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Selective americium recovery from high level waste: demonstration of hydrophilic BTP enabled 1-cycle actinide partitioning 从高放射性废物中选择性回收镅:亲水性BTP实现1周期锕系元素分配的演示
IF 2.6 3区 化学 Q2 CHEMISTRY, INORGANIC & NUCLEAR Pub Date : 2026-04-01 Epub Date: 2026-02-01 DOI: 10.1016/j.poly.2026.118005
D.B. Sharma , S.A. Ansari , A. Bhattacharyya
This work presents a study on the separation of americium (Am) and europium (Eu) from simulated high-level waste (HLW) using a dual-solvent approach. TODGA (N,N,N′,N′-tetraoctyl diglycolamide) was employed as the extractant, while the sulphonated bis-triazinylpyridine derivative (SO3-Ph-BTP) served as a water-soluble selective stripping agent. The primary objective was to assess the practicality of a single-cycle actinide partitioning strategy which is increasingly recognized as a potential option for HLW management. Experiments were performed in an eight-stage mixer–settler system with 2 L of simulated HLW containing 241Am (t1/2 = 432 y) and 152,154Eu (t1/2 = 13 y). Eu was chosen as a representative of all lanthanides considering its radiochemical properties (gamma emitter) for easy quantification. More than 99.9% of both Am and Eu were transferred into the TODGA phase within four extraction stages. Subsequent stripping with SO3-Ph-BTP led to >99.9% recovery of Am over eight stages, while Eu remained quantitatively in the organic phase. The achieved decontamination factor of ∼103 for Am relative to Eu highlights the efficiency of this separation process. The findings demonstrate that a one-cycle Am recovery scheme is feasible, supporting the advancement of actinide–lanthanide partitioning concepts for future HLW management.
本文介绍了一种采用双溶剂方法从模拟高放废物(HLW)中分离镅(Am)和铕(Eu)的研究。以TODGA (N,N,N′,N′-四辛基二甘醇酰胺)为萃取剂,磺化双三嗪基吡啶衍生物(SO3-Ph-BTP)为水溶性选择性剥离剂。主要目的是评估单周期锕系元素分配策略的实用性,该策略越来越被认为是高放射性废物管理的潜在选择。实验在一个8级混合-沉淀系统中进行,该系统使用2l模拟高沸水,其中含有241Am (t1/2 = 432 y)和152154eu (t1/2 = 13 y)。考虑到铕的放射化学性质(γ发射器),为了便于量化,选择它作为所有镧系元素的代表。在4个萃取阶段中,Am和Eu均超过99.9%转移到TODGA阶段。随后用SO3-Ph-BTP进行溶出,在8个阶段中Am的回收率达到99.9%,而Eu仍在有机相中。Am相对于Eu获得的去污系数为~ 103,突出了该分离过程的效率。研究结果表明,单周期Am回收方案是可行的,支持了锕系元素-镧系元素分配概念在未来高浓缩铀管理中的发展。
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引用次数: 0
First-row transition metal complexes with pyridine-benzothiazole and hexafluoroacetylacetonate ligands: supramolecular insights and biological effects 与吡啶-苯并噻唑和六氟乙酰丙酮配体的第一排过渡金属配合物:超分子见解和生物效应
IF 2.6 3区 化学 Q2 CHEMISTRY, INORGANIC & NUCLEAR Pub Date : 2026-04-01 Epub Date: 2026-02-02 DOI: 10.1016/j.poly.2026.117980
Luciano Salas , Benjamín Villalobos , Plinio Cantero-López , Ariel Herrera-Vásquez , Verónica Paredes-García , Carlos Cruz
We report the synthesis, structural elucidation, and bioactivity assessment of a novel series of isostructural coordination complexes, M-PBT, with the general formula [M(PBT)₂(hfac)₂] (M = Mn, Fe, Co, Ni, Cu, Zn), incorporating 2-(pyridin-4-yl)-1,3-benzothiazole (PBT) and hexafluoroacetylacetonate (hfac) ligands. Single-crystal X-ray diffraction reveals that all complexes crystallize in the triclinic P-1 space group, featuring a trans-octahedral MN₂O₄ coordination geometry, where PBT ligands occupy axial positions and hfac ligands coordinate in the equatorial plane. Comparative structural analysis highlights systematic trends in bond lengths and octahedral distortion parameters across the 3d metal series. Hirshfeld surface analysis and 2D fingerprint plots underscore the key role of directional supramolecular interactions, namely C–H···F non-classical hydrogen bonds, F···F contacts, and π–π stacking, in stabilizing the three-dimensional crystal packing. Theoretical studies corroborate structural findings. Biological assays using Arabidopsis thaliana and Pseudomonas syringae reveal metal-dependent inhibitory effects on plant growth and bacterial proliferation. These results demonstrate that rational selection of metal centers and ligand frameworks can modulate the physicochemical and bioactive properties of coordination complexes, with broader implications for supramolecular design and bioinorganic chemistry.
我们报道了一种新型同结构配合物M-PBT的合成、结构解析和生物活性评价,其通式为[M(PBT) 2 (hfac) 2] (M = Mn, Fe, Co, Ni, Cu, Zn),含有2-(吡啶-4-基)-1,3-苯并噻唑(PBT)和六氟乙酰丙酮(hfac -)配体。x -射线单晶衍射表明,所有配合物均在三斜P-1空间群中结晶,具有反八面体MN₂O₄配位几何,其中PBT配体位于轴向位置,hfac -配体位于赤道平面。对比结构分析强调了键长和八面体畸变参数在三维金属系列中的系统趋势。Hirshfeld表面分析和二维指纹图谱强调了定向超分子相互作用(即C-H··F非经典氢键、F··F接触和π -π堆积)在稳定三维晶体堆积中的关键作用。理论研究证实了结构上的发现。利用拟南芥和丁香假单胞菌进行的生物学试验揭示了金属对植物生长和细菌增殖的依赖抑制作用。这些结果表明,金属中心和配体框架的合理选择可以调节配合物的物理化学和生物活性,对超分子设计和生物无机化学具有更广泛的意义。
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引用次数: 0
Water-stable cobalt(II) coordination polymer and its fluorescence turn-off sensing towards Cr₂O₇2− and 3-nitrotyrosine in aqueous solution 水稳定钴(II)配位聚合物及其对水溶液中Cr₂O₇2 -和3-硝基酪氨酸的荧光关闭感应
IF 2.6 3区 化学 Q2 CHEMISTRY, INORGANIC & NUCLEAR Pub Date : 2026-04-01 Epub Date: 2026-02-01 DOI: 10.1016/j.poly.2026.118008
Kun Zhang, Qing-Yun Yang, An-Ran Liu, Yi-Xuan Shi, Yang Shi, Jing Ru
In this paper, a two-dimensional Co(II) coordination polymer (CP), {[Co2(AAPA)2(Bix)2(H2O)]·2DMF}n (designated as AAPA-Co1), was constructed using anthracene-derived organic ligand 5-((anthracen-9-ylmethyl)amino)isophthalic acid (H2AAPA), and the auxiliary ligand 1,4-Bis(imidazole-l-ylmethyl)benzene (Bix). The synthesized AAPA-Co1 exhibited excellent thermal stability and chemical stability in aqueous solutions across varying conditions. As anticipated, fluorescence sensing studies revealed that AAPA-Co1 could function as a highly sensitive “turn-off” fluorescence sensor for Cr₂O₇2− and 3-nitrotyrosine (3-NT), achieving low detection limits of 0.78 μM and 1.17 μM, respectively. Furthermore, the potential quenching reasons were also systematically investigated.
本文以蒽衍生有机配体5-((蒽-9-甲基)氨基)间苯二甲酸(H2AAPA)和辅助配体1,4-双(咪唑-l-甲基)苯(Bix)为配体,构建了二维Co(II)配位聚合物(CP) {[Co2(AAPA)2(Bix)2(H2O)]·2DMF}n(命名为AAPA- co1)。合成的AAPA-Co1在不同条件下均表现出优异的热稳定性和化学稳定性。正如预期的那样,荧光传感研究表明,AAPA-Co1可以作为Cr₂O₇2 -和3-硝基酪氨酸(3-NT)的高灵敏度“关闭”荧光传感器,检测限分别为0.78 μM和1.17 μM。并对可能的淬火原因进行了系统的研究。
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引用次数: 0
Effect of alkyl chain architecture on diglycolamide complexation with uranyl ion: Insights from spectroscopy, calorimetry, and DFT 烷基链结构对二甘醇酰胺与铀酰离子络合的影响:来自光谱学、量热学和DFT的见解
IF 2.6 3区 化学 Q2 CHEMISTRY, INORGANIC & NUCLEAR Pub Date : 2026-04-01 Epub Date: 2026-02-01 DOI: 10.1016/j.poly.2026.118006
Dharmendra B. Sharma , Arunasis Bhattacharyya , Amey P. Wadawale , Prasanta K. Mohapatra , Richard J.M. Egberink , Willem Verboom , Seraj A. Ansari
Diglycolamides (DGAs) are recognized as versatile ligands for actinide ions and facilitate the separation processes relevant to nuclear waste management. While DGAs with linear alkyl chains have been extensively characterized, very little is known about how the alkyl chain branching influences their coordination properties. In this study, the complexation of uranyl ions (UO22+) with three tetraalkyl DGA derivatives, namely, tetra-n-butyl (TnBDGA), tetra-sec-butyl (TsBDGA), and tetra-isobutyl (TiBDGA), was examined using UV–vis spectrophotometry, isothermal titration calorimetry, and single-crystal X-ray diffraction. The thermodynamic and spectroscopic results demonstrate that complex formation is endothermic and mainly driven by favorable entropy changes, attributed to solvent reorganization and ligand conformational effects. The order of the complex stability (TnBDGA > TsBDGA) indicates that increasing alkyl branching introduces steric constraints that weaken the complexation reaction. Structural analysis of the UO22+/TiBDGA complex reveals a tridentate coordination through the three oxygen donor atoms. These findings highlight the significant role of ligand structural variations in determining both the energetics and geometry of the uranyl/DGA interactions, providing valuable guidance for designing more efficient extractants for nuclear fuel cycle applications.
二醇酰胺(DGAs)被认为是锕系离子的多用途配体,有助于与核废料管理相关的分离过程。虽然具有线性烷基链的DGAs已经被广泛表征,但对于烷基链分支如何影响其配位性质却知之甚少。本研究采用紫外-可见分光光度法、等温滴定量热法和单晶x射线衍射法研究了铀酰离子(UO22+)与三种四烷基DGA衍生物,即四正丁基(TnBDGA)、四正丁基(TsBDGA)和四异丁基(TiBDGA)的络合作用。热力学和光谱结果表明,配合物的形成是吸热的,主要由溶剂重组和配体构象效应引起的有利熵变驱动。配合物稳定性的顺序(TnBDGA > TsBDGA)表明,增加烷基支链会引入空间约束,从而减弱配合反应。对UO22+/TiBDGA配合物的结构分析表明,该配合物通过三个给氧原子形成三叉戟配位。这些发现强调了配体结构变化在决定铀酰/DGA相互作用的能量学和几何形状方面的重要作用,为设计更有效的核燃料循环应用萃取剂提供了有价值的指导。
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引用次数: 0
Structural diversity of cobalt(II) and copper(II) complexes with aminomethylpyridine/quinoline derivatives: application in rac-lactide polymerization 氨基甲基吡啶/喹啉衍生物钴(II)和铜(II)配合物的结构多样性:在racc -丙交酯聚合中的应用
IF 2.6 3区 化学 Q2 CHEMISTRY, INORGANIC & NUCLEAR Pub Date : 2026-03-15 Epub Date: 2026-01-19 DOI: 10.1016/j.poly.2026.117976
Fisayo Rachael Jegede , Saira Nayab , Minyoung Yoon , Gaeun Lee , Hyosun Lee , Sang-Ho Lee
A series of Co(II) and Cu(II) complexes supported by N,N′-bidentate ligands derived from aminomethylpyridine and aminomethylquinoline were synthesized and characterized. The ligands 2-(piperidin-1-ylmethyl)pyridine (LA), 4-(pyridin-2-yl)methyl)morpholine (LB), 2-(piperidin-1-ylmethyl)quinoline (LC), and 4-(quinolin-2-yl)methyl)morpholine (LD) reacted with [CoCl2·6H2O] or [CuCl2·2H2O] in a 1:1 M ratio to yield the corresponding dichloro complexes, formulated as [LnMX2] (where Ln = LA–LD; M = Co, Cu). X-ray diffraction analysis revealed that all [LnCoCl2] complexes (Ln = LA–LC) adopt distorted tetrahedral geometries. In contrast, the copper complexes displayed ligand-dependent geometries: [LCCuCl2] is distorted square-planar, while LB afforded dimeric [{CuCl(LB)}2(μ-Cl)2] species with distorted square-pyramidal copper centers. The ring-opening polymerization of rac-lactide was efficiently catalyzed by the in-situ-generated [LnM(OiPr)2] species (Ln = LA–LD; M = Co, Cu) upon treatment with LiOiPr. Catalytic activity was observed at both 0 °C and 25 °C, producing poly(lactide) (PLA) with pronounced heterotacticity. High monomer conversions were achieved; however, the resulting polymers exhibited moderately broad dispersities (PDIs = 1.22–1.38) and relatively low molecular weights, indicative of a moderate degree of polymerization control.
以氨基甲基吡啶和氨基甲基喹啉为原料合成了一系列以N,N '双齿配体负载的Co(II)和Cu(II)配合物,并对其进行了表征。配体2-(哌啶-1-基甲基)吡啶(LA)、4-(吡啶-2-基甲基)啉(LB)、2-(哌啶-1-基甲基)喹啉(LC)和4-(哌啶-1-基甲基)啉(LD)与[CoCl2·6H2O]或[CuCl2·2H2O]以1:1的M比反应生成相应的二氯配合物[LnMX2] (Ln = LA - LD; M = Co, Cu)。x射线衍射分析表明,所有[LnCoCl2]配合物(Ln = LA-LC)均为畸变四面体。相反,铜配合物表现出与配体相关的几何形状:[LCCuCl2]是扭曲的方形平面,而LB是具有扭曲的方形锥体铜中心的二聚体[{CuCl(LB)}2(μ-Cl)2]。在LiOiPr处理下,原位生成的[LnM(OiPr)2]物质(Ln = LA-LD; M = Co, Cu)有效地催化了racc -丙交酯的开环聚合。在0℃和25℃下均观察到催化活性,生成具有明显杂性的聚丙交酯(PLA)。单体转化率高;然而,所得到的聚合物具有中等宽的分散度(pdi = 1.22-1.38)和相对较低的分子量,表明聚合控制程度适中。
{"title":"Structural diversity of cobalt(II) and copper(II) complexes with aminomethylpyridine/quinoline derivatives: application in rac-lactide polymerization","authors":"Fisayo Rachael Jegede ,&nbsp;Saira Nayab ,&nbsp;Minyoung Yoon ,&nbsp;Gaeun Lee ,&nbsp;Hyosun Lee ,&nbsp;Sang-Ho Lee","doi":"10.1016/j.poly.2026.117976","DOIUrl":"10.1016/j.poly.2026.117976","url":null,"abstract":"<div><div>A series of Co(II) and Cu(II) complexes supported by <em>N</em>,<em>N</em>′-bidentate ligands derived from aminomethylpyridine and aminomethylquinoline were synthesized and characterized. The ligands 2-(piperidin-1-ylmethyl)pyridine (<strong>L</strong><sub><strong>A</strong></sub>), 4-(pyridin-2-yl)methyl)morpholine (<strong>L</strong><sub><strong>B</strong></sub>), 2-(piperidin-1-ylmethyl)quinoline (<strong>L</strong><sub><strong>C</strong></sub>), and 4-(quinolin-2-yl)methyl)morpholine (<strong>L</strong><sub><strong>D</strong></sub>) reacted with [CoCl<sub>2</sub>·6H<sub>2</sub>O] or [CuCl<sub>2</sub>·2H<sub>2</sub>O] in a 1:1 M ratio to yield the corresponding dichloro complexes, formulated as <strong>[L</strong><sub><strong>n</strong></sub><strong>MX</strong><sub><strong>2</strong></sub><strong>]</strong> (where L<sub>n</sub> = <strong>L</strong><sub><strong>A</strong></sub><strong>–L</strong><sub><strong>D</strong></sub>; M = Co, Cu). X-ray diffraction analysis revealed that all <strong>[L</strong><sub><strong>n</strong></sub><strong>CoCl</strong><sub><strong>2</strong></sub><strong>]</strong> complexes (L<sub>n</sub> = L<sub>A</sub>–L<sub>C</sub>) adopt distorted tetrahedral geometries. In contrast, the copper complexes displayed ligand-dependent geometries: <strong>[L</strong><sub><strong>C</strong></sub><strong>CuCl</strong><sub><strong>2</strong></sub><strong>]</strong> is distorted square-planar, while L<sub>B</sub> afforded dimeric <strong>[{CuCl(L</strong><sub><strong>B</strong></sub><strong>)}</strong><sub><strong>2</strong></sub><strong>(μ-Cl)</strong><sub><strong>2</strong></sub><strong>]</strong> species with distorted square-pyramidal copper centers. The ring-opening polymerization of <em>rac</em>-lactide was efficiently catalyzed by the <em>in-situ</em>-generated <strong>[L</strong><sub><strong>n</strong></sub><strong>M(O</strong><sup><strong><em>i</em></strong></sup><strong>Pr)</strong><sub><strong>2</strong></sub><strong>]</strong> species (L<sub>n</sub> = L<sub>A</sub>–L<sub>D</sub>; M = Co, Cu) upon treatment with LiO<sup><em>i</em></sup>Pr. Catalytic activity was observed at both 0 °C and 25 °C, producing poly(lactide) (PLA) with pronounced heterotacticity. High monomer conversions were achieved; however, the resulting polymers exhibited moderately broad dispersities (PDIs = 1.22–1.38) and relatively low molecular weights, indicative of a moderate degree of polymerization control.</div></div>","PeriodicalId":20278,"journal":{"name":"Polyhedron","volume":"288 ","pages":"Article 117976"},"PeriodicalIF":2.6,"publicationDate":"2026-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146081189","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 zero-dimensional zinc-based hybrid showing switchable dielectric constant, inverse symmetry breaking and fluorescence property 一种零维锌基杂化材料,具有可切换介电常数、逆对称破缺和荧光特性
IF 2.6 3区 化学 Q2 CHEMISTRY, INORGANIC & NUCLEAR Pub Date : 2026-03-15 Epub Date: 2026-01-19 DOI: 10.1016/j.poly.2026.117966
Jing Wei , Zi-Rui Liu , Jian Zhu , Xi-Xi Wang , Zhi-Ying Wang , Xiao-Wei Fan , Yu-Hui Tan , Chao Shi , Yun-Zhi Tang
In recent years, organic-inorganic hybrid lead-free materials have become a promising platform for preparing various stimuli-responsive materials with excellent optoelectronic properties. Here, we synthetise a zero-dimensional zinc-based hybrid, [3,3-difluorocyclobutylammonium]2ZnCl4 ([DFCBA]2ZnCl4, 1), and thoroughly discuss its various-temperature single-crystal structures, switchable dielectric constant behavior, and optical properties. 1 undergoes reversible structural phase transitions with dielectric switching property characteristics at around 354 K upon heating-cooling cycles. Interestingly, both the crystalline phases exhibit monoclinic structure. At room temperature, the organic cations display partial disordered configurations, while at high temperatures, they become highly ordered. This asymmetric symmetry breaking originates from the reverse temperature transition between disordered and ordered states of the [DFCBA]+ cation, which modulates the material's dielectric response. Optical characterization reveals that [DFCBA]2ZnCl4 possesses a direct band gap of 4.68 eV, with its photoluminescence (PL) spectrum showing a maximum emission peak at 481 nm and a fluorescence lifetime of 7.923 μs. Combining its outstanding dielectric switching properties with unique optical characteristics, this zero-dimensional zinc-based hybrid material demonstrates significant potential for applications in ultraviolet-responsive devices, high-insulation optical coatings, and novel optoelectronic devices.
近年来,有机-无机杂化无铅材料已成为制备各种具有优异光电性能的刺激响应材料的一个有前途的平台。本文合成了一种零维锌基杂化物[3,3-二氟环丁基铵]2ZnCl4 ([DFCBA] 2zncl4,1),并对其在不同温度下的单晶结构、介电常数的可切换行为和光学性质进行了深入的讨论。在加热-冷却循环中,1在大约354k时经历具有介电开关特性的可逆结构相变。有趣的是,这两种晶相都表现出单斜晶结构。在室温下,有机阳离子显示部分无序构型,而在高温下,它们变得高度有序。这种不对称对称性破缺源于[DFCBA]+阳离子的无序态和有序态之间的反向温度转变,这调节了材料的介电响应。光学表征表明[DFCBA]2ZnCl4具有4.68 eV的直接带隙,其光致发光(PL)光谱在481 nm处显示出最大发射峰,荧光寿命为7.923 μs。结合其出色的介电开关性能和独特的光学特性,这种零维锌基杂化材料在紫外响应器件、高绝缘光学涂层和新型光电器件中显示出巨大的应用潜力。
{"title":"A zero-dimensional zinc-based hybrid showing switchable dielectric constant, inverse symmetry breaking and fluorescence property","authors":"Jing Wei ,&nbsp;Zi-Rui Liu ,&nbsp;Jian Zhu ,&nbsp;Xi-Xi Wang ,&nbsp;Zhi-Ying Wang ,&nbsp;Xiao-Wei Fan ,&nbsp;Yu-Hui Tan ,&nbsp;Chao Shi ,&nbsp;Yun-Zhi Tang","doi":"10.1016/j.poly.2026.117966","DOIUrl":"10.1016/j.poly.2026.117966","url":null,"abstract":"<div><div>In recent years, organic-inorganic hybrid lead-free materials have become a promising platform for preparing various stimuli-responsive materials with excellent optoelectronic properties. Here, we synthetise a zero-dimensional zinc-based hybrid, [3,3-difluorocyclobutylammonium]<sub>2</sub>ZnCl<sub>4</sub> ([DFCBA]<sub>2</sub>ZnCl<sub>4</sub>, <strong>1</strong>), and thoroughly discuss its various-temperature single-crystal structures, switchable dielectric constant behavior, and optical properties. <strong>1</strong> undergoes reversible structural phase transitions with dielectric switching property characteristics at around 354 K upon heating-cooling cycles. Interestingly, both the crystalline phases exhibit monoclinic structure. At room temperature, the organic cations display partial disordered configurations, while at high temperatures, they become highly ordered. This asymmetric symmetry breaking originates from the reverse temperature transition between disordered and ordered states of the [DFCBA]<sup>+</sup> cation, which modulates the material's dielectric response. Optical characterization reveals that [DFCBA]<sub>2</sub>ZnCl<sub>4</sub> possesses a direct band gap of 4.68 eV, with its photoluminescence (PL) spectrum showing a maximum emission peak at 481 nm and a fluorescence lifetime of 7.923 μs. Combining its outstanding dielectric switching properties with unique optical characteristics, this zero-dimensional zinc-based hybrid material demonstrates significant potential for applications in ultraviolet-responsive devices, high-insulation optical coatings, and novel optoelectronic devices.</div></div>","PeriodicalId":20278,"journal":{"name":"Polyhedron","volume":"288 ","pages":"Article 117966"},"PeriodicalIF":2.6,"publicationDate":"2026-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146081192","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
Engineered 2-D mesoporous carbon/MXene heterostructures for enhanced photothermal crude oil remediation 设计二维介孔碳/MXene异质结构用于增强光热原油修复
IF 2.6 3区 化学 Q2 CHEMISTRY, INORGANIC & NUCLEAR Pub Date : 2026-03-15 Epub Date: 2026-01-16 DOI: 10.1016/j.poly.2026.117974
Yihan Gao, Chaochao Yang, Kerun Zhu, Yan Ai, Tong Wang, Wei Zhang, Wei Li, Dongyuan Zhao
The effective remediation of high-viscosity crude oil remains a pressing challenge due to the limited molecular mobility and inefficient diffusion under ambient conditions. Herein, we report a hierarchically engineered two-dimensional (2-D) heterostructure composed of vertically aligned mesoporous polydopamine-derived carbon (mPDA) layers integrated with Ti3C2Tx MXene nanosheets, constructed via a single-micelle-directed interfacial assembly strategy. This “sandwich-like” configuration not only suppresses MXene restacking and oxidation but also establishes continuous mesoporous nanochannels, enabling efficient light-to-heat conversion and accelerated oil diffusion. Embedded within a compressible cellulose aerogel scaffold, the resultant 2-D mPDA@MXene/COA composite achieves superior photothermal-assisted crude oil remediation, exhibiting an enhanced separation efficiency of 87.2% under sunlight-1.36 times higher than in the dark. The aerogel also delivers an exceptional organic solvent uptake capacity of up to 79.5 g/g (for carbon tetrachloride), strong chemical tolerance in acidic, basic, and saline media, and excellent reusability with >85% retention after 10 cycles. This work provides a scalable and generalizable platform for designing functional mesoporous carbon–MXene heterostructures, offering a promising route toward solar-driven environmental remediation under extreme operating conditions.
由于高粘度原油的分子迁移率有限,在环境条件下扩散效率低,如何有效地修复高粘度原油仍然是一个紧迫的挑战。在此,我们报告了一种分层工程的二维(2-D)异质结构,由垂直排列的介孔聚多巴胺衍生碳(mPDA)层与Ti3C2Tx MXene纳米片集成组成,通过单胶束定向界面组装策略构建。这种“三明治状”结构不仅抑制了MXene的再堆积和氧化,还建立了连续的介孔纳米通道,实现了高效的光热转换,加速了油的扩散。在可压缩的纤维素气凝胶支架中,得到的二维mPDA@MXene/COA复合材料实现了优越的光热辅助原油修复,在阳光下的分离效率提高了87.2%,比在黑暗中高出1.36倍。气凝胶还具有高达79.5 g/g的有机溶剂吸收能力(对于四氯化碳),在酸性、碱性和盐水介质中具有很强的化学耐受性,并且具有良好的可重复使用性,10次循环后保留率为85%。这项工作为设计功能介孔碳- mxene异质结构提供了一个可扩展和可推广的平台,为极端操作条件下太阳能驱动的环境修复提供了一条有希望的途径。
{"title":"Engineered 2-D mesoporous carbon/MXene heterostructures for enhanced photothermal crude oil remediation","authors":"Yihan Gao,&nbsp;Chaochao Yang,&nbsp;Kerun Zhu,&nbsp;Yan Ai,&nbsp;Tong Wang,&nbsp;Wei Zhang,&nbsp;Wei Li,&nbsp;Dongyuan Zhao","doi":"10.1016/j.poly.2026.117974","DOIUrl":"10.1016/j.poly.2026.117974","url":null,"abstract":"<div><div>The effective remediation of high-viscosity crude oil remains a pressing challenge due to the limited molecular mobility and inefficient diffusion under ambient conditions. Herein, we report a hierarchically engineered two-dimensional (2-D) heterostructure composed of vertically aligned mesoporous polydopamine-derived carbon (mPDA) layers integrated with Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub> MXene nanosheets, constructed <em>via</em> a single-micelle-directed interfacial assembly strategy. This “sandwich-like” configuration not only suppresses MXene restacking and oxidation but also establishes continuous mesoporous nanochannels, enabling efficient light-to-heat conversion and accelerated oil diffusion. Embedded within a compressible cellulose aerogel scaffold, the resultant 2-D mPDA@MXene/COA composite achieves superior photothermal-assisted crude oil remediation, exhibiting an enhanced separation efficiency of 87.2% under sunlight-1.36 times higher than in the dark. The aerogel also delivers an exceptional organic solvent uptake capacity of up to 79.5 g/g (for carbon tetrachloride), strong chemical tolerance in acidic, basic, and saline media, and excellent reusability with &gt;85% retention after 10 cycles. This work provides a scalable and generalizable platform for designing functional mesoporous carbon–MXene heterostructures, offering a promising route toward solar-driven environmental remediation under extreme operating conditions.</div></div>","PeriodicalId":20278,"journal":{"name":"Polyhedron","volume":"288 ","pages":"Article 117974"},"PeriodicalIF":2.6,"publicationDate":"2026-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146081185","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 new study of the chemical mixture and solvation properties of Polyoxometalate compounds by using water, acids and organic solvents 用水、酸和有机溶剂研究了多金属氧酸盐化合物的化学混合物和溶剂化性能
IF 2.6 3区 化学 Q2 CHEMISTRY, INORGANIC & NUCLEAR Pub Date : 2026-03-15 Epub Date: 2026-01-26 DOI: 10.1016/j.poly.2026.117988
Ali Harchani
A new study of the influence of water, acids, and organic solvents on polyoxometalate compounds, has been reported in this work. To study the evolution of the properties more deeply, the calculation was applied to two different compounds, (C6H8N)5[HAs2Mo6O26(H2O)].3H2O (1) and [(C7H7N2)3(NH4)]2[Mo8O26]2.4H2O (2), which were previously elaborated, and their structures were studied by the same author. The obtained results of mixture properties, sorption, adsorption, and solvation properties analysis prove that polyoxometalate compounds are affected differently by water, acids, and organic solvents. In addition, the results proved the high impact of solvents on these types of compounds.
本文报道了一项关于水、酸和有机溶剂对多金属氧酸盐化合物影响的新研究。为了更深入地研究性能的演变,将计算应用于两种不同的化合物(C6H8N)5[HAs2Mo6O26(H2O)]。前人对[(C7H7N2)3(NH4)]2[Mo8O26]2.4H2O(2)进行了阐述,并对其结构进行了研究。所得的混合物性质、吸附、吸附和溶剂化性质分析结果证明,水、酸和有机溶剂对多金属氧酸盐化合物的影响是不同的。此外,结果还证明了溶剂对这些类型化合物的高影响。
{"title":"A new study of the chemical mixture and solvation properties of Polyoxometalate compounds by using water, acids and organic solvents","authors":"Ali Harchani","doi":"10.1016/j.poly.2026.117988","DOIUrl":"10.1016/j.poly.2026.117988","url":null,"abstract":"<div><div>A new study of the influence of water, acids, and organic solvents on polyoxometalate compounds, has been reported in this work. To study the evolution of the properties more deeply, the calculation was applied to two different compounds, (C<sub>6</sub>H<sub>8</sub>N)<sub>5</sub>[HAs<sub>2</sub>Mo<sub>6</sub>O<sub>26</sub>(H<sub>2</sub>O)].3H<sub>2</sub>O (<strong>1</strong>) and [(C<sub>7</sub>H<sub>7</sub>N<sub>2</sub>)<sub>3</sub>(NH<sub>4</sub>)]<sub>2</sub>[Mo<sub>8</sub>O<sub>26</sub>]<sub>2</sub>.4H<sub>2</sub>O (<strong>2</strong>), which were previously elaborated, and their structures were studied by the same author. The obtained results of mixture properties, sorption, adsorption, and solvation properties analysis prove that polyoxometalate compounds are affected differently by water, acids, and organic solvents. In addition, the results proved the high impact of solvents on these types of compounds.</div></div>","PeriodicalId":20278,"journal":{"name":"Polyhedron","volume":"288 ","pages":"Article 117988"},"PeriodicalIF":2.6,"publicationDate":"2026-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146081181","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
The synthesis of a new 1,4-anthraquinone derivative molecule: its use as an ionophore in potentiometric sensor design, and its influence on pro-inflammatory cell death of granulosa cells 一种新型1,4-蒽醌衍生物分子的合成及其在电位传感器设计中的应用及其对颗粒细胞促炎细胞死亡的影响
IF 2.6 3区 化学 Q2 CHEMISTRY, INORGANIC & NUCLEAR Pub Date : 2026-03-15 Epub Date: 2026-01-26 DOI: 10.1016/j.poly.2026.117987
Kiymet Berkil Akar , Oguz Özbek , Caglar Berkel , Isa Mert Eski , Oguzhan Bebek , Onur Cem Altunoluk
In this study, a new 1,4-anthraquinone derivative molecule (3) was synthesized, and its potential as an ionophore in sensor design, and its influence on pro-inflammatory cell death were investigated. For this purpose, following the synthesis of the molecule, its characterization was carried out by 1H-, 13C-NMR, and FT-IR spectroscopic methods. Subsequently, different sensors were prepared using the synthesized 1,4-anthraquinone molecule as an ionophore. The prepared sensors exhibited selectivity towards Pb2+ ions among different cationic species. The developed Pb2+-selective sensor had a wide linear working range of 1.0 × 10−1–1.0 × 10−6 M, a low detection limit of 4.71 × 10−7 M, a Nernstian response of 26 ± 0.81 mV/decade and also a fast response time of 4 s. Besides, it was stable over a wide pH range (4.0–10.0) without being affected by pH changes. The surface morphologies of the prepared sensors were investigated by scanning electron microscopy (SEM). The sensors, which were produced quite economically, were then successfully applied in the analysis of real samples. Lastly, the novel molecule was found to slightly increase the release of pro-inflammatory proteins (IL-18 and LDH) from ovarian granulosa cells in vitro, indicating its potential as a pro-inflammatory cell death inducer.
本研究合成了一种新的1,4-蒽醌衍生物分子(3),并对其在传感器设计中作为离子载体的潜力及其对促炎细胞死亡的影响进行了研究。为此,在分子合成后,通过1H-, 13C-NMR和FT-IR光谱方法对其进行了表征。随后,利用合成的1,4-蒽醌分子作为离子载体制备了不同的传感器。所制备的传感器在不同阳离子中对Pb2+离子具有选择性。所研制的Pb2+选择性传感器线性工作范围为1.0 × 10−1 ~ 1.0 × 10−6 M,检测限为4.71 × 10−7 M, Nernstian响应为26±0.81 mV/ 10年,响应时间为4 s。在较宽的pH范围内(4.0-10.0)均保持稳定,不受pH变化的影响。利用扫描电子显微镜(SEM)研究了所制备传感器的表面形貌。该传感器生产相当经济,然后成功地应用于实际样品的分析。最后,在体外实验中发现,这种新分子可以略微增加卵巢颗粒细胞中促炎蛋白(IL-18和LDH)的释放,这表明它可能是一种促炎细胞死亡诱导剂。
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引用次数: 0
Photoluminescent rhenium tricarbonyl diimine complexes bearing a saccharinate ligand 含糖化配体的光致发光铼三羰基二亚胺配合物
IF 2.6 3区 化学 Q2 CHEMISTRY, INORGANIC & NUCLEAR Pub Date : 2026-03-15 Epub Date: 2026-01-24 DOI: 10.1016/j.poly.2026.117983
Robinur Rahman , Subas Rajbangshi , Hikari Kawashima , Masashi Hasegawa , Reo Ohno , Daisuke Hayauchi , Miki Hasegawa , Vladimir N. Nesterov , German E. Pieslinger , Shishir Ghosh
Two rhenium tricarbonyl diimine complexes namely fac-[Re(CO)32-phen){κ1-(N)-sac}] (1) (phen = 1,10-phenanthroline) and fac-[Re(CO)32-bpy){κ1-(N)-sac}] (2) (bpy = 2,2′-bipyridine) have been prepared from the reactions of [Re(CO)4(NCMe){κ1-(N)-sac}] (sacH = saccharin) with corresponding diimine. Both complexes are photoluminescent upon UV irradiation, and display phosphorescence (ΦPL = 0.5–2.7%, τ = 0.14–0.05 μs) in solution at room temperature as expected. DFT/TD-DFT calculations, carried out to interrogate their exited-state character, reveal that both absorption and emission are MLCT in nature for both complexes in accordant with the experimental observations. Both complexes have also been found to dissolve in all common organic solvents.
由[Re(CO)4(NCMe){κ1-(N)-囊}](sacH =糖精)与相应的二亚胺反应制备了两种铼三羰基二亚胺配合物fac-[Re(CO)3(κ2-phen){κ1-(N)-囊}](1)(phen = 1,10-菲罗啉)和fac-[Re(CO)3(κ2-bpy){κ1-(N)-囊}](2)(bpy = 2,2 ' -联吡啶)。两种配合物在紫外光照射下均呈光致发光,在室温下均显示磷光(ΦPL = 0.5 ~ 2.7%, τ = 0.14 ~ 0.05 μs)。DFT/TD-DFT计算表明,这两种配合物的吸收和发射本质上都是MLCT,与实验观察结果一致。这两种配合物也被发现在所有常见的有机溶剂中溶解。
{"title":"Photoluminescent rhenium tricarbonyl diimine complexes bearing a saccharinate ligand","authors":"Robinur Rahman ,&nbsp;Subas Rajbangshi ,&nbsp;Hikari Kawashima ,&nbsp;Masashi Hasegawa ,&nbsp;Reo Ohno ,&nbsp;Daisuke Hayauchi ,&nbsp;Miki Hasegawa ,&nbsp;Vladimir N. Nesterov ,&nbsp;German E. Pieslinger ,&nbsp;Shishir Ghosh","doi":"10.1016/j.poly.2026.117983","DOIUrl":"10.1016/j.poly.2026.117983","url":null,"abstract":"<div><div>Two rhenium tricarbonyl diimine complexes namely <em>fac</em>-[Re(CO)<sub>3</sub>(κ<sup>2</sup>-phen){κ<sup>1</sup>-(N)-sac}] (<strong>1</strong>) (phen = 1,10-phenanthroline) and <em>fac</em>-[Re(CO)<sub>3</sub>(κ<sup>2</sup>-bpy){κ<sup>1</sup>-(<em>N</em>)-sac}] (<strong>2</strong>) (bpy = 2,2′-bipyridine) have been prepared from the reactions of [Re(CO)<sub>4</sub>(NCMe){κ<sup>1</sup>-(<em>N</em>)-sac}] (sacH = saccharin) with corresponding diimine. Both complexes are photoluminescent upon UV irradiation, and display phosphorescence (<em>Φ</em><sub>PL</sub> = 0.5–2.7%, <em>τ</em> = 0.14–0.05 μs) in solution at room temperature as expected. DFT/TD-DFT calculations, carried out to interrogate their exited-state character, reveal that both absorption and emission are MLCT in nature for both complexes in accordant with the experimental observations. Both complexes have also been found to dissolve in all common organic solvents.</div></div>","PeriodicalId":20278,"journal":{"name":"Polyhedron","volume":"288 ","pages":"Article 117983"},"PeriodicalIF":2.6,"publicationDate":"2026-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146081187","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
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Polyhedron
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