Israel Journal of Chemistry最新文献

{"title":"Sputtered NiCu Thin Films on Nickel Foam for Overall Electrochemical Water Splitting in Alkaline Media","authors":"Alina Sermiagin,&nbsp;Bibhudatta Malik,&nbsp;Michal Ejgenberg,&nbsp;Hannah-Noa Barad","doi":"10.1002/ijch.70051","DOIUrl":"https://doi.org/10.1002/ijch.70051","url":null,"abstract":"<p>Development of high-performance and low-cost electrocatalysts is essential for commercialization of alkaline water electrolysis. The fabrication of nickel-copper (NiCu) thin films is reported with a Ni:Cu atomic ratio of 3:1, directly deposited onto nickel foam using sputtering. The as-prepared films are used as dual-activity self-supported electrodes for both the hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) in alkaline media. The 270 nm thick film (NiCu4) was the nominally best-performing HER electrode, although the differences between film thicknesses were within experimental variability. Initially, the electrode requires an overpotential of 215 mV to deliver a current density of −50 mA cm⁻². Remarkably, after 72 h of stability testing, the overpotential significantly decreased to 136 mV. Operando electrochemical impedance spectroscopy and Raman spectroscopy were used to investigate the HER mechanism and dynamic surface state changes on the NiCu4 electrode. This improvement originates from surface structural changes of the Ni<span></span>Cu alloy under HER conditions. For OER, NiCu4 and Ni on Ni foam exhibit equal OER performance in alkaline media, demonstrating a low onset potential of ≈335 mV and an overpotential of 370 mV at 10 mA cm⁻². These results showcase sputtering as a robust, reproducible, waste-free method for the development of electrocatalysts.</p>","PeriodicalId":14686,"journal":{"name":"Israel Journal of Chemistry","volume":"66 6","pages":""},"PeriodicalIF":2.1,"publicationDate":"2026-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ijch.70051","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149205702","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A Conjugated Neodymium-Based Metal−Organic Framework for Efficient Photocatalytic CO2 Cycloaddition","authors":"Liansi Peng,&nbsp;Haozhi Xi,&nbsp;Han Fang,&nbsp;Yuqian Sun,&nbsp;Yun Ling,&nbsp;Qiaowei Li","doi":"10.1002/ijch.70046","DOIUrl":"https://doi.org/10.1002/ijch.70046","url":null,"abstract":"<p>The photocatalytic cycloaddition of CO₂ with epoxides offers a sustainable approach for CO₂ fixation and value-added carbonate synthesis, yet developing well-defined photocatalysts that integrate narrow bandgap, abundant active sites, and strong CO₂ enrichment ability remains challenging. Herein, a new conjugated metal−organic framework (MOF) using hexahydroxytriphenylene as linkers and hexanuclear [Nd₆(<i>μ</i>₆-CO₃)O₁₂]⁸⁻ as inorganic nodes is constructed. The obtained FDM-154 possesses interconnected 13.6 Å pores and a surface area of 532 m² g⁻¹, enabling efficient CO₂ enrichment (28.5 cm³ g⁻¹). Furthermore, FDM-154 features a narrow optical bandgap of 1.12 eV, which facilitates photogenerated charge separation under visible light. Additionally, the MOF backbone is decorated with dense photoactive organic linkers and Nd³⁺ Lewis acid sites that serve as active centers to efficiently activate both CO₂ and epoxide substrates during the photocatalytic process. FDM-154 photocatalyst achieves high yield for CO₂ cycloaddition with epichlorohydrin under mild conditions, resulting from the combined effect of its suitable band structure, accessible active sites, and pore confinement effect.</p>","PeriodicalId":14686,"journal":{"name":"Israel Journal of Chemistry","volume":"66 6","pages":""},"PeriodicalIF":2.1,"publicationDate":"2026-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149205661","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Preparation of Substituted Phenyl Perfluoro-tert-butyl Sulfones and Their Use in Nucleophilic Perfluoro-tert-butylation Reactions","authors":"Jin Cheng,&nbsp;Zhiqiang Wei,&nbsp;Chuanfa Ni,&nbsp;Mingyou Hu,&nbsp;Jinbo Hu","doi":"10.1002/ijch.70047","DOIUrl":"https://doi.org/10.1002/ijch.70047","url":null,"abstract":"<p>A series of perfluoro-<i>tert</i>-butyl aryl sulfones are successfully prepared under mild conditions and subsequently employed as reagents for the perfluoro-<i>tert</i>-butylation of arynes and benzyl bromides, respectively. It is found that the reactions with benzyl bromides generally showed higher efficiency than those with arynes. The substituents on the phenyl ring of the sulfone reagents have a slightly larger influence on the reactions with arynes than those with benzyl bromides. Notably, increasing the loading of sulfone reagents could attenuate the substituent effect in the reactions with benzyl bromides.</p>","PeriodicalId":14686,"journal":{"name":"Israel Journal of Chemistry","volume":"66 6","pages":""},"PeriodicalIF":2.1,"publicationDate":"2026-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149205510","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Millisecond Flash Photonic Regeneration of Conductive Copper From CuO Thin Films","authors":"Shlomit Rosenbaum,&nbsp;Shahar Artzi,&nbsp;Xiaoyuan Wang,&nbsp;Lihi Rikanati,&nbsp;Doron Azulay,&nbsp;Ronen Gottesman","doi":"10.1002/ijch.70049","DOIUrl":"https://doi.org/10.1002/ijch.70049","url":null,"abstract":"<p>The oxidation state of copper governs the functional properties of its oxides but is difficult to set and stabilize. Here, flash photonic heating (FPH) with millisecond pulses partially reduces dense, pulsed-laser-deposited CuO films (≈50 nm) in dilute H₂, creating a laterally heterogeneous Cu/Cu₂O/CuO composite through the film. Cross-sectional elemental mapping resolves Cu-rich domains spanning the film, while X-ray diffraction, Raman, and photoelectron spectroscopy show that oxides are never eliminated. The number of pulse-train repetitions is a single control knob: the lateral conductance recovers by more than six orders of magnitude, and Kelvin probe force microscopy resolves reduced and oxidized domains. In air, reoxidation is self-limiting, following a single logarithmic oxide-growth law: the work function relaxes toward CuO within ≈33 h, while the conductance falls by only ≈5% over 200 h. FPH thus offers a rapid, scalable route to oxidation-state engineering in oxide films.</p>","PeriodicalId":14686,"journal":{"name":"Israel Journal of Chemistry","volume":"66 6","pages":""},"PeriodicalIF":2.1,"publicationDate":"2026-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ijch.70049","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149146757","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Isoreticular Relationships in Two Anthraquinone Tetracarboxylate Metal–Organic Frameworks","authors":"Michel Frigoli,&nbsp;Jérôme Marrot,&nbsp;Franck Millange,&nbsp;Richard I. Walton","doi":"10.1002/ijch.70048","DOIUrl":"https://doi.org/10.1002/ijch.70048","url":null,"abstract":"<p>The synthesis and structural characterization of two metal–organic frameworks constructed from tetratopic polycarboxylate ligands are described. The acid forms of the ligands, 5,5′-(9,10-dioxo-9,10-dihydroanthracene-1,5-diyl)diisophthalic acid (H₂(1,5-AQ-DIPA)) and 5,5′-(9,10-dioxo-9,10-dihydroanthracene-1,4-diyl)diisophthalic acid (H₂(1,4-AQ-DIPA)) are based on a polycyclic anthraquinone core, not previously considered for the crystallization of coordination polymers, and synthesis routes to both are reported. Subsequent solvothermal synthesis between each acid form of the ligand and copper(II) nitrate in a DMF/water mixture yields distinct frameworks whose structures are determined using single-crystal X-ray diffraction: MIL-179 and MIL-180. Both frameworks contain the copper paddle-wheel dimer {Cu₂(COO)₄}, but the distinct molecular structures of the two ligands lead to different framework topologies. MIL-179 has the <b>nbo</b> topology, while MIL-180 possesses the <b>ssa</b> topology. The three-dimensionally connected structures are compared with other frameworks reported in the literature for the same secondary building units linked by other tetratopic linkers, and isoreticular relationships are identified.</p>","PeriodicalId":14686,"journal":{"name":"Israel Journal of Chemistry","volume":"66 6","pages":""},"PeriodicalIF":2.1,"publicationDate":"2026-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ijch.70048","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149014699","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"From Gallium Adsorption Mechanisms to the Rational Design of Metal–Organic Frameworks for Gallium Recovery","authors":"Minshu Chen,&nbsp;Chujun Zhou,&nbsp;Tyler Maddox,&nbsp;Shang Jia,&nbsp;Lei Guo","doi":"10.1002/ijch.70045","DOIUrl":"https://doi.org/10.1002/ijch.70045","url":null,"abstract":"<p>Gallium (Ga) is essential for semiconductor and optoelectronic applications, but high-purity Ga production and supply remain constrained by limited primary resources. Recovering Ga from wastewater offers an alternative source, yet remains difficult because Ga usually occurs at low concentrations and coexists with competing metal ions. Adsorption is a promising strategy owing to its operational simplicity, compatibility with existing treatment infrastructure, and cost-effectiveness. Among all Ga adsorption works, studies on metal-organic framework (MOF)-based Ga adsorbents are still limited, making it challenging to define clear design principles from MOF literature alone. In this mini-review, we summarize representative Ga adsorption studies involving MOFs, polymers/resins, inorganic oxides, and bio-derived or hybrid materials. By comparing functional groups, adsorption performance, and mechanisms, we identify key factors governing Ga capture. Ga adsorption is mainly driven by coordination interactions, particularly with O-donor groups such as hydroxyl, amidoxime, catechol, and hydroxamic acid moieties. Meanwhile, pH-dependent Ga speciation, active-site accessibility, pore structure, and solution complexity strongly influence performance. These insights suggest that future MOF design should emphasize strong O-rich binding sites, accessible pores, controlled functional-group distribution, and chemical stability under realistic recovery conditions.</p>","PeriodicalId":14686,"journal":{"name":"Israel Journal of Chemistry","volume":"66 5","pages":""},"PeriodicalIF":2.1,"publicationDate":"2026-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148942432","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A Life in Glycoscience – Honoring Professor Chi-Huey Wong","authors":"Yuzhong Liu,&nbsp;Matthew Macauley,&nbsp;Mia L. Huang","doi":"10.1002/ijch.70044","DOIUrl":"https://doi.org/10.1002/ijch.70044","url":null,"abstract":"&lt;p&gt;Some scientists shape a field by solving its most difficult problems. Others change the problems that the field can ask. Professor Chi-Huey Wong has done both. This special issue of the &lt;i&gt;Israel Journal of Chemistry&lt;/i&gt; honors Dr. Wong, whose work has helped transform carbohydrate chemistry from a discipline in which complex glycans were difficult to access and study into one that can generate defined structures, examine molecular recognition, and contribute directly to biological discovery and therapeutic development.&lt;/p&gt;&lt;p&gt;Over the four decades of his career, Dr. Wong has repeatedly identified the practical barriers that limited progress in glycoscience and developed the conceptual and experimental tools needed to overcome them. Rather than accepting the structural complexity of carbohydrates as an unavoidable limitation, he has treated it as an invitation to develop new chemistry, new enzymes, and new ways of asking biological questions. His contributions to chemoenzymatic synthesis, programmable one-pot oligosaccharide assembly, glycan probes and microarrays, homogeneous glycoproteins, and glycoengineered antibodies have made complex carbohydrates more accessible not only as synthetic targets, but as precise molecular tools for understanding biology. His scientific leadership has been recognized through many of the field's highest honors, including the Wolf Prize in Chemistry, the ACS Arthur C. Cope Award, and the Welch Award in Chemistry.&lt;/p&gt;&lt;p&gt;&lt;/p&gt;&lt;p&gt;When I (YL) arrived at Scripps Research to start an independent career, I entered a scientific environment already deeply shaped by Dr. Wong. In addition to the new scientific building named after him, the Chi-Huey Wong Laboratories for Biomedical Research (CHWL, &lt;i&gt;see picture&lt;/i&gt;), Dr. Wong's influence is present not only in the institute's legacy, but in the conceptual landscape of modern glycoscience. Across Scripps Research, UC San Diego, and the broader San Diego community, a vibrant network of researchers and collaborations continues to connect carbohydrate chemistry with chemical biology, medicine, and biotechnology. It is therefore a particular pleasure for my laboratory to be moving into the CHWL building and becoming Dr. Wong's lab neighbor.&lt;/p&gt;&lt;p&gt;Dr. Wong was born and raised in Taiwan and received his B.S. degree in 1970 and M.S. degree in 1977 in Biochemical Sciences from National Taiwan University. His early work included protein science and peptide chemistry, including the total synthesis of snake-venom proteins. This biochemical grounding is visible throughout his later career: even at its most technically sophisticated, his chemistry has remained closely connected to biological function. In 1979, he moved to the Massachusetts Institute of Technology for doctoral training in organic chemistry with Professor George M. Whitesides, receiving his Ph.D. in 1982. There, he worked on the use of enzymes as catalysts in organic synthesis, a subject that was still in its infancy at th","PeriodicalId":14686,"journal":{"name":"Israel Journal of Chemistry","volume":"66 5","pages":""},"PeriodicalIF":2.1,"publicationDate":"2026-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ijch.70044","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148848562","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Framework-Material-Based Ion-Selective Membranes for Salinity-Gradient Energy Conversion","authors":"Weipeng Xian,&nbsp;Wenqiang Gao,&nbsp;Anding Xu,&nbsp;Hui Zhang,&nbsp;Yu Han","doi":"10.1002/ijch.70043","DOIUrl":"https://doi.org/10.1002/ijch.70043","url":null,"abstract":"<p>Salinity-gradient energy (SGE), generated from the mixing of waters with different salinities, is a sustainable and widely available source of blue energy. Reverse electrodialysis (RED) is one of the most promising approaches for harvesting SGE, but its performance is largely determined by the ion-selective membranes employed. Crystalline framework materials, particularly metal–organic frameworks (MOFs) and covalent–organic frameworks (COFs), have recently emerged as attractive membrane platforms because their well-defined nanochannels and chemically tunable pore environments enable precise control over ion transport, while their high porosity provides abundant parallel pathways for ion conduction. These features offer unique opportunities to improve ion selectivity and permeability simultaneously, thereby alleviating the trade-off that limits conventional membranes. This review summarizes recent progress in MOF- and COF-based membranes for RED-driven SGE conversion, with emphasis on membrane fabrication, regulation of ion transport through structural and chemical design, and strategies for improving power output. The key challenges that still hinder practical implementation, including scalable fabrication, defect control, membrane stability, and performance in realistic environments, are also discussed, together with future opportunities for advancing framework-material-based membranes toward efficient and durable SGEtechnologies.</p>","PeriodicalId":14686,"journal":{"name":"Israel Journal of Chemistry","volume":"66 5","pages":""},"PeriodicalIF":2.1,"publicationDate":"2026-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148783494","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Structural and Mechanical Characterization of Directionally Frozen Cellulose Scaffolds for Cultivated Meat Applications","authors":"Yarden Munish,&nbsp;Vlad Shumeiko,&nbsp;Shadi Tawil,&nbsp;Yael Gilad,&nbsp;Joseph Kippen,&nbsp;Alon Gershkoviz,&nbsp;Ido Braslavsky,&nbsp;Sharon Schlesinger,&nbsp;Oded Shoseyov","doi":"10.1002/ijch.70042","DOIUrl":"https://doi.org/10.1002/ijch.70042","url":null,"abstract":"<p>Cellulose-based scaffolds have attracted increasing attention for cultivated meat applications due to their abundance, sustainability, and ability to form porous three-dimensional structures. In this study, bamboo-derived cellulose suspensions were processed by high-pressure homogenization and directional freezing, followed by freeze-drying, to fabricate porous scaffolds. The suspensions were characterized by using steady-state and time-dependent rheological measurements, while the resulting scaffolds were evaluated by optical microscopy, scanning electron microscopy, mechanical testing, and cell-culture experiments. Although all suspensions exhibited similar shear-thinning behavior, differences were observed in their time-dependent viscosity evolution and freezing behavior. These differences were associated with variations in scaffold morphology and mechanical properties. Scaffolds prepared from suspensions homogenized for 13 cycles exhibited a pronounced lamellar architecture and directional mechanical response, whereas scaffolds produced under other homogenization conditions displayed less organized structures and reduced anisotropy. To evaluate their suitability for cultivated meat applications, selected scaffolds were seeded with bovine mesenchymal stem cells. Cell-culture experiments demonstrated cell attachment, viability, and distribution throughout the scaffold structure, particularly following the incorporation of cellulose nanocrystals to enhance cell–material interactions. The results demonstrate that directional freezing of bamboo-derived cellulose suspensions can produce porous cellulose scaffolds with structural, mechanical, and biological characteristics relevant to cultivated meat applications.</p>","PeriodicalId":14686,"journal":{"name":"Israel Journal of Chemistry","volume":"66 5","pages":""},"PeriodicalIF":2.1,"publicationDate":"2026-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ijch.70042","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148753042","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Comparing Chemoenzymatic and Conventional Synthetic Strategies to Wall Teichoic Acid Peptidoglycan Fragments","authors":"Min Liu,&nbsp;Kathleen C. Stathoulopoulos,&nbsp;Catherine Leimkuhler Grimes","doi":"10.1002/ijch.70036","DOIUrl":"10.1002/ijch.70036","url":null,"abstract":"<p>In the cell wall of Gram-positive bacteria, wall teichoic acid (WTA) is an abundant and conserved virulence factor. WTAs are especially relevant to Methicillin-resistant <i>Staphylococcus aureus.</i> Tremendous synthetic efforts have permitted investigations of the terminal end of this glycopolymer. However, the peptidoglycan (PG) linked end which utilizes a phosphodiester linkage, has been understudied due to its demanding synthesis. Two convergent routes, both involving a phospho-donor and an acceptor, are proposed and evaluated. In this work, synthesis of the more efficient route is carried out to obtain the phospho-donor and PG acceptor. Careful phosphoramidite coupling is utilized to establish the phosphodiester linkage between WTA and PG fragments. These WTA-PG conjugates will enable more complex studies between the host innate immune response and invading pathogens.</p>","PeriodicalId":14686,"journal":{"name":"Israel Journal of Chemistry","volume":"66 5","pages":""},"PeriodicalIF":2.1,"publicationDate":"2026-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13449244/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148689109","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}