024-09-10 DOI: 10.31635/ccschem.024.202404707

引用次数: 0

A Smart MicroRNA-Programmable Metal Catalyst for the On-Site Amplified Imaging-Guided Phototherapy 用于现场放大成像引导光疗的智能微 RNA 可编程金属催化剂

IF 11.2 1区化学

CCS Chemistry Pub Date : 2024-09-10 DOI: 10.31635/ccschem.024.202404452

Kaiyue Tan, Qingqing Zhang, Jinhua Shang, Yuqiu He, Xiaoqing Liu, Fuan Wang

引用次数: 0

Growing a Lamination Structure of Graphdiyne/Nickel Sulfide for Oxygen Evolution Reaction 生长用于氧进化反应的石墨二炔/硫化镍层状结构

IF 11.2 1区化学

CCS Chemistry Pub Date : 2024-09-05 DOI: 10.31635/ccschem.024.202404426

引用次数: 0

Strain Engineering of Multimetallic Nanomaterials for Advanced Electrocatalysis 用于先进电催化的多金属纳米材料应变工程

IF 11.2 1区化学

CCS Chemistry Pub Date : 2024-09-03 DOI: 10.31635/ccschem.024.202404677

引用次数: 0

p-Type Organic Cathode Materials with Oxygen Atoms as Active Sites for High-Performance Organic Batteries 以氧原子为活性位点的 p 型有机阴极材料用于高性能有机电池

IF 11.2 1区化学

CCS Chemistry Pub Date : 2024-09-03 DOI: 10.31635/ccschem.024.202404506

Zixuan Chen, Tongyao Liang, Jixing Yang, Yunhua Xu, Yuesheng Li

{"title":"p-Type Organic Cathode Materials with Oxygen Atoms as Active Sites for High-Performance Organic Batteries","authors":"Zixuan Chen, Tongyao Liang, Jixing Yang, Yunhua Xu, Yuesheng Li","doi":"10.31635/ccschem.024.202404506","DOIUrl":"https://doi.org/10.31635/ccschem.024.202404506","url":null,"abstract":"Organic electrode materials for lithium-ion batteries (LIBs) have attracted increasing attention due to their potential low cost and renewability. Although oxygen atoms have been the most common redox-active sites of n-type organic electrode materials, it is a great challenge to develop high-performance oxygen-based p-type materials. In this study, we designed and synthesized two organic cathode materials with benzofuran (BF) as the active unit. Connecting two BF units onto para-positions of benzene or pyrazine increased the molecular size and maintained the planar structure, which facilitated enhanced intermolecular interaction, and thus, reduced solubility. Importantly, we found that the target molecules could undergo in situ electropolymerization during the charging process inside the batteries, which further reduced the solubility and stabilized the electrode structure. Electrochemical tests showed that the optimized cathode materials could reach 99.5% of theoretical capacity in LIBs, with a high capacity of up to 170.9 mAh g−1. In addition, they could be stably cycled 5,000 times with a high capacity retention of 75.1%, which corresponded to an average capacity loss of only 0.005% per cycle. These exciting results should arouse much interest in the study of p-type organic cathode materials with oxygen atoms as active sites.","PeriodicalId":9810,"journal":{"name":"CCS Chemistry","volume":null,"pages":null},"PeriodicalIF":11.2,"publicationDate":"2024-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142130849","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