Chemistry - A European Journal最新文献_第7页

Chlorination-Supported Shrinkage of C60 Fullerene to Non-classical C58 Cages.

IF 3.9 2区化学

Chemistry - A European Journal Pub Date : 2025-01-19 DOI: 10.1002/chem.202404598

Victor A Brotsman, Nadezhda B Tamm, Maria P Kosaya, Vitaliy Yu Markov, Alexey A Goryunkov, Ilya N Ioffe, Sergey I Troyanov

引用次数: 0

Characterization of the Titanium(III) Tris(alkyl) Ti{CH(SiMe3)2}3 and its Conversion to a Dimeric Alkyl-bridged Titanium(IV) Species.

IF 3.9 2区化学

Chemistry - A European Journal Pub Date : 2025-01-19 DOI: 10.1002/chem.202404696

Philip P Power, Connor P McLoughlin, Anthony J Witt, Anni Maijala, Angela A Shiau, Guodong Rao, R David Britt, Heikki M Tuononen

引用次数: 0

Interpenetration Control in Metal-Organic Polyrotaxanes via Solvent Composition and Ligand Steric-Modulation: Supramolecular Isomerism and Luminescence Detection toward Fe3+ Ions.

IF 3.9 2区化学

Chemistry - A European Journal Pub Date : 2025-01-19 DOI: 10.1002/chem.202404336

Jing-Yun Wu, Wei-Ting Chen, Meng-Jung Tsai, Po-Min Chuang

{"title":"Interpenetration Control in Metal-Organic Polyrotaxanes via Solvent Composition and Ligand Steric-Modulation: Supramolecular Isomerism and Luminescence Detection toward Fe3+ Ions.","authors":"Jing-Yun Wu, Wei-Ting Chen, Meng-Jung Tsai, Po-Min Chuang","doi":"10.1002/chem.202404336","DOIUrl":"https://doi.org/10.1002/chem.202404336","url":null,"abstract":"Three fluorescent Zn coordaintion polymers (CPs) have been synthesized from the reactions of Zn(NO3)2∙6H2O, benzene-1,4-dicarboxylic acid (1,4-H2bdc), and angular carbazole-derived bispyridyl ligands (Cz-3,6-bpy or Cz-Pr-3,6-bpy). CPs 1-3 all adopt similar two-dimensional (2D) ring-and-rod layer structures, described as topologically 4-connected 2∙65 nets where the Zn(II) centers act as 4-connected nodes. CPs 1 and 2 are a pair of solvent-mediated supramolecular isomers where the former shows a two-fold interlocked 2D → 2D polyrotaxane-like entangled net and the latter reveals a four-fold interpenetrated 2D → 3D polyrotaxane entanglement. CP 3 is structure analgue of 1. The formation of 1-3 implies the realization of interpenetration control and supramolecular isomerism in polyrotaxanes by fine-tuning the solvent compositions and ligand steric-modulation. CPs 1-3 all show high thermal stability approaching 400 °C and good chemical stability in various solvents at room temperature for 24 h. Further, CPs 1-3 all are excellent turn-off sensors to recognize Fe3+ in water with high selectivity and sensitivity, great anti-inference ability, and low limit of detection (LOD). The sensing mechanisms are found to be competitive absorption of excitation wavelength energy and the occurrence of framework-Fe3+ interactions.","PeriodicalId":144,"journal":{"name":"Chemistry - A European Journal","volume":" ","pages":"e202404336"},"PeriodicalIF":3.9,"publicationDate":"2025-01-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142996876","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Redox-Active Bisphosphonate-Based Viologens as Negolytes for Aqueous Organic Flow Batteries.

IF 3.9 2区化学

Chemistry - A European Journal Pub Date : 2025-01-18 DOI: 10.1002/chem.202404122

Gabriel Gonzalez, Anton Nechaev, Vsevolod A Peshkov, Eduardo Martínez-González, Andrey Belyaev, Andrea Hamza, Mahsa Shahsavan, Petri M Pihko, Pekka Peljo

{"title":"Redox-Active Bisphosphonate-Based Viologens as Negolytes for Aqueous Organic Flow Batteries.","authors":"Gabriel Gonzalez, Anton Nechaev, Vsevolod A Peshkov, Eduardo Martínez-González, Andrey Belyaev, Andrea Hamza, Mahsa Shahsavan, Petri M Pihko, Pekka Peljo","doi":"10.1002/chem.202404122","DOIUrl":"https://doi.org/10.1002/chem.202404122","url":null,"abstract":"Viologen derivatives feature two reversible one-electron redox processes and have been extensively utilized in aqueous organic flow batteries (AOFBs). However, the early variant, methyl viologen (MVi), exhibits low stability in aqueous electrolytes, restricting its practical implementation in AOFB technology. In this context, leveraging the tunability of organic molecules, various substituents have been incorporated into the viologen core to achieve better stability, lower redox potential, and improved solubility. In this work, we introduce bisphosphonate-substituted viologens as candidates for AOFBs. The bulkiness and negative charges of the bisphosphonate groups enhance the solubility and the electrostatic repulsion among viologen molecules, minimizing the bimolecular side reactions that lead to degradation. Additionally, the electron-donating effect of this new substituent significantly lowers the redox potential. As a result, the proposed viologen derivatives exhibit high solubility (1.66 - 1.81 M in water) and stability (capacity decay of 0.009%/cycle or 0.229%/day when tested at 0.5 M). These parameters are coupled with the lowest redox potentials exceeding all previously reported viologens utilized in AOFBs (-0.503 V and -0.550 V against SHE for mono- and bis-phosphonate viologen, respectively).","PeriodicalId":144,"journal":{"name":"Chemistry - A European Journal","volume":" ","pages":"e202404122"},"PeriodicalIF":3.9,"publicationDate":"2025-01-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142996971","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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 Luminescent Cocrystals Based on Benzotriazole Derivatives: Synthesis, Characterization, Crystal Structure and Fluorescence Behavior.

IF 3.9 2区化学

Chemistry - A European Journal Pub Date : 2025-01-17 DOI: 10.1002/chem.202403889

Shengyu Fan, Xin Liu, Shuzhi Yao, Guangnan Xing, Xiaohui Xu, Guanyu Shi, Zhiguang Song, Guodong Feng

{"title":"Organic Luminescent Cocrystals Based on Benzotriazole Derivatives: Synthesis, Characterization, Crystal Structure and Fluorescence Behavior.","authors":"Shengyu Fan, Xin Liu, Shuzhi Yao, Guangnan Xing, Xiaohui Xu, Guanyu Shi, Zhiguang Song, Guodong Feng","doi":"10.1002/chem.202403889","DOIUrl":"https://doi.org/10.1002/chem.202403889","url":null,"abstract":"Organic cocrystals have garnered significant research attention owing to their distinctive properties and promising applications. However, challenges in molecular structure design and control of intermolecular interactions continue to impede further advancements. In this study, two novel cocrystals were successfully formed from a series of synthesized benzotriazole derivatives. The resulting cocrystals exhibit bright green and yellow fluorescence under 365 nm light. To elucidate the microstructure of the obtained cocrystals, systematic characterization techniques such as solid-state fluorescence emission spectroscopy, Single-crystal X-ray diffraction (SCXRD), Power X-ray diffraction (PXRD) and density functional theory (DFT) were performed. These benzotriazole-based cocrystals demonstrate distinct fluorescent responses to alkaline and acidic environments, respectively. Additionally, preliminary tests for fingerprint recognition yielded satisfactory results. These findings suggest that the two cocrystals hold potential applications in acid-alkali sensing, anti-counterfeiting labels, and smart material development, while also providing valuable insights for the design and optimization of solid-state luminescent materials.","PeriodicalId":144,"journal":{"name":"Chemistry - A European Journal","volume":" ","pages":"e202403889"},"PeriodicalIF":3.9,"publicationDate":"2025-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142996937","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Selective and Divergent Synthesis of Naphthalene- and Phenanthrene-Fused Azahelicenes by Turning Rearrangement On or Off.

IF 3.9 2区化学

Chemistry - A European Journal Pub Date : 2025-01-17 DOI: 10.1002/chem.202404325

Chihiro Maeda, Sayaka Michishita, Tadashi Ema

引用次数: 0

Transitioning to Green Discovery-Based Catalysis.

IF 3.9 2区化学

Chemistry - A European Journal Pub Date : 2025-01-17 DOI: 10.1002/chem.202404602

Rory Waterman

引用次数: 0

A Cascade Synthesis of Furo-Pyrrolo-Pyridines via Pd(II)-Catalyzed Dual N-H/C Annulative-Cyclization. 通过 Pd(II)-Catalyzed Dual N-H/C Annulative-Cyclization 级联合成呋喃并吡咯并吡啶。

IF 3.9 2区化学

Chemistry - A European Journal Pub Date : 2025-01-17 Epub Date: 2024-11-27 DOI: 10.1002/chem.202403470

Hirendra Nath Dhara, Supriya Manna, Bhisma K Patel

引用次数: 0

Exploring the Role of Titanate Perovskites in the Oxidation of Amines via Photocatalysis. 探索钛酸酯过氧化物在通过光催化将胺类氧化成亚胺过程中的作用。

IF 3.9 2区化学

Chemistry - A European Journal Pub Date : 2025-01-17 Epub Date: 2024-11-11 DOI: 10.1002/chem.202402422

Joana C Lopes, Maria J Sampaio, Cláudia G Silva, Joaquim L Faria

{"title":"Exploring the Role of Titanate Perovskites in the Oxidation of Amines via Photocatalysis.","authors":"Joana C Lopes, Maria J Sampaio, Cláudia G Silva, Joaquim L Faria","doi":"10.1002/chem.202402422","DOIUrl":"10.1002/chem.202402422","url":null,"abstract":"Considering that structural differences could affect the photocatalytic efficiency of titanate perovskites, cubic SrTiO3 (STO) and tetragonal CaTiO3 (CTO) were synthesised as models to elucidate the structure-activity relationship. STO and CTO materials were produced through hydrothermal approaches, adjusting parameters such as temperature and pressure to optimise material purity. Among the perovskite photocatalysts, two stand out for their exceptional photocatalytic capacity and crystalline purity: CaTiO3, prepared at 180 °C for 36 h, and SrTiO3, synthesised at 200 °C for 24 h. Notably, we explore the selective ability of these materials for the photocatalytic oxidative self-coupling of benzylamine (BZA) to produce N-benzylidenebenzylamine (BZI), with CaTiO3 emerging as the most efficient catalyst for this reaction. The CTO material prepared at 180 °C for 36 h (CTO180T-36) achieved a peak BZI production of 0.5 mM, with a total conversion of BZA after 7 h of irradiation. This study also emphasises the crucial role of reaction conditions and perovskite morphologies in fine-tuning photocatalytic performance. These findings highlight opportunities for developing efficient and selective photocatalytic processes, holding the compromise for applications in organic synthesis and sustainable green chemistry.","PeriodicalId":144,"journal":{"name":"Chemistry - A European Journal","volume":" ","pages":"e202402422"},"PeriodicalIF":3.9,"publicationDate":"2025-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142386649","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Synthesis, Structures and Air-stable N-type Organic Field-effect Transistor (OFET) Properties of Functionalized-phenanthrene Conjugated Asymmetric N-heteroacenes. 功能化菲共轭不对称 N-heteroacenes 的合成、结构和空气稳定 N 型有机场效应晶体管 (OFET) 性能。

IF 3.9 2区化学

Chemistry - A European Journal Pub Date : 2025-01-17 Epub Date: 2024-11-26 DOI: 10.1002/chem.202403373

Zepeng Liu, Yu Hua, Jiqiang Xu, Wenkai Zhao, Guankui Long, Jiaxiang Yang, Qichun Zhang, Guobing Zhang, Chengyuan Wang

{"title":"Synthesis, Structures and Air-stable N-type Organic Field-effect Transistor (OFET) Properties of Functionalized-phenanthrene Conjugated Asymmetric N-heteroacenes.","authors":"Zepeng Liu, Yu Hua, Jiqiang Xu, Wenkai Zhao, Guankui Long, Jiaxiang Yang, Qichun Zhang, Guobing Zhang, Chengyuan Wang","doi":"10.1002/chem.202403373","DOIUrl":"10.1002/chem.202403373","url":null,"abstract":"The development of stable high-performance n-type organic semiconductors for applications in organic field-effect transistors (OFETs) under ambient conditions is desirable but challenging. To address this issue, we here synthesized a series of functionalized-phenanthrene conjugated asymmetric N-heteroacenes, where the phenanthrene moiety was modified by N substitution or Br functionalization at different positions to induce various degrees of asymmetry in their structures. The photophysical and electrochemical properties of these molecules were studied, and their packing patterns were analysed. The OFETs based on these materials were fabricated through simple spin-coating method, and the as-resulted thin films were treated with different conditions. The devices exhibit typical n-type performances under ambient conditions with charge carrier mobilities up to 4.27×10-3 cm2 V-1 s-1. The crystallinities and morphologies of these thin films were studied to investigate the correlations between the device performances and thin-film characteristics. Our study suggests that phenanthrene conjugated N-heteroacenes can be developed as promising air-stable solution-processable n-type semiconducting materials, and Br modification at certain positions of phenanthrene is beneficial in adjusting the thin-film properties for the improvement of OFET performances.","PeriodicalId":144,"journal":{"name":"Chemistry - A European Journal","volume":" ","pages":"e202403373"},"PeriodicalIF":3.9,"publicationDate":"2025-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142613307","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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