Chemistry - An Asian Journal最新文献_第4页

Heteroatom-Doped Graphene Quantum Dots: Recent Advancements in Energy Storage, Optical, and Optoelectronic Applications. 杂原子掺杂石墨烯量子点：在储能、光学和光电子应用方面的最新进展。

IF 3.3 3区化学

Chemistry - An Asian Journal Pub Date : 2025-09-26 DOI: 10.1002/asia.70293

Prachi Kumari, Rajen Kundu

引用次数: 0

Electric Fields Interrupt with Lewis Acidity and Reverse Back to Lewis Base Function. 电场中断与刘易斯酸度和反向回到刘易斯碱函数。

IF 3.3 3区化学

Chemistry - An Asian Journal Pub Date : 2025-09-26 DOI: 10.1002/asia.202500839

Lopita Swain, Esha Paul, Karthik Gopakumar, Rajeev Ramanan

{"title":"Electric Fields Interrupt with Lewis Acidity and Reverse Back to Lewis Base Function.","authors":"Lopita Swain, Esha Paul, Karthik Gopakumar, Rajeev Ramanan","doi":"10.1002/asia.202500839","DOIUrl":"https://doi.org/10.1002/asia.202500839","url":null,"abstract":"External electric fields (EFs) are shown to have a significant impact on various aspects of chemical reactivity. It alters the electron transfer in the pristine reaction mechanism. The Lewis acid (LA)- catalysed Oxa Diels-Alder (ODA) reaction between cyclopentadiene (Cp) and formaldehyde (HCHO) is studied here using density functional theory (DFT) calculations. EF is a vector that catalyses the reaction in one direction and inhibits the reaction in the opposite direction. However, an increased inhibiting EF also promoted a shift toward catalytic activity. The EF value that brings maximum inhibition in the reaction is referred to as the electrostatic resistance point (ERP). Stronger EF overpower the conventional LA catalysis through the Normal Electron Demand (NED) pathway and bring Lewis base (LB) catalysis through the Inverse Electron Demand (IED) mechanism. The LAs attached to the HCHO control the ERP values depending upon the resistance power that the functional group provides against the EF. Thus, EF serves as a reactivity modulator, a mechanistic switch between Lewis acid-base character and a probe for complex electron shift in reactions.","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":" ","pages":"e00839"},"PeriodicalIF":3.3,"publicationDate":"2025-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145172113","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

Theoretical Study on Coordination Chemistry of Two Water-Soluble Ligands for Stripping Separation of Transplutonium Ions. 两种水溶性配体萃取分离钚离子的配位化学理论研究。

IF 3.3 3区化学

Chemistry - An Asian Journal Pub Date : 2025-09-26 DOI: 10.1002/asia.202500835

Pin-Wen Huang, Peng Ren, Ming Qi

{"title":"Theoretical Study on Coordination Chemistry of Two Water-Soluble Ligands for Stripping Separation of Transplutonium Ions.","authors":"Pin-Wen Huang, Peng Ren, Ming Qi","doi":"10.1002/asia.202500835","DOIUrl":"https://doi.org/10.1002/asia.202500835","url":null,"abstract":"Purification and mutual separation of trivalent actinides (An3⁺: Am, Cm, Bk, Cf) present significant challenges in nuclear waste treatment. Elucidating complexation mechanisms with stripping ligands is crucial for ligand development. Given the radiotoxicity, quantum chemical methods are essential. This DFT study investigates chelation of An3⁺ ions with water-soluble ligands H2L2ᵖʸ and H2L2ᵖᶻ. Probable back-extraction complexes ([AnLi(H2O)ⱼ]⁺, AnLi(NO3)(H2O)k) exhibit near-identical geometries with minor An─O/N bond length variations. Analyses reveal enhanced chelating ability for diamine N atoms adjacent to carboxylate O versus N-heterocyclic donors (pyridine/pyrazine). Crucially, interaction intensity and partial covalency between An3⁺ and donor atoms (NAM, OCA, NPY/PZ) display a distinct bimodal variation with Cm as the turning point. This trend likely originates from closer orbital energy matching between the 5f orbitals of Am/Bk/Cf and ligand 2p orbitals compared to Cm. Thermodynamic analyses demonstrate superior back-extraction ability for H2L2ᵖʸ, while H2L2ᵖᶻ excels in Am/Eu separation. The downward-upward trend in reaction free energies aligns with covalency variations, suggesting potential intra-group separation capability for all four ions. Estimated separation factors SFAm/Cm, SFBk/Cm, and SFCf/Cm are projected within 2.45-3.45.","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":" ","pages":"e00835"},"PeriodicalIF":3.3,"publicationDate":"2025-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145172174","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

Alternative Dehydrogenases to Address Glucose Dehydrogenase Cross-Reactivity During NADPH Regeneration. 在NADPH再生过程中处理葡萄糖脱氢酶交叉反应的替代脱氢酶。

IF 3.3 3区化学

Chemistry - An Asian Journal Pub Date : 2025-09-26 DOI: 10.1002/asia.202500654

Jhilik Mondal, Piyal Das, Syed Masood Husain

引用次数: 0

Biographene-Based Nanozyme for Rapid Colorimetric Detection of Oxytetracycline via Peroxidase-Mimicking Activity. 模拟过氧化物酶活性的生物烯纳米酶快速比色检测土霉素。

IF 3.3 3区化学

Chemistry - An Asian Journal Pub Date : 2025-09-25 DOI: 10.1002/asia.202500820

Chayanika Hazarika, Darpana Dutta, Esha Roy, Rituparna Duarah, Rituraj Konwar, Manash R Das

{"title":"Biographene-Based Nanozyme for Rapid Colorimetric Detection of Oxytetracycline via Peroxidase-Mimicking Activity.","authors":"Chayanika Hazarika, Darpana Dutta, Esha Roy, Rituparna Duarah, Rituraj Konwar, Manash R Das","doi":"10.1002/asia.202500820","DOIUrl":"https://doi.org/10.1002/asia.202500820","url":null,"abstract":"Advancing sustainable graphene production is crucial to unlocking its potential in biomedicine and environmental technology. Although graphene offers exceptional electrical, mechanical, and surface properties, its large-scale utilisation is hindered by conventional synthesis methods such as chemical vapour deposition (CVD), which are costly, energy-intensive, and environmentally harmful. In this study, we report an eco-friendly, scalable, and cost-effective protein-assisted approach for exfoliating graphite into high-quality graphene in aqueous media using bovine serum albumin (BSA) as a biodegradable dispersant. BSA not only enables efficient exfoliation but also introduces abundant protein-derived functional groups, improving aqueous stability (zeta potential: -28.8 mV at pH 8) and ensuring long-term colloidal dispersion. These moieties enhance dispersibility while imparting intrinsic peroxidase-like activity under acidic conditions. Utilizing this nanozymatic activity, we developed a colorimetric sensing platform for rapid and sensitive detection of oxytetracycline (OTC). The assay is based on the inhibition of biographene-catalyzed oxidation of 3,3',5,5'-tetramethylbenzidine in the presence of hydrogen peroxide, where OTC suppresses radical-mediated oxidation. The sensor exhibited high selectivity with a low detection limit of 2.66 µM and showed good biocompatibility, underscoring its biomedical potential. The green strategy enables sustainable production of functional graphene, positioning biographene as a promising material for diverse sensing applications.","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":" ","pages":"e00820"},"PeriodicalIF":3.3,"publicationDate":"2025-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145135955","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

Raster Image Correlation Spectroscopy (RICS): Principles, Applications, and Advances in Studying Molecular Dynamics in Live Cells. 光栅图像相关光谱学（RICS）：活细胞分子动力学研究的原理、应用和进展。

IF 3.3 3区化学

Chemistry - An Asian Journal Pub Date : 2025-09-25 DOI: 10.1002/asia.70333

Arun K Upadhyaya, Chanchal Sharma, Dibyendu K Sasmal

{"title":"Raster Image Correlation Spectroscopy (RICS): Principles, Applications, and Advances in Studying Molecular Dynamics in Live Cells.","authors":"Arun K Upadhyaya, Chanchal Sharma, Dibyendu K Sasmal","doi":"10.1002/asia.70333","DOIUrl":"https://doi.org/10.1002/asia.70333","url":null,"abstract":"Raster image correlation spectroscopy (RICS) has become an advanced fluorescence imaging technique that has high spatiotemporal resolution to examine the molecular dynamics, transport, and interactions in live cells. In contrast to the traditional point-scanning fluorescence correlation spectroscopy (FCS), RICS provides high accuracy to determine biological interactions and molecular diffusion across many regions of a live cell, utilizing the raster scanning mode of a confocal microscope to get information about spatial and temporal correlation. RICS is applied to get global information about diffusion and dynamic in systems, such as living cells, polymer networks, suspension of nanoparticles, where conventional FCS is not useful to capture decay of correlation function based on spatial location. In this review, the fundamental principle and applications of RICS at the molecular level in a heterogeneous environment are thoroughly covered, e.g., examining the protein diffusion and dynamics in cell. Finally, limitation of this imaging methods and new developments in combination of other imaging techniques are also highlighted.","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":" ","pages":"e70333"},"PeriodicalIF":3.3,"publicationDate":"2025-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145135946","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

Asymmetric Synthesis of Dihydrocoumarins via Squaramide-Catalyzed [4 + 2] Annulation Reaction of 2-Hydroxy α-Amido Sulfones and Azlactones. squar酰胺催化2-羟基α-氨基砜与氮唑内酯[4 + 2]环化反应合成二氢香豆素。

IF 3.3 3区化学

Chemistry - An Asian Journal Pub Date : 2025-09-25 DOI: 10.1002/asia.70334

Bin Pan, Fei-Xiang He, Qiu-Yu Liao, Ming Liu, Lei Zhu, Sheng-Li Niu, Wu Liang, Fei Du, Ting Liu, Qin Ouyang

引用次数: 0

Tungsten Oxide-Based Thin Films Prepared by Physical Vapor Deposition Techniques for Photoelectrochemical Water Splitting: A Review. 物理气相沉积法制备用于光电化学水分解的氧化钨基薄膜研究进展。

IF 3.3 3区化学

Chemistry - An Asian Journal Pub Date : 2025-09-23 DOI: 10.1002/asia.70317

Muhammed L Fatty, Budur A Almabadi, Abuzar Khan, Badriah Sultan, Qasem A Drmosh

{"title":"Tungsten Oxide-Based Thin Films Prepared by Physical Vapor Deposition Techniques for Photoelectrochemical Water Splitting: A Review.","authors":"Muhammed L Fatty, Budur A Almabadi, Abuzar Khan, Badriah Sultan, Qasem A Drmosh","doi":"10.1002/asia.70317","DOIUrl":"https://doi.org/10.1002/asia.70317","url":null,"abstract":"The global energy demand has raised concerns about environmental sustainability and economic stability. This has led to significant efforts to identify renewable and green energy sources. Hydrogen production through the water splitting reaction offers a promising pathway, since it yields hydrogen and oxygen as by-products. The photoelectrochemical technique has emerged as one of the effective methods for water splitting, offering vast potential for hydrogen production on a large scale. Among the various semiconductor photoelectrodes, tungsten oxide (WO3) has attracted considerable attention due to its suitable band gap, good chemical stability, and strong absorption in the visible region. This review addresses the fabrication of WO3-based thin films prepared using physical vapor deposition (PVD) techniques, including thermal evaporation, sputtering, pulsed laser deposition (PLD), and electron-beam evaporation. Reported studies highlight that sputtered WO3 films often achieve high photocurrent densities and improved crystallinity, while PLD enables precise control over stoichiometry and nanostructure. Nevertheless, key challenges persist, such as controlling stoichiometry and phase stability, charge-carrier recombination, limited light absorption due to the wide band gap, low conductivity, and structural defects. The review concludes strategies to overcome these limitations, such as conducting thermal and electron-beam evaporation, combining CVD and PVD techniques, and optimizing sputtering conditions.","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":" ","pages":"e70317"},"PeriodicalIF":3.3,"publicationDate":"2025-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145124104","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

Targeted PFAS Removal Using MXene-Based Polymeric Membranes: Toward Cleaner Water Solutions. 使用mxene基聚合物膜去除PFAS：朝向更清洁的水解决方案。

IF 3.3 3区化学

Chemistry - An Asian Journal Pub Date : 2025-09-23 DOI: 10.1002/asia.202500822

I Ihsanullah

{"title":"Targeted PFAS Removal Using MXene-Based Polymeric Membranes: Toward Cleaner Water Solutions.","authors":"I Ihsanullah","doi":"10.1002/asia.202500822","DOIUrl":"https://doi.org/10.1002/asia.202500822","url":null,"abstract":"Per- and polyfluoroalkyl substances (PFAS) have become pollutants of significant concern due to their chemical resilience and harmful effects on both the environment and human health. In recent years, research has increasingly focused on developing efficient techniques for the removal of PFAS from water sources. Among these, polymeric membranes have demonstrated strong potential for PFAS separation and purification. Surface modification of polymeric membranes using two-dimensional (2D) materials, particularly MXenes, has emerged as a promising strategy to enhance membrane performance. The integration of MXenes into polymeric matrices has been shown to significantly improve membrane selectivity, permeability, and overall efficiency in PFAS remediation. This review presents a comprehensive overview of the synthesis strategies for MXene-based polymeric membranes and their applications in removing various PFAS compounds from aqueous environments. It covers fabrication techniques, evaluates the structural and functional properties of the resulting membranes, and explores the mechanisms governing PFAS-membrane interactions. Additionally, the review highlights key technological challenges and provides recommendations for future research to advance MXene-enabled water purification technologies.","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":" ","pages":"e00822"},"PeriodicalIF":3.3,"publicationDate":"2025-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145124139","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}

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Accelerating Electrochemical Hydrogen Evolution by Introducing Local Proton Source in Non-Heme Iron (III) Complexes. 在非血红素铁（III）配合物中引入局部质子源加速电化学析氢。

IF 3.3 3区化学

Chemistry - An Asian Journal Pub Date : 2025-09-23 DOI: 10.1002/asia.70259

Bharath M, Meenakshi Rana, Santanu Pattanayak, Pankaj Kumar, Vyom Prakash Tyagi, Suresh Bommakanti, Serhiy Demeshko, Rajeev Gupta, Aryya Ghosh, Munmun Ghosh

{"title":"Accelerating Electrochemical Hydrogen Evolution by Introducing Local Proton Source in Non-Heme Iron (III) Complexes.","authors":"Bharath M, Meenakshi Rana, Santanu Pattanayak, Pankaj Kumar, Vyom Prakash Tyagi, Suresh Bommakanti, Serhiy Demeshko, Rajeev Gupta, Aryya Ghosh, Munmun Ghosh","doi":"10.1002/asia.70259","DOIUrl":"https://doi.org/10.1002/asia.70259","url":null,"abstract":"In the present study, we synthesized three non-heme FeIII complexes (FeIII[L1]2)- (1), (FeIII[L2]2)- (2), and (FeIII[L3]2)- (3) with 4-hydroxy pyridine-2,6-dicarboxamide (H2L1), pyridine-2,6-dicarboxamide (H2L2), and 4-methoxy pyridine-2,6-dicarboxamide (H2L3) based ligands and characterized by elemental analysis, single crystal X-ray diffraction (for 1 and 2), EPR, Möβbauer (for 1), UV-visible and infrared spectroscopy. Hydrogen evolution reaction (HER) catalytic activity of 1, 2, and 3 was performed in the presence of acids such as acetic acid (AcOH) and triethylammonium chloride/triethylammonium tetrafluoroborate (HNEt3Cl/HNEt3BF4) in dimethylformamide (DMF). In these compounds, the primary coordination sphere of Fe remained similar, forming bis-chelated hexa-coordinated complexes. However, single-crystal X-ray structures revealed that the Fe-Npyridine bond distances are different in 1 and 2. Noteworthily, complex 1 showed better electrocatalytic activity for HER with a kcat of 1.4 ± 0.07 × 105 M-1s-1 in the presence of HNEt3Cl, highlighting the significant effect of internal hydroxy functional groups in HER. The presence of additional hydroxy groups in complex 1 plays the role of a local proton source and facilitates an intramolecular proton transfer, which enhances the catalytic rates for HER. The current study emphasizes how tuning the ligand scaffolds in FeIII complexes could potentially affect their catalytic activity for HER.","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":" ","pages":"e70259"},"PeriodicalIF":3.3,"publicationDate":"2025-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145124039","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