Dalton Transactions最新文献_第2页

Visualizing supramolecular assembly behavior, stimulus response, and solid state emission of higher-order Pt2+ aggregates 可视化高阶 Pt2+ 聚集体的超分子组装行为、刺激响应和固态发射

IF 4 3区化学

Dalton Transactions Pub Date : 2024-11-15 DOI: 10.1039/d4dt02771j

Jing Li, Bao-Sen Xu, Shao-Zhe Yi, Xing-Long Zhang, Le-Le Zhao, Yu Meng, Wen-Jin Wang, Bao-Ning Li

{"title":"Visualizing supramolecular assembly behavior, stimulus response, and solid state emission of higher-order Pt2+ aggregates","authors":"Jing Li, Bao-Sen Xu, Shao-Zhe Yi, Xing-Long Zhang, Le-Le Zhao, Yu Meng, Wen-Jin Wang, Bao-Ning Li","doi":"10.1039/d4dt02771j","DOIUrl":"https://doi.org/10.1039/d4dt02771j","url":null,"abstract":"Here, we present the first instance of a highly efficient red tetramer aggregate with tunable emission based on a cationic platinum(II) complex in conjunction with a silver cluster anion counterpart. This system exhibits multicolor emission response behaviors, which can be conveniently and directly detected through spectroscopic analysis, showcasing intriguing luminescence changes. The self-assembly of Pt⋯, π–π, and hydrogen bonding interactions not only enables an intriguing color adjustment from green to yellow emission, and eventually to red emission, but also demonstrates the co-existence of the monomer, excimer, and aggregation. These phenomena are further accompanied by well-defined nanostructures. The self-assembly process of these structures exhibits an isodesmic growth mechanism, which is dependent on temperature. In this regard, it exhibits potential applicability in multi-mode logic gates that rely on external stimuli such as concentration, solvent, and temperature. The sensitivity of the aggregates towards chemical stimuli combined with their exceptionally bright emission characteristics renders them suitable for diverse applications including solid-state lighting sensing mechanisms and anticounterfeiting measures. The multi-stimuli responsive phosphorescence and self-assembly behaviors of the cationic platinum(II) complex were substantiated by X-ray crystal structure determination, 1H NMR analysis spectroscopic investigations, computational calculations and scanning electron microscopy (SEM) studies.","PeriodicalId":71,"journal":{"name":"Dalton Transactions","volume":"246 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2024-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142637844","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Contribution of Radiative Rate Constants to Crystallization-Induced Emission Enhancement in Boron-Fused Azobenzene Complexes 辐射速率常数对融硼偶氮苯配合物结晶诱导发射增强的贡献

IF 4 3区化学

Dalton Transactions Pub Date : 2024-11-15 DOI: 10.1039/d4dt02458c

Masashi Nakamura, Masayuki Gon, Kazuo Tanaka

引用次数: 0

Carrageenan-induced Highly Stable Zn Anode by Regulating Interface Chemistry 通过调节界面化学性质实现卡拉胶诱导的高稳定性锌阳极

IF 4 3区化学

Dalton Transactions Pub Date : 2024-11-15 DOI: 10.1039/d4dt02671c

Yan Xu, Zhaohe Guo, Xuena Xu, Liluo Shi, Xueyao Mo, Lu Li, LiMei Sun, Hongri Wan, Ming Song

{"title":"Carrageenan-induced Highly Stable Zn Anode by Regulating Interface Chemistry","authors":"Yan Xu, Zhaohe Guo, Xuena Xu, Liluo Shi, Xueyao Mo, Lu Li, LiMei Sun, Hongri Wan, Ming Song","doi":"10.1039/d4dt02671c","DOIUrl":"https://doi.org/10.1039/d4dt02671c","url":null,"abstract":"Zinc-ion batteries (ZIBs) are promising on account of the inherent safety, minimal toxicity, cost-effectiveness, and high theoretical capacity. However, the thorny issues including the Zn dendrites and side reactions impede their commercial application. Here, we propose a green, non-toxic and biological carrageenan (Carr) serving as an electrolyte additive to address the aforementioned issues. Owing to the multifunctional groups, Carr has the capacity to interact with Zn2+, thereby modulating the solvation configuration of Zn2+ and changing the ion distribution at electrode-electrolyte interface. Moreover, it can adsorb on the Zn electrode and induce the formation of the solid electrolyte interphase (SEI) consisting of ZnO, ZnS and R-SO2 species. It contributes to the uniform Zn2+ ions diffusion and even Zn deposition with preferable (002) plane. Consequently, the Zn||Zn cells exhibit a stable cycle performance for 800 h at 5 mA cm-2 and 5 mAh cm-2. An elevated coulombic efficiency of 99.2% over 1800 cycles is obtained in the Zn||Cu cells using the electrolyte with Carr. Benefitting from the highly stable and reversible Zn anode, the Zn||VO2 full cell also delivers a high performance in comparison with the bare ZnSO4 electrolyte, favoring the practical implementation of ZIBs.","PeriodicalId":71,"journal":{"name":"Dalton Transactions","volume":"38 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2024-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142637488","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Advancing Energetic Chemistry: First Synthesis of Sulfur-Based C-C Bonded Thiadiazole-Pyrazine Compounds with Nitrimino Moiety 推进能源化学：首次合成具有嘧啶分子的硫基 C-C 键噻二唑-吡嗪化合物

IF 4 3区化学

Dalton Transactions Pub Date : 2024-11-15 DOI: 10.1039/d4dt02919d

Parasar Kumar, Vikas Ghule, Srinivas Dharavath

引用次数: 0

Integration of Metal-Organic Framework and Clay Toward Functional Composite Materials 整合金属有机框架和粘土，开发功能性复合材料

IF 4 3区化学

Dalton Transactions Pub Date : 2024-11-15 DOI: 10.1039/d4dt02789b

Anindita Chakraborty, Jyoti Sharma, Tapas Kumar Maji

{"title":"Integration of Metal-Organic Framework and Clay Toward Functional Composite Materials","authors":"Anindita Chakraborty, Jyoti Sharma, Tapas Kumar Maji","doi":"10.1039/d4dt02789b","DOIUrl":"https://doi.org/10.1039/d4dt02789b","url":null,"abstract":"Metal-organic frameworks (MOFs) have become increasingly important as a class of porous crystalline materials because of their diverse applications. At the same time, significant progress has been achieved in the field of MOF-based composite materials toward novel applications based on the synergistic role of two or more different components. Clay materials have been explored recently in MOF chemistry for the synthesis of MOF-clay composites, which are a new class of functional materials synthesized by a cooperative combination of MOF with clay. Such composites have evolved only in the recent past, with important functions and applications, such as enhanced gas storage and separation, CO2 capture and conversion, catalysis, drug delivery, and water-harvesting. Notably, the typical shortcomings of MOFs, like moisture sensitivity, poor water dispersibility, poor thermal and chemical stability, and processability, could be overcome by developing novel MOF-clay composites. This article provides a concise overview of MOF-clay composites and their applications in various fields that would drive the interest of researchers to explore the emerging field of MOF-clay chemistry. In the initial sections, we classified the clays that have been used in MOF chemistry and briefly discussed their structures and chemistry. We also presented the advantages of MOF-clay composites and discussed their synthetic methodologies. In the later sections, we classified the different MOF-clay composites based on the clay and presented some representative examples of such composites showing unique properties and applications. Finally, the development in this field is summarized, and the future scope of such composites is discussed.","PeriodicalId":71,"journal":{"name":"Dalton Transactions","volume":"45 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2024-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142637485","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Electron Transfer Kinetics of a Series of Copper Complexes with Tripodal Tetradentate Guanidine Quinolinyl Ligands 具有三极四齿胍喹啉配体的一系列铜配合物的电子转移动力学

IF 4 3区化学

Dalton Transactions Pub Date : 2024-11-15 DOI: 10.1039/d4dt02917h

Tobias Seitz, Marcel Walbeck, Alexander Hoffmann, Sonja Herres-Pawlis

{"title":"Electron Transfer Kinetics of a Series of Copper Complexes with Tripodal Tetradentate Guanidine Quinolinyl Ligands","authors":"Tobias Seitz, Marcel Walbeck, Alexander Hoffmann, Sonja Herres-Pawlis","doi":"10.1039/d4dt02917h","DOIUrl":"https://doi.org/10.1039/d4dt02917h","url":null,"abstract":"Copper complexes of tripodal ligands have been used as model systems for electron transfer proteins for decades, displaying a broad range of electron self-exchage rates. We herein report a group of six tripodal tetradentate triarylamine ligands which display a varying number of guaninidine and 2-methylquinolinyl moierties. Their corresponding Cu(I) complexes have been (re)synthesized and studied with regard to their electron transfer properties. While their solid state structures are four-coordinate and display an uncommon umbrella distortion, DFT studies of the Cu(II) systems reveal that they gain an additional ligand in form of a solvent molecule and exhibit a range of possible conformers that likely co-exist in thermal equilibrium. The redox-couples’ electron self-exchange rates were analyzed using Marcus theory and vary over four orders of magnitdue which cyclic voltammetry studies suggest to be due to a gated addition-oxidation electron transfer mechanism. This mechanism deviates from previously studied systems, likely due to the structural anomalies of the Cu(I) systems. This demonstrates that the chosen path of tripodal model systems can be influenced by molecular design.","PeriodicalId":71,"journal":{"name":"Dalton Transactions","volume":"246 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2024-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142637481","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Structural Properties, Thermodynamic Stability and Reaction Pathways for Solid--State Synthesis of Bi2WO6 Polymorphs 固态合成 Bi2WO6 多晶体的结构特性、热力学稳定性和反应途径

IF 4 3区化学

Dalton Transactions Pub Date : 2024-11-15 DOI: 10.1039/d4dt02931c

Thi Hien Doan, Linh P.T. Tran, Van Hai Pham, Huy Hoang Luc

{"title":"Structural Properties, Thermodynamic Stability and Reaction Pathways for Solid--State Synthesis of Bi2WO6 Polymorphs","authors":"Thi Hien Doan, Linh P.T. Tran, Van Hai Pham, Huy Hoang Luc","doi":"10.1039/d4dt02931c","DOIUrl":"https://doi.org/10.1039/d4dt02931c","url":null,"abstract":"This study presents a density functional theory (DFT) investigation into the structural, electronic, and optical properties, thermodynamic stability, phase competition, and reaction pathways of Bi2WO6, a notable compound within the Aurivillius family of oxides. We examine three distinct polymorphs of Bi2WO6: the low-temperature orthorhombic phase (P1), the intermediate-temperature orthorhombic phase (P2), and the high-temperature monoclinic phase (P3).} Electronic structure analysis indicates band gaps of 2.339 eV (P1), 2.312 eV (P2), and 2.128 eV (P3), with the valence band primarily composed of O 2p states and the conduction band of Bi 6p and W 5d states. Optical properties, including the dielectric function and absorption spectra, show distinct behaviors for each phase, particularly P3. Elastic and phonon property analyses confirm the mechanical and dynamical stability of all three phases, with the P1 phase exhibiting the highest bulk modulus and stiffness among the polymorphs. Our effective mass calculations suggest that the P3 phase may have better charge carrier mobility compared to the P1 and P2 phases. Structural optimizations reveal marginal differences in total energy among these phases, suggesting their potential coexistence or easy phase transitions under varying conditions. Detailed Gibbs free energy calculations confirm that the P1 phase is the most stable at low temperatures, in agreement with experimental data in the literature. We also construct a chemical reaction network to explore feasible reaction pathways for the solid--state synthesis of Bi2WO6 from Bi2O3 and WO3 precursors, identifying several low--cost reaction pathways, including both direct and multi--step routes involving intermediates such as Bi14WO24 and Bi2W2O9.","PeriodicalId":71,"journal":{"name":"Dalton Transactions","volume":"25 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2024-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142637490","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

A comprehensive survey of Mn(I) carbonyls as CO-releasing molecules reported over the last two decades. 对过去二十年中报道的作为二氧化碳释放分子的锰(I)羰基进行全面调查。

IF 3.5 3区化学

Dalton Transactions Pub Date : 2024-11-15 DOI: 10.1039/d4dt02091j

Ahmed M Mansour, Rabaa M Khaled, Ola R Shehab

{"title":"A comprehensive survey of Mn(I) carbonyls as CO-releasing molecules reported over the last two decades.","authors":"Ahmed M Mansour, Rabaa M Khaled, Ola R Shehab","doi":"10.1039/d4dt02091j","DOIUrl":"10.1039/d4dt02091j","url":null,"abstract":"Over the last two decades, manganese(I) carbonyl complexes have been widely investigated as carbon monoxide releasing molecules (CORMs) to transfer small quantities of CO to biological targets to have beneficial impacts such as preventing ischemia reperfusion injury and reducing organ transplant rejection. Furthermore, these complexes exhibit beneficial anti-coagulative, anti-apoptotic, anti-inflammatory, and anti-proliferative properties. Owing to their highly controlled substitution chemistry and oxidative durability, Mn(I) carbonyl moieties were combined with a wide range of auxiliary ligands, including biomolecules. This review focused on tri- and tetracarbonyl Mn(I) complexes that were exposed to light, changed the redox status, or underwent thermal activation to release carbon monoxide. Kinetic parameters, stability in the dark, number of CO release equivalents, CO detection tools, and the nature of solvents used in the studies are reported and tabulated. An overview of all the previously published Mn(I) CORMs is specifically provided to define the method of action of these promising biologically active compounds and discuss their possible therapeutic applications in relation to their CO-releasing and biocompatibility characteristics.","PeriodicalId":71,"journal":{"name":"Dalton Transactions","volume":" ","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142612987","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Cracking Down on Vapochromic Salts: Unveiling Vapomechanical Stress in Gas-Sorbing Platinum Complexes 破解汽相盐：揭示吸气铂络合物中的蒸汽机械应力

IF 4 3区化学

Dalton Transactions Pub Date : 2024-11-15 DOI: 10.1039/d4dt02053g

Amie E. Norton, Stephen Taylor, Caroline Williams, Ann Zoller, Watts Dietrich, William Connick, Sayandev Chatterjee

引用次数: 0

Supramolecular bidentate rhodium(I) or iridium(I) phosphine and oxazoline amino acid bioconjugates as selective catalysts for enantioselective reactions 超分子双叉铑(I)或铱(I)膦和噁唑啉氨基酸生物共轭物作为对映体选择性反应的选择性催化剂

IF 4 3区化学

Dalton Transactions Pub Date : 2024-11-15 DOI: 10.1039/d4dt02519a

Marija Bakija, Saša Opačak, Berislav Peric, Soumyadeep Chakrabortty, Andrea Dell'Acqua, Eszter Barath, Johannes G. de Vries, Sergey Tin, Srećko I. Kirin

{"title":"Supramolecular bidentate rhodium(I) or iridium(I) phosphine and oxazoline amino acid bioconjugates as selective catalysts for enantioselective reactions","authors":"Marija Bakija, Saša Opačak, Berislav Peric, Soumyadeep Chakrabortty, Andrea Dell'Acqua, Eszter Barath, Johannes G. de Vries, Sergey Tin, Srećko I. Kirin","doi":"10.1039/d4dt02519a","DOIUrl":"https://doi.org/10.1039/d4dt02519a","url":null,"abstract":"This publication describes monodentate phosphine and oxazoline ligands attached to an amino acid ester and the application of their supramolecularly assembled rhodium(I) or iridium(I) complexes in asymmetric catalysis. The major feature of these complexes is the transmission of chirality from distant hydrogen bonded amino acids to the prochiral catalytic metal center (\"backdoor induction\"). The in situ generated homoleptic and heteroleptic rhodium(I) or iridium(I) precatalysts were studied by NMR, UV-VIS and CD spectroscopy as well as X-ray single crystal diffraction. In asymmetric hydrogenation of methyl α-acetamidocinnamate, rhodium(I) and iridium(I) complexes afforded complete conversions with enantioselectivities up to 85 %, while iridium complexes proved to be more sensitive to the variation of reaction conditions, including catalyst loading, metal to ligand ratio and temperature. The hydrogenation of four other dehydroamino acid substrates resulted in similar conversion and selectivity as obtained with methyl α-acetamidocinnamate. The influence of the phosphine/oxazoline heteroleptic mixtures in catalysis was studied using both rhodium(I) and iridium(I) complexes. Finally, a homoleptic phosphine rhodium(I) complex was successfully applied in asymmetric hydroformylation of styrene and 1-octene with complete conversions and selectivity up to 40% e.e. for the branched styrene product.","PeriodicalId":71,"journal":{"name":"Dalton Transactions","volume":"197 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2024-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142637483","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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