Dalton Transactions最新文献

{"title":"Field-induced single-molecule magnetism in aminyl radical bridged trinuclear lanthanide clusters","authors":"Dan Liu,Changjiang Wu,Qiang Liu,Huayi Fang,Yin-Shan Meng","doi":"10.1039/d6dt01945e","DOIUrl":"https://doi.org/10.1039/d6dt01945e","url":null,"abstract":"Lanthanide single-molecule magnets (Ln-SMMs) are considered potential candidates for constructing nanoscale magnetic devices. Previous studies have demonstrated that the delocalized radical bridges can potentially induce strong magnetic exchange and suppress the QTM. In this work, we report a series of isostructural trinuclear lanthanide complexes 1-Ln bridged by aminyl radicals (-[NH]•-). Magnetic studies reveal that 1-Dy and 1-Er behave as field-induced SMMs, with their relaxation following the Orbach mechanism, while 1-Tb only exhibits field-induced magnetic relaxation. Ab initio calculations demonstrate that the three inequivalent DyIII sites possess different coordination distortion degrees, non-collinear easy axes and diverse spin state compositions. Their large ground-state transverse magnetic moments trigger intrinsic QTM and block relaxation via excited states. This work unveils the unique structure and the distinct magnetic coupling mode of the -[NH]•- radical bridge, providing insights for designing funtioncal magnetic materials by introducing new radical bridges.","PeriodicalId":71,"journal":{"name":"Dalton Transactions","volume":"4 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2026-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149218201","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}

{"title":"Highly Nitrogen-Doped Carbon Microtubes via Confined Carbonization of g-C3N4 for Enhanced Potassium-Storage Performance","authors":"Jiheng Wang,Ling Bai,Tao Hong,Xianming Liu,Guilong Liu,Shaozhou Li,Haijiao Zhang,Zhen-Dong Huang","doi":"10.1039/d6dt02337a","DOIUrl":"https://doi.org/10.1039/d6dt02337a","url":null,"abstract":"Defect-rich nanostructured anode materials such as g-C₃N₄-derived carbons offer high storage capacity and long cycling stability because of their abundant active K-ion storage sites, fast diffusion dynamics, and small volume changes during cycling. Herein, we report defect-rich, ultrahigh N-doped carbon microtubes (DN-CMTs), prepared by carbonizing the g-C₃N₄ hollow microtubes with a polydopamine (PDA) capsule. The optimized sample, carbonized at 700 °C with a g-C₃N₄/dopamine (DA) mass ratio of 2:1 (DN-CMT-2/1-700), presents a large BET surface area of 238.5 m² g⁻¹ and a high nitrogen doping of ~17.71 at.%. As a result, it delivers a stable reversible capacity of 618.9 mAh g⁻¹ at 0.05 A g⁻¹ and retains 313.9 mAh g⁻¹ after 1000 cycles at 1 A g⁻¹, as well as the highest first-cycle Coulombic efficiency in the series. More importantly, a series of CV, GITT, and ex-situ Raman measurements show pseudocapacitive-dominated K-ion storage with fast K-ion diffusion, as abundant defects and ultrahigh N-doping provide numerous active sites for potassium-ion storage. This study offers a novel perspective and methodology for developing nanostructured carbon anode materials with abundant defects for high-capacity and long-life potassium storage.","PeriodicalId":71,"journal":{"name":"Dalton Transactions","volume":"57 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2026-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149218204","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}

{"title":"The isomer space of face-capped coordination cages based on square planar metal complexes and low-symmetry ligands","authors":"Damien W. Chen,Jean de Montmollin,Kay Severin","doi":"10.1039/d6dt02276f","DOIUrl":"https://doi.org/10.1039/d6dt02276f","url":null,"abstract":"Face-capped coordination cages based on square planar metal complexes and low-symmetry ligands can form isomers, which differ in the relative orientation of the bridging ligands. We have used Burnside's lemma to enumerate the possible isomers for tri-, hexa-, and octanuclear cages and ligands of variable symmetry. The number of distinct isomers for these systems was found to range between 3 and 70 479, with chiral cages being generally more common than achiral ones. Strategies to achieve orientational self-sorting during the assembly of such cages are discussed.","PeriodicalId":71,"journal":{"name":"Dalton Transactions","volume":"25 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2026-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149218206","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}

{"title":"A Multi-Functional Copper Metallogel as a Heterogeneous Reusable Catalyst for Biginelli Condensation and Antimicrobial Activity","authors":"Anannya Sahaw,Aditya Prasad Panda,Koshis Pradhan,Anindya S. Ghosh,Manish Bhattacharjee","doi":"10.1039/d6dt01970f","DOIUrl":"https://doi.org/10.1039/d6dt01970f","url":null,"abstract":"A copper metallohydrogel has been synthesised using the gelator 2-(3-tert-butyl-2-hydroxy-5-methoxybenzylamino) acetic acid (H3L). The hydrogel was characterised using rheology, Matrix Assisted Laser Desorption Ionisation-Time of Flight (MALDI-TOF) mass spectrometry, FTIR, Field Emission Scanning Electron Microscopy (FESEM), High Resolution Transmission Electron Microscopy (HRTEM), Atomic Force Microscopy (AFM), X-ray Photoelectron Spectroscopy (XPS), Powder X-ray Diffraction (PXRD), and Thermo Gravimetric Analysis (TGA). The efficacy of the hydrogel as a heterogeneous, reusable catalyst for the Bignelli condensation has been investigated. We have also investigated the hydrogel's antimicrobial activity against both Gram-positive and Gram-negative bacteria.","PeriodicalId":71,"journal":{"name":"Dalton Transactions","volume":"11 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2026-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149218255","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}

{"title":"Highly Thermostable and Laser-Responsive Metal-Organic Framework Based on Energetic Fused-Ring Triazine-2-oxide Ligand","authors":"Zeyu Xu,Xiue Jiang,Mingren Fan,Ruihui Wang,Yi Wang,Qinghua Zhang","doi":"10.1039/d6dt01660j","DOIUrl":"https://doi.org/10.1039/d6dt01660j","url":null,"abstract":"Laser ignition technology offers a safer alternative to conventional methods, yet requires advanced energetic materials with superior laser responsiveness. In this study, a novel cobalt-based energetic MOF Co(PTO)2 was synthesized via a hydrothermal method using a fused-ring PTO ligand. The material demonstrates a high density (2.14 g cm-3), ultra-high thermal stability (Td=386.8 °C), excellent detonation performance (D=8502 m s-1, P=36.0 GPa), and low sensitivity (IS=50 J, FS >360 N). Moreover, it exhibits a low laser ignition threshold and rapid combustion response, showcasing the potential as a high-performance energetic material.","PeriodicalId":71,"journal":{"name":"Dalton Transactions","volume":"64 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2026-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149218202","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}

{"title":"Temperature-directed topology control in zirconium acetylenedicarboxylate MOFs through green aqueous synthesis.","authors":"Tobie J Matemb Ma Ntep, Nathalie S Jouwa Tameye, István Boldog, Imene Ziani-Cherif, Debanjan Chakraborty, Iurii Dovgaliuk, Hergen Breitzke, Robert Oestreich, Dennis Woschko, Patrice Kenfack Tsobnang, Gerd Buntkowsky, Christian Serre, Christoph Janiak","doi":"10.1039/d6dt01738j","DOIUrl":"https://doi.org/10.1039/d6dt01738j","url":null,"abstract":"<p><p>A green-chemical route using water/acetic acid as the solvent/modulator is proposed for obtaining the [Zr₆(µ₃-O)₄(µ₃-OH)₄(ADC)₆] MOF at 85 °C (Zr-HHUD-1; a UiO-66 analog with a face-centered cubic <b>fcu</b> topology, where ADC = acetylenedicarboxylate) and the alternative novel [Zr₆(µ₃-O)₄(µ₃-OH)₄(OH)₃(ADC)₄(H₃CCOO)(H₂O)₃] MOF at room temperature (Zr-HHUD-7; body-centered cubic <b>bcu</b> topology). Zr-HHUD-7 possesses two differently sized decorated pores, demonstrating higher IAST selectivity for CO₂ over CH₄ adsorption compared to Zr-HHUD-1. The temperature of synthesis is thus disclosed to control the degree of {Zr₆}-cluster connectivity, thereby enabling the tuning of the topology and sorption properties of zirconium-based metal-organic frameworks.</p>","PeriodicalId":71,"journal":{"name":"Dalton Transactions","volume":" ","pages":""},"PeriodicalIF":3.3,"publicationDate":"2026-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149190225","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}

{"title":"Sponge microspheres of wurtzite-ZnS with a defunctionalized surface of [(ENH)₂]²⁺ and CO₃^2- species for the enhanced hydrogen evolution rate.","authors":"Agileo Hernández-Gordillo, Octavio Aguilar-Martínez, Rafael A Salinas, Sandra Cipagauta-Díaz, Guillermo Santana, Sandra E Rodil","doi":"10.1039/d6dt01548d","DOIUrl":"https://doi.org/10.1039/d6dt01548d","url":null,"abstract":"<p><p>ZnS materials in two distinct phases, sphalerite and wurtzite, are typically tested for their H₂ evolution rates, but their photocatalytic efficiencies remain controversial because of differences in optoelectronic properties, morphology, and surface functionalization. These properties depend heavily on multiple synthesis parameters, and a defunctionalized surface should also be developed. This study presents the targeted synthesis of zinc sulfide (ZnS) in two distinct phases and morphologies-irregular sphalerite and sponge-like wurtzite microspheres-utilizing a synthetic and commercial hydrozincite ((Zn₅CO₃)₂(OH)₆) precursor. The functionalization with ENH⁺, OH^- and CO₃^2- species was controlled by tuning the ethylenediamine (ENH⁺) concentration in binary water-alcohol (butanol or ethanol) solvent mixtures. Comprehensive effects of the ENH⁺/Zn²⁺ and alcohol/water ratios on the physicochemical properties of ZnS materials, studied by X-ray diffraction (XRD), scanning electron microscopy (SEM), and FTIR analysis, revealed that the choice of both alcohol-solvent and hydrozincite precursor profoundly influences surface chemical composition, specifically, increasing the retention of ENH⁺, OH^- and CO₃^2- groups at high ENH⁺/Zn²⁺ ratios. High dispersibility of the functionalized ZnS powders, optimized in a water-ethanol mixture, was achieved with an ideal transport coefficient for the photocatalytic hydrogen evolution test. The sponge-like wurtzite microspheres achieved a high intrinsic H₂ evolution rate (HER) of 10 mmol h^-1 g^-1 under UV-C irradiation, outperforming a commercial hydrozincite-derived control. Crucially, high photoactivity was also achieved under simulated sunlight (visible light of 315-500 nm) with an HER value of 8.4 mmol h^-1 g^-1, being 1.8 times more active than irregular sphalerite-ZnS (4.7 mmol h^-1 g^-1). <i>Ex situ</i> defunctionalization of the best wurtzite-ZnS photocatalyst substantially changes the surface chemical composition by removing the ENH⁺ and CO₃^2- species, without affecting the active sites, and maintains the HER value with excellent stability over six cycles (36 h). The photoactivity is well correlated with the photocurrent density (9-19 μA cm^-2) and small charge transfer resistance. Ultimately, mechanistic models for both the <i>in situ</i> functionalization and <i>ex situ</i> defunctionalization on the surface of ZnS materials are proposed, establishing a robust framework for designing highly efficient, visible-light-responsive semiconductor photocatalysts.</p>","PeriodicalId":71,"journal":{"name":"Dalton Transactions","volume":" ","pages":""},"PeriodicalIF":3.3,"publicationDate":"2026-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149190193","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}

{"title":"Catalyst innovations for green hydrogen: recent advances, challenges, and future prospects","authors":"Temechew Dessie Agmas,Molla Asmare Alemu","doi":"10.1039/d6dt01533f","DOIUrl":"https://doi.org/10.1039/d6dt01533f","url":null,"abstract":"Hydrogen has emerged as a key energy carrier for achieving global decarbonization and enabling the transition to sustainable energy systems. Among the various production pathways, green hydrogen generated through water electrolysis using renewable electricity offers a carbon-free alternative to conventional fossil fuel-based hydrogen production. However, the efficiency, cost, and durability of water electrolysis technologies are strongly dependent on the development of advanced electrocatalysts. This study reviews the recent progress in catalyst materials and design strategies for water-splitting reactions, focusing on both hydrogen evolution and oxygen evolution reactions. This study examines the performance and limitations of conventional noble-metal catalysts alongside emerging Earth-abundant alternatives such as transition metal oxides, sulfides, phosphides, and alloyed or doped nanostructures. Key catalyst design strategies, including doping and alloying, single-atom and bifunctional catalysts, and catalyst support and layer engineering, are discussed in relation to their activity, stability, and scalability. This study also highlights the major technical challenges, including catalyst degradation, limited long-term stability, and high production costs. Furthermore, future research directions are explored, emphasizing the integration of machine learning and computational design for catalyst discovery, sustainable recycling and material utilization, and pathways toward large-scale commercialization of the developed catalysts. Overall, advancing efficient, durable, and low-cost electrocatalysts is essential for accelerating the deployment of green hydrogen technologies and supporting the global transition to a clean and sustainable energy economy.","PeriodicalId":71,"journal":{"name":"Dalton Transactions","volume":"10 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2026-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149173175","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}

{"title":"Na(CHSO)·B(OH): a borate–benzenesulfonate crystal with large birefringence","authors":"Lei Wu,Enshen Wang,Qun Jing,Xue Yu,Xiaoyu Dong,Zhaohui Chen","doi":"10.1039/d6dt02161a","DOIUrl":"https://doi.org/10.1039/d6dt02161a","url":null,"abstract":"Na(C6H5SO3)·B(OH)3, the first borate–benzenesulfonate compound, crystallizes in a monoclinic system featuring unique 2[Na(SO3)B(OH)3]∞ double layers. This ordered structure yields a significant birefringence of 0.150@546 nm. This work establishes a new mixed-anion system for the development of UV birefringent crystals.","PeriodicalId":71,"journal":{"name":"Dalton Transactions","volume":"27 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2026-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149173176","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}

{"title":"Magnetism of penta-coordinate Co(II) complexes with field-induced single-molecule magnet properties. Effects of distortion from <i>C</i>_2v symmetry.","authors":"Adam T Hand, Adiat A Fakolujo, Michael J Jenkins, Brandon D Watson-Sanders, Lei Chen, Zhenxing Wang, Yongqiang Cheng, Mykhaylo Ozerov, Luke L Daemen, Zheng Gai, Zi-Ling Xue","doi":"10.1039/d6dt02200f","DOIUrl":"https://doi.org/10.1039/d6dt02200f","url":null,"abstract":"<p><p>Molecular magnetic materials, especially those showing single-molecule magnet (SMM) behaviors, have potential applications in, <i>e.g.</i>, spintronics and high-density information storage. Penta-coordination in high-spin Co^II complexes leads to magnetic anisotropy and such complexes have been pursued in the search for SMMs. High-spin [Co(terpy)X₂] [X = Cl (Co-Cl), Br (Co-Br), I (Co-I); terpy = 2,2':6',2″-terpyridine] have been studied to determine their structural, magnetic, and spectroscopic properties. Advanced spectroscopic techniques [high-frequency and -field electron paramagnetic resonance (HFEPR), far-IR magneto-spectroscopy (FIRMS), and inelastic neutron scattering (INS)] and DC magnetic susceptibility measurements have been used to probe magnetic transitions in the three complexes. The structure of Co-Cl is significantly deviated from <i>C</i>_2v symmetry, leading to orbital contributions and the largest magnetic anisotropy in Co-X. The structures of Co-Br and Co-I are only slightly diverged from <i>C</i>_2v symmetry with quenched orbital contributions to their magnetic properties. <i>Ab initio</i> ligand field theory (AILFT) calculations help understand differences in magnetic properties between Co-Cl and Co-Br/Co-I. Data from alternating current (AC) susceptibility suggest that spin relaxation is primarily through the direct process at low temperatures. Spin-phonon couplings near magnetic transitions have been observed in FIRMS, contributing to spin relaxation. The current work provides a detailed study of the magnetic properties of the three five-coordinate Co^II complexes as field-induced SMMs.</p>","PeriodicalId":71,"journal":{"name":"Dalton Transactions","volume":" ","pages":""},"PeriodicalIF":3.3,"publicationDate":"2026-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149190213","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}