结构化学最新文献_第4页

Break the capacity limit of Li4Ti5O12 anodes through oxygen vacancy engineering

IF 5.9 4区化学

结构化学 Pub Date : 2025-02-01 DOI: 10.1016/j.cjsc.2024.100504

Jianjun Fang , Kunchen Xie , Yongli Song , Kangyi Zhang , Fei Xu , Xiaoze Shi , Ming Ren , Minzhi Zhan , Hai Lin , Luyi Yang , Shunning Li , Feng Pan

引用次数: 0

Molecular conformational effects on co-assembly systems of low-symmetric carboxylic acids investigated by scanning tunneling microscopy

IF 5.9 4区化学

结构化学 Pub Date : 2025-02-01 DOI: 10.1016/j.cjsc.2025.100511

Yutong Xiong , Ting Meng , Wendi Luo , Bin Tu , Shuai Wang , Qingdao Zeng

{"title":"Molecular conformational effects on co-assembly systems of low-symmetric carboxylic acids investigated by scanning tunneling microscopy","authors":"Yutong Xiong , Ting Meng , Wendi Luo , Bin Tu , Shuai Wang , Qingdao Zeng","doi":"10.1016/j.cjsc.2025.100511","DOIUrl":"10.1016/j.cjsc.2025.100511","url":null,"abstract":"<div><div>The assembly behaviors of two low-symmetric carboxylic acid molecules (5′-(6-carboxynaphthalen-2-yl)-[1,1′:3′,1′′-triphenyl]-3,4′′,5-tricarboxylic acid (CTTA) and 3′,5′-bis(6-carboxynaphthalen-2-yl)-[1,1′-biphenyl]-3,5-dicarboxylic acid (BCBDA)) containing naphthalene rings on graphite surfaces have been investigated using scanning tunneling microscopy (STM). The transformation of nanostructures induced by the second components (EDA and PEBP-C4) have been also examined. Both CTTA and BCBDA molecules self-assemble at the 1-heptanoic acid (HA)/HOPG interface, forming porous network structures. The dimer represents the most elementary building unit due to the formation of double hydrogen bonds. Moreover, the flipping of naphthalene ring results in the isomerization of BCBDA molecule. The introduction of carboxylic acid derivative EDA disrupts the dimer, which subsequently undergoes a structural conformation to form a novel porous structure. Furthermore, upon the addition of pyridine derivative PEBP-C4, N–H⋯O hydrogen bonds are the dominant forces driving the three co-assembled structures. We have also conducted density functional theory (DFT) calculations to determine the molecular conformation and analyze the mechanisms underlying the formation of nanostructures.</div></div>","PeriodicalId":10151,"journal":{"name":"结构化学","volume":"44 2","pages":"Article 100511"},"PeriodicalIF":5.9,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143395874","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Tailoring the configuration of polymer passivators in perovskite solar cells 调整过氧化物太阳能电池中聚合物钝化剂的配置

IF 5.9 4区化学

结构化学 Pub Date : 2025-02-01 DOI: 10.1016/j.cjsc.2024.100413

Yaohua Li , Qi Cao , Xuanhua Li

引用次数: 0

A new SIFSIX anion pillared cage MOF with crs topological structure for efficient C2H2/CO2 separation

IF 5.9 4区化学

结构化学 Pub Date : 2025-02-01 DOI: 10.1016/j.cjsc.2024.100508

Huirong Chen , Yingzhi He , Yan Han , Jianbo Hu , Jiantang Li , Yunjia Jiang , Basem Keshta , Lingyao Wang , Yuanbin Zhang

{"title":"A new SIFSIX anion pillared cage MOF with crs topological structure for efficient C2H2/CO2 separation","authors":"Huirong Chen , Yingzhi He , Yan Han , Jianbo Hu , Jiantang Li , Yunjia Jiang , Basem Keshta , Lingyao Wang , Yuanbin Zhang","doi":"10.1016/j.cjsc.2024.100508","DOIUrl":"10.1016/j.cjsc.2024.100508","url":null,"abstract":"<div><div>Due to the similar physicochemical properties of acetylene (C2H2) and carbon dioxide (CO2), separating C2H2 from a CO2/C2H2 mixture poses a significant challenge in the petrochemical industry. Herein, we successfully synthesized a novel SiF62− anion pillared cage metal-organic framework ZNU-15 possessing a new crs topological structure for the selective capture of C2H2. As a linear bidentate linker, the fluorinated SiF62− anion partitions the pores into various sized cages. ZNU-15 displays moderate adsorption for C2H2 with a capacity of 36.0 cm3 g−1 at 298 K and 1 bar, which is 2.7 times higher than the CO2 uptake. The IAST selectivity of C2H2/CO2 for ZNU-15 at 298 K and 100 kPa is 10.5, surpassing that of most reported materials. The Qst values for C2H2 and CO2 at zero coverage are 54.0 and 42.8 kJ mol−1, respectively. Moreover, breakthrough experimental tests show that ZNU-15 is capable of effectively separating C2H2 from a C2H2/CO2 mixture. Theoretical calculations further indicate that C2H2 is preferentially trapped by the small cage with four cooperative hydrogen bonds.</div></div>","PeriodicalId":10151,"journal":{"name":"结构化学","volume":"44 2","pages":"Article 100508"},"PeriodicalIF":5.9,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143395793","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Pyridinic nitrogen-substituted graphene membranes for exceptional CO2 capture

IF 5.9 4区化学

结构化学 Pub Date : 2025-02-01 DOI: 10.1016/j.cjsc.2024.100440

Sushu Zhang , Yang Yang , Jingyu Wang

引用次数: 0

Printable magnetoresistive sensors: A crucial step toward unconventional magnetoelectronics 可印刷磁阻传感器：迈向非常规磁电子学的关键一步

IF 5.9 4区化学

结构化学 Pub Date : 2025-02-01 DOI: 10.1016/j.cjsc.2024.100428

Lin Guo, Rui Xu, Denys Makarov

引用次数: 0

Photoelectric synergy induced synchronous functionalization of graphene and its applications in water splitting and desalination

IF 5.9 4区化学

结构化学 Pub Date : 2025-02-01 DOI: 10.1016/j.cjsc.2024.100501

Limin Wang , Feiyi Huang , Xinyi Liang , Rajkumar Devasenathipathy , Xiaotian Liu , Qiulan Huang , Zhongyun Yang , Dujuan Huang , Xinglan Peng , Du-Hong Chen , Youjun Fan , Wei Chen

{"title":"Photoelectric synergy induced synchronous functionalization of graphene and its applications in water splitting and desalination","authors":"Limin Wang , Feiyi Huang , Xinyi Liang , Rajkumar Devasenathipathy , Xiaotian Liu , Qiulan Huang , Zhongyun Yang , Dujuan Huang , Xinglan Peng , Du-Hong Chen , Youjun Fan , Wei Chen","doi":"10.1016/j.cjsc.2024.100501","DOIUrl":"10.1016/j.cjsc.2024.100501","url":null,"abstract":"<div><div>Chemical functionalization of graphene is a topic of paramount importance to broaden its applications in chemistry, physics, and biological science but remains a great challenge due to its low chemical activity and poor dispersion. Here, we report a strategy for the photosynergetic electrochemical functionalization of graphene (EFG). By using chloride ion (Cl−) as the intercalation anions and co-reactants, the electrogenerated radicals confined in the expanded graphite layers enable efficient radical addition reaction, thus grasping crystalline-perfect EFG. We found that the ultraviolet irradiation and applied voltage have increased the surface/interface concentration of Cl•, thus boosting the functionalization of graphene. Theoretical calculation and experimental results verified the oxygen evolution reaction (OER) on EFG has been improved by regulating the doping of chlorine atoms. In addition, the reduced interlayer distance and enhanced electrostatic repulsion near the basal plane endow the fabricated EFG-based membrane with high salt retention. This work highlights a method for the in situ functionalization of graphene and the subsequent applications in OER and water desalination.</div></div>","PeriodicalId":10151,"journal":{"name":"结构化学","volume":"44 2","pages":"Article 100501"},"PeriodicalIF":5.9,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143395876","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Engineering circularly polarized luminescence through symmetry manipulation in achiral tetraphenylpyrazine structures

IF 5.9 4区化学

结构化学 Pub Date : 2025-02-01 DOI: 10.1016/j.cjsc.2024.100460

Yuanpeng Ye , Longfei Yao , Guofeng Liu

{"title":"Engineering circularly polarized luminescence through symmetry manipulation in achiral tetraphenylpyrazine structures","authors":"Yuanpeng Ye , Longfei Yao , Guofeng Liu","doi":"10.1016/j.cjsc.2024.100460","DOIUrl":"10.1016/j.cjsc.2024.100460","url":null,"abstract":"<div><div>Symmetry breaking, a critical phenomenon in both natural and artificial systems, is pivotal in constructing chiral structures from achiral building units. This study focuses on the achiral molecule 8,8',8'',8'''-((pyrazine-2,3,5,6-tetrayltetrakis(benzene-4,1-iyl))tetrakis (oxy))tetrakis (octan-1-ol) (TPP-C8OH), an aggregation-induced emission (AIE) molecule, to explore its symmetry breaking behavior in supramolecular assembly. By analyzing TPP-C8OH in various solvents—both non-chiral and chiral—we find that chiral solvents significantly enhance the molecule's symmetry breaking and chiroptical properties. Specially, alcohol solvents, particularly dodecyl alcohol, facilitate the formation of helical structures with both left-handed (M) and right-handed (P) helices within single twisted nanoribbons. This observation contrasts with previously reported symmetry breaking phenomena in assembly systems. Chiral solvents induce assemblies with distinct helical orientations, resulting in notable circularly polarized luminescence (CPL) and circular dichroism (CD) signals. This study elucidates the impact of solvent choice on symmetry breaking and chiral assembly, offering insights into the design of advanced chiral materials with tailored self-assembly processes.</div></div>","PeriodicalId":10151,"journal":{"name":"结构化学","volume":"44 2","pages":"Article 100460"},"PeriodicalIF":5.9,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143395875","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Improved polymer electrolyte interfacial contact via constructing vertically aligned fillers 通过构建垂直排列的填料改善聚合物电解质界面接触

IF 5.9 4区化学

结构化学 Pub Date : 2025-02-01 DOI: 10.1016/j.cjsc.2024.100406

Xu Li , Yue Zhao , Tingli Ma

引用次数: 0

Facilitating ultra-fast lithium ion diffusion in face-centered cubic oxides via over-stoichiometric face-sharing configurations 通过超全度面共享配置促进面心立方氧化物中的超快锂离子扩散

IF 5.9 4区化学

结构化学 Pub Date : 2025-02-01 DOI: 10.1016/j.cjsc.2024.100419

Xiaohan Zhang, Bo Xiao

引用次数: 0