Dalton Transactions最新文献_第9页

New mononuclear Dy(III) complex based on calix[4]arene ligand with two appended salicylideneamine groups decorated by azophenyl fragments: synthesis, crystalline assembly and slow magnetic relaxation behavior 基于杯状[4]芳烃配体的新型单核Dy（III）配合物的合成、结晶组装和慢磁弛豫行为

IF 4 3区化学

Dalton Transactions Pub Date : 2025-05-13 DOI: 10.1039/d5dt00936g

Iuliia V. Strelnikova, Angelina A. Iova, Alexander Ovsyannikov, Daut Islamov, Igor Litvinov, Vladimir Lazarenko, Elizaveta S. Kulikova, Artem Bogomyakov, Mei-Jin Lin, Airat Kiiamov, Svetlana Solovieva, Igor S. Antipin

{"title":"New mononuclear Dy(III) complex based on calix[4]arene ligand with two appended salicylideneamine groups decorated by azophenyl fragments: synthesis, crystalline assembly and slow magnetic relaxation behavior","authors":"Iuliia V. Strelnikova, Angelina A. Iova, Alexander Ovsyannikov, Daut Islamov, Igor Litvinov, Vladimir Lazarenko, Elizaveta S. Kulikova, Artem Bogomyakov, Mei-Jin Lin, Airat Kiiamov, Svetlana Solovieva, Igor S. Antipin","doi":"10.1039/d5dt00936g","DOIUrl":"https://doi.org/10.1039/d5dt00936g","url":null,"abstract":"Metal-organic Single-Molecule Magnets (SMMs) and especially Single-Ion Magnets (SIMs) still attract a growing attention due to their unique magnetic behavior which can be used in development of the computing technologies. Herein, we report on the synthesis of new mononuclear Dy(III) complex (2-Dy), using calix[4]arene ligand (2), decorated with two lower rim appended salicylideneamine groups, bearing azophenyl moieties. The structure of both the ligand and the Dy(III) complex are thoroughly characterized in the crystalline phase. The X-ray diffraction for ligand 2 revealed the formation of racemic mixture of left-handed and right-handed conformers. When binding with Dy(III) atom, the macrocycle 2 behaves as highly coordinating ligand by totally capping the metal coordination sphere, leading to distorted triangular dodecahedron coordination sphere (D2d symmetry). In the crystalline phase, for 2-Dy two complex enantiomer counterparts are stacked into the 1D homochiral chainsdue to weak CH/π-interactions. The magnetic properties measurements showed the obtained complex exhibiting slow magnetic relaxation behavior at temperature up to 10K in the absence of external dc field.","PeriodicalId":71,"journal":{"name":"Dalton Transactions","volume":"16 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143939960","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

Polynuclear Transition Metal Complexes: Emerging Agents for Bacterial Imaging and Antimicrobial Therapy 多核过渡金属配合物：用于细菌成像和抗菌治疗的新兴试剂

IF 4 3区化学

Dalton Transactions Pub Date : 2025-05-13 DOI: 10.1039/d5dt00678c

Bishnu Das, Sooraj Sathyanarayan, Parna Gupta

{"title":"Polynuclear Transition Metal Complexes: Emerging Agents for Bacterial Imaging and Antimicrobial Therapy","authors":"Bishnu Das, Sooraj Sathyanarayan, Parna Gupta","doi":"10.1039/d5dt00678c","DOIUrl":"https://doi.org/10.1039/d5dt00678c","url":null,"abstract":"Polynuclear transition metal complexes (PTMCs) represent a promising class of compounds with significant potential in advancing microbial diagnosis and combating infections due to their unique structural diversity and multifunctional properties. In this perspective, we aim to cover the recent progress in the design and synthetic strategies of PTMCs for microbial diagnosis and infection treatment. The complexes with multiple metal centres containing silver(I), rhenium(I), iron(II), cobalt(II), nickel(II), copper(II), zinc(II), cadmium(II), ruthenium(II), iridium(III), gold(I) and gold(III) generate a variety of structural diversity and have proven successful in treating a broad spectrum multidrug-resistant bacterial infection. PTMCs work in several dimensions, including generation of reactive oxygen species (ROS) and the effect, bacterial membrane disruption, and binding to bacteria-specific targets. The luminescent character of PTMC makes them ideal candidates for imaging purposes, targeting bacterial cells in real-time. In the context of the growing challenge in antibiotic resistance, we highlight that PTMCs afford state-of-the-art solutions by utilizing both bacterial imaging and antimicrobial therapy. In this perspective, we discuss their various applications, safety concerns, and emerging trends in the clinical use of PTMCs due to their enormous possibilities for future medical applications.","PeriodicalId":71,"journal":{"name":"Dalton Transactions","volume":"79 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143939963","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

Zeolitic imidazolate framework-67-derived chalcogenides as electrode materials for supercapacitors. 沸石咪唑酸框架-67衍生硫属化合物作为超级电容器电极材料。

IF 4 3区化学

Dalton Transactions Pub Date : 2025-05-12 DOI: 10.1039/d4dt02957g

Lidong Jiao,Mingshu Zhao,Qingyang Zheng,Qingyi Ren,Zhou Su,Min Li,Feng Li

{"title":"Zeolitic imidazolate framework-67-derived chalcogenides as electrode materials for supercapacitors.","authors":"Lidong Jiao,Mingshu Zhao,Qingyang Zheng,Qingyi Ren,Zhou Su,Min Li,Feng Li","doi":"10.1039/d4dt02957g","DOIUrl":"https://doi.org/10.1039/d4dt02957g","url":null,"abstract":"With the rapid development of new energy technologies, hybrid supercapacitors have received widespread attention owing to their advantages of high power density, fast charging/discharging rate and long cycle life. In this case, the selection and design of electrode materials are the key to improving the energy storage performance of supercapacitors. Herein, zeolitic imidazolate framework-67 (ZIF-67) is presented as a good candidate material for the fabrication of supercapacitor electrodes because of its controllable pore size, constant cavity size and large specific area. Moreover, pristine ZIF-67 and ZIF-67-derived porous carbon have shown exemplary performances in supercapacitors. However, they belong to the class of electric double layer capacitor materials and have a lower magnitude of energy storage compared with pseudocapacitor materials. Therefore, to improve the energy density of hybrid supercapacitors, other ZIF-67 derivatives need to be explored, especially chalcogenides. This review mainly reports the application of ZIF-67-derived transition metal chalcogenides (TMCs, C including Oxide, Sulfide, Selenide, Telluride) in supercapacitors. Moreover, the strategies for the preparation of ZIF-67-derived TMCs and their electrochemical performance in supercapacitors are further discussed. Finally, the remaining challenges and future perspectives are highlighted.","PeriodicalId":71,"journal":{"name":"Dalton Transactions","volume":"136 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143932891","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

Novel Curcumin@HKUST-1 composite with enhanced visible light harvesting capacities for photocatalytic applications 新型Curcumin@HKUST-1复合材料，增强可见光收集能力，用于光催化应用

IF 4 3区化学

Dalton Transactions Pub Date : 2025-05-12 DOI: 10.1039/d5dt00564g

Luis A. Alfonso-Herrera, Jesús Sebastián Rodríguez Girón, Juan Edgar Carrera Crespo, Francisco Tzompantzi, Daniel Sánchez-Martínez, Alejandra M. Montserrat Navarrete-López, Hiram Isaac Beltrán

{"title":"Novel Curcumin@HKUST-1 composite with enhanced visible light harvesting capacities for photocatalytic applications","authors":"Luis A. Alfonso-Herrera, Jesús Sebastián Rodríguez Girón, Juan Edgar Carrera Crespo, Francisco Tzompantzi, Daniel Sánchez-Martínez, Alejandra M. Montserrat Navarrete-López, Hiram Isaac Beltrán","doi":"10.1039/d5dt00564g","DOIUrl":"https://doi.org/10.1039/d5dt00564g","url":null,"abstract":"The HKUST-1 and related MOFs have been proposed as photocatalysts, nevertheless they presented certain limitations, e.g. poor visible light absorption. Thus, we propose the encapsulation of the photosensitizer curcumin (Cur) in HKUST-1 as a strategy to improve light absorption in the resultant Cur@HKUST-1 composite. The Cur@HKUST-1 was characterized by XRD, FTIR, TGA, UV-Vis, BET, SEM, and electrochemical experiments confirming the Cur infiltration in 2.5%, preserving crystalline structure of HKUST-1. DFT calculations for Cur@HKUST-1 in periodic boundary conditions were employed to elucidate the chemical structure, corroborating experimental evidence. Chronoamperometry experiments in dark and visible light irradiation showed 48 % current density enhancement for Cur@HKUST-1 vs. HKUST-1, corroborating the sensitization effect derived from Cur inclusion. As a result, Cur@HKUST-1, presented 1.2 times (20 % higher) photocatalytic hydrogen evolution than free HKUST-1 under visible light irradiation, just by 2.5% Cur loading into the HKUST-1, demonstrating infiltration as a suitable, nonlinear, strategy to produce active MOFs for photocatalytic purposes.","PeriodicalId":71,"journal":{"name":"Dalton Transactions","volume":"5 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143933101","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

Exploring the photoswitching pathways and efficiency of NO isomerization in ethylenediamine ruthenium nitrosyl complexes 探讨乙二胺钌亚硝基配合物中NO异构化的光开关途径及效率

IF 4 3区化学

Dalton Transactions Pub Date : 2025-05-09 DOI: 10.1039/d5dt00549c

Artem Mikhailov, Appolinaire Tchoutchoua Tiognou, Anastasiya O Brovko, Gennadiy Kostin, Dominik Schaniel

{"title":"Exploring the photoswitching pathways and efficiency of NO isomerization in ethylenediamine ruthenium nitrosyl complexes","authors":"Artem Mikhailov, Appolinaire Tchoutchoua Tiognou, Anastasiya O Brovko, Gennadiy Kostin, Dominik Schaniel","doi":"10.1039/d5dt00549c","DOIUrl":"https://doi.org/10.1039/d5dt00549c","url":null,"abstract":"Photo- and thermoswitchable molecular switches are attractive functional blocks, since structural modification induced by external stimuli can change the optical or ferroic properties of a material. In this work we report a series of photoswitchable ethylenediamine ruthenium nitrosyl complexes, in which the ligand environment significantly influences the thermal stability and photoconversion (population) of photoinduced linkage isomers (PLI) of the NO ligand. In the studied complexes, the energetically stable ground state (GS) nitrosyl linkage Ru-NO can be reversibly switched to the metastable isonitrosyl linkage Ru-ON (MS1) or the side-on nitrosyl linkage Ru-η2-(NO) (MS2) under blue (405-420 nm) or subsequent infrared (940-980 nm) irradiation, respectively. The reverse transformation back to GS can be induced by 500-700 nm irradiation or by temperature. It was found that the highest known decay temperature (Td = 215 K) of the side-on MS2 isomer can be achieved in [RuNO(en)2(H2O)](NO3)3 (2) having the H2O ligand as trans-to-NO ligand. Replacing H2O by OH-, [RuNO(en)2OH](NO3)2 (1), leads to a decrease of Td down to 207 K, but at the same time to an increase in the population of the linkage isomers Ru-ON (MS1, 47%) and Ru-η2-(NO) (MS2, 17%). Photocrystallographic analysis allowed us to unambiguously assign IR- and UV-vis spectroscopic signatures to the corresponding structural linkage isomer and study the mechanism of isomerization using ns pulsed excitation. As a result, we found that 410 nm pulsed excitation of the ground state isomer (Ru-NO, GS) first generates MS2 (GS→MS2) and only then produces isomer MS1 (MS2→MS1) reaching a photostationary equilibrium GS⇄MS2⇄MS1. According to modelled effective rate constants (k1-4) of all transformations under 410 nm irradiation, the population of MS2 stays very low (less than 1%) due to the high rate constants of the MS2→GS and MS2→MS1 processes.","PeriodicalId":71,"journal":{"name":"Dalton Transactions","volume":"26 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143927061","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

Molecular Ru(II) complexes with universal pH hydrogen evolution performance 具有普遍pH值析氢性能的Ru（II）配合物

IF 4 3区化学

Dalton Transactions Pub Date : 2025-05-09 DOI: 10.1039/d5dt00880h

Rakesh Kumar, Baghendra Singh, Apparao Draksharapu

引用次数: 0

The Interactions Between the Well-Isolated Dy3+ Ions Considerably Contribute to the Demagnetization of Mononuclear Acetylacetonate-Pyrazinate Complex 分离良好的Dy3+离子之间的相互作用在很大程度上促进了单核乙酰丙酮-吡嗪酸配合物的退磁

IF 4 3区化学

Dalton Transactions Pub Date : 2025-05-09 DOI: 10.1039/d5dt00749f

Andrey Vyacheslavovich Gavrikov, Andrey Ilyukhin, Mikhail E. Buzoverov, Konstantin Andreevich Babeshkin, Elena N. Timokhina, Natalia N. Breslavskaya, Pavel Nikolaevich Vasilyev, N. N. Efimov

{"title":"The Interactions Between the Well-Isolated Dy3+ Ions Considerably Contribute to the Demagnetization of Mononuclear Acetylacetonate-Pyrazinate Complex","authors":"Andrey Vyacheslavovich Gavrikov, Andrey Ilyukhin, Mikhail E. Buzoverov, Konstantin Andreevich Babeshkin, Elena N. Timokhina, Natalia N. Breslavskaya, Pavel Nikolaevich Vasilyev, N. N. Efimov","doi":"10.1039/d5dt00749f","DOIUrl":"https://doi.org/10.1039/d5dt00749f","url":null,"abstract":"A series of new mononuclear square antiprismatic complexes comprising acetylacetonate (acac-), pyrazine-2-carboxylate (PyrCOO-) and 1,10-phenanthroline (phen) ligands namely [Ln(acac)2(PyrCOO)(phen)] (Ln is Dy-Yb, Y; 1-5, 6) were prepared and studied. These complexes are new examples of extremely scarcely studied eight-coordinated tetra-chelate complexes comprising β-diketonate and carboxylate ligands. Complexes 1, 3 and 5 exhibit pronounced slowdown of the demagnetization with corresponding pathways additionally validated by the ab initio calculations. In particular, complex 1 exhibits zero-field relaxation with Δeff/kB of 149 K, while the application of the optimal DC field (1500 Oe) enhances Δeff/kB value to 265 K. Thus, although the quantum tunneling of magnetization (QTM) contributes to zero-field relaxation of complex 1, it is among the most efficient zero-field Dy-based SMMs formed by β-diketonate and/or carboxylate ligands. Moreover, Δeff/kB value under the optimal field is the highest one among the related complexes. Interestingly, the Dy-Dy magnetic interactions have considerable effect on the SMM performance of 1 even given the spatial (>8 Å) separation of Dy3+ ions isolated by coats of bulky diamagnetic ligands.","PeriodicalId":71,"journal":{"name":"Dalton Transactions","volume":"14 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143926996","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

Expression of concern: Simple NMR predictors of catalytic hydrogenation activity for [Rh(cod)Cl(NHC)] complexes featuring fluorinated NHC ligands 关注表达：以氟化NHC配体为特征的[Rh(cod)Cl(NHC)]配合物催化加氢活性的简单核磁共振预测因子

IF 3.5 3区化学

Dalton Transactions Pub Date : 2025-05-09 DOI: 10.1039/D5DT90091C

Mohamad Shazwan Shah Jamil, Sultan Alkaabi and Alan K. Brisdon

引用次数: 0

Low-temperature electrochemical production of thorium borides in NaCl-KCl molten salt systems† NaCl-KCl熔盐体系中低温电化学生产硼化钍的研究

IF 3.5 3区化学

Dalton Transactions Pub Date : 2025-05-09 DOI: 10.1039/D5DT00563A

Tiejian Zhu and Cheng Peng

引用次数: 0

Highly Tunable Rotationally Symmetric Multi-Band Terahertz Absorber with Enhanced Sensing Capabilities 具有增强传感能力的高可调谐旋转对称多波段太赫兹吸收体

IF 4 3区化学

Dalton Transactions Pub Date : 2025-05-09 DOI: 10.1039/d5dt00772k

Baowei Zhang, Mengsi Liu, Yifei Huang, Zao Yi, Yiping Xu

{"title":"Highly Tunable Rotationally Symmetric Multi-Band Terahertz Absorber with Enhanced Sensing Capabilities","authors":"Baowei Zhang, Mengsi Liu, Yifei Huang, Zao Yi, Yiping Xu","doi":"10.1039/d5dt00772k","DOIUrl":"https://doi.org/10.1039/d5dt00772k","url":null,"abstract":"In this study, we propose a novel multi-band absorber structure with exceptional tunability and high performance, aimed at applications in biosensing and medical diagnostics. The absorber consists of a three-layer design, including a gold bottom layer, a silicon dioxide middle layer, and a DSM top layer. The device achieves polarization insensitivity through a rotationally symmetric design, as verified by simulations under varying polarization angles. Six distinct absorption peaks (modes) were observed in the 4–10 THz range, with resonance frequencies and absorption rates demonstrating strong tunability through structural parameter adjustments and Fermi energy modulation. Specifically, by varying structural parameters, the absorption peaks can be fine-tuned, with mode-specific dependencies identified. Additionally, Fermi energy modulation provides an effective approach for shifting absorption peaks through changes in carrier concentration, demonstrating blueshifts across all modes. The absorber's sensing potential was evaluated in terms of its quality factor (Q) and refractive index sensitivity (S). The results reveal high performance, with a maximum refractive index sensitivity of 3752 GHz/RIU and a Q-factor of 132.76.","PeriodicalId":71,"journal":{"name":"Dalton Transactions","volume":"39 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143927003","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