Chemistry - An Asian Journal最新文献

{"title":"Nanoscopic [(NH₄)₆V₁₀O₂₈.6H₂O]_n Where n = 27882-90189 Soft-Oxometalates-Based Photocatalyst for Conversion of Benzene to Phenol under Ambient Conditions.","authors":"Nidhi Kumari, Joyeeta Lodh, Andrew C Bates, Kateryna Kostenkova, Debbie C Crans, Soumyajit Roy","doi":"10.1002/asia.70120","DOIUrl":"https://doi.org/10.1002/asia.70120","url":null,"abstract":"<p><p>In a quest to find new routes for the functionalization of very strong C─H bonds, such as those found in benzene, we have reported nanoscopic soft-oxometalates-based photocatalytic oxidation of benzene to phenol by dioxygen (O₂) in acetonitrile-water (1:1) solvent under visible light irradiation at room temperature using Eosin Y (EY) as a photosensitizer and (NH₄)₆V₁₀O₂₈.6H₂O as the pre-catalyst. Studies reveal that photosensitizer Eosin Y (EY) transfers an electron to the catalyst V^V ₁₀O₂₈ ^6- under visible light irradiation for in- situ generation of H₂O₂ from O_2, which is followed by efficient hydroxylation of benzene to phenol with a high turnover number of 156.8. The present study is a blueprint for efficient C─H activation via a synergistic combination of photocatalysis and vanadium catalysis, giving excellent yield and selectivity.</p>","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":" ","pages":"e70120"},"PeriodicalIF":3.5,"publicationDate":"2025-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144323960","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 Review on Luminescent Benzoselenadiazole Derivatives: Comparison with Benzothiadiazoles, Properties, Applications, and Trends.","authors":"Brenno A D Neto, John Spencer, Alexandre A M Lapis","doi":"10.1002/asia.202500004","DOIUrl":"https://doi.org/10.1002/asia.202500004","url":null,"abstract":"<p><p>This review comprehensively analyzes key parameters that govern the use of luminescent benzoselenadiazole (BSD) derivatives. We examine the main factors affecting their photophysical properties, including structural variations, heavy atom effects and environmental conditions, and discuss their potential applications in bioimaging technology. Whenever possible, the properties were compared to those of 2,1,3-benzoxadiazole and 2,1,3-benzothiadiazole analogues. This review also highlights emerging trends and future directions in the research and development of BSD compounds, underscoring their significance and potential impact in advancing phototechnology and related fields. We also aim to offer valuable insight into the versatile nature of BSD derivatives and their expanding role in scientific and technological innovations.</p>","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":" ","pages":"e00004"},"PeriodicalIF":3.5,"publicationDate":"2025-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144323991","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":"Core-Shell Engineering of ZIF-67@N-Doped Hollow Carbon Spheres via Diffusion Strategy for Enhanced Oxygen Evolution Reaction.","authors":"Deepak Upreti, Krishankant, Rekha Rani, Srinivasan Alagar, Amit Kumar Sharma, Garima Agrawal, Vivek Bagchi","doi":"10.1002/asia.202500646","DOIUrl":"https://doi.org/10.1002/asia.202500646","url":null,"abstract":"<p><p>Metal-organic frameworks (MOFs) serve as versatile precursors for creating long-lasting electrocatalysts. Core-shell engineering is a unique method for activating MOFs for electrocatalytic applications without altering their fundamental characteristics. Encapsulating MOFs in nitrogen-doped hollow carbon spheres (N-HCS) improves electrocatalyst performance by modulating the band structure. We synthesized a ZIF-67@N-HCS catalyst by embedding nanocrystals into nitrogen-doped hollow carbon spheres using a diffusion-driven, space-confined approach. For the electrocatalytic oxygen evolution reaction (OER), the ZIF-67@N-HCS catalyst shows decreased overpotential of 290 mV to reach the current density of 20 mA cm⁻² and better reaction kinetics, as demonstrated by a lower Tafel slope value of 86 mV dec⁻¹. The catalyst has a high electrochemically active surface area (ECSA) of 320 cm² and an electric double-layer capacitance of 12.8 mF cm⁻². This study proposed a strategy of core-shell engineering, which has the potential to improve the efficiency of electrocatalysts for water oxidation.</p>","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":" ","pages":"e00646"},"PeriodicalIF":3.5,"publicationDate":"2025-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144323959","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":"Dual-Antenna Trimetallic Lanthanide Complexes for Enhanced Near-Infrared Luminescence.","authors":"Krishanu Bandyopadhyay, Abhineet Verma, Satyen Saha","doi":"10.1002/asia.202500017","DOIUrl":"https://doi.org/10.1002/asia.202500017","url":null,"abstract":"<p><p>Lanthanide [Ln(III)] ions are known for their unique near-infrared (NIR) luminescence, typically achieved through indirect excitation via the antenna effect. Organic ligands, such as N,N-bis(3-methoxysalicylidene)-1,4-diamino butane (L), in combination with Zn, have previously demonstrated their effectiveness in enhancing lanthanide NIR emission, as seen in bimetallic [L-Zn-Ln] complexes, which employs a single antenna. In this study, we present a new series of trimetallic Zn-Ln complexes, [(L-Zn)₂-Ln], featuring two compartmental ligand-Zn complexes, acting as antennas, aimed at further improving energy transfer efficiency to the lanthanide centers. Comprehensive characterization using SCXRD, PXRD, FT-IR, and CHN analyses confirmed the structural integrity of these complexes. Notably, SCXRD and XPS revealed significant structural differences between the bimetallic and trimetallic systems. The impact of the additional antenna, replacing nitrate and methanol-known contributors to nonradiative relaxation in the bimetallic [L-Zn-Ln] complexes-was thoroughly examined. Photophysical studies across both visible and NIR regions demonstrated substantial enhancements in luminescence, particularly in the NIR region, attributed to the inclusion of the second antenna, highlighting its role in improving the overall energy transfer process.</p>","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":" ","pages":"e00017"},"PeriodicalIF":3.5,"publicationDate":"2025-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144315655","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":"[23]Crown Ether Incorporating Metastable [2]Rotaxanes and Pseudo[2]rotaxanes: Selective and Sensitive Fluoride Anion Detection with 4-Isopropylphenyl Stoppered [2]Rotaxane.","authors":"Mukesh Jaiswal, Suvankar Dasgupta","doi":"10.1002/asia.202401680","DOIUrl":"https://doi.org/10.1002/asia.202401680","url":null,"abstract":"<p><p>Two metastable [2]rotaxanes incorporating [23]crown-7-ether, with cyclohexyl and 4-isopropylphenyl slippage stoppers, are explored. The axle component of metastable rotaxanes is comprised of a secondary ammonium station and an anthracene fluorophore. In the presence of fluoride anion, the deslippage of [23]crown-7-ether over the slippage stoppers is induced by ion-pair formation with fluoride anion, followed by neutralization. Both the rotaxanes displayed highly selective fluoride anion responsiveness, however, 4-isopropylphenyl being less bulky, exhibited more sensitive fluoride anion detection in acetonitrile-water medium. The addition of excess TBACl, TBABr, and TBAI did not invoke any switching response in acetonitrile-water medium (v/v = 99:1, 98:2, and 97:3). Furthermore, the metastable [2]rotaxane with a 4-isopropylphenyl slippage stopper could successfully detect ionic fluoride anions such as potassium fluoride and cesium fluoride well below the W.H.O. permissible limit. In addition, [23]crown-7-ether generated pseudo[2]rotaxane complexes with a series of ammonium axles comprised of variable terminal groups.</p>","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":" ","pages":"e01680"},"PeriodicalIF":3.5,"publicationDate":"2025-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144315580","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":"Radical and Redox Forms of Pyridyl Appended MB-DIPYs.","authors":"Dijo Prasannan, Yuriy V Zatsikha, Victor N Nemykin","doi":"10.1002/asia.202500694","DOIUrl":"https://doi.org/10.1002/asia.202500694","url":null,"abstract":"<p><p>We discuss the synthesis and properties of pyridine-appended nickel(II) complex of \"Manitoba dipyrromethene\" (Ni^II(MB-DIPY)), which is stable radical at ambient conditions. The Ni^II(MB-DIPY), 6^• shows absorption at ∼1300 nm and a g-value of ∼2.00 in EPR. The redox features of Ni^II(MB-DIPY) were studied by electro- and spectroelectrochemistry. The reduced form, 6^-, has an intense NIR absorption and a broad spectrum in the visible region, making this compound a prospective non-fullerene acceptor for light-harvesting. The axial coordination and photophysical properties of the supramolecular dyad formed between pyridine-appended Ni^II(MB-DIPY) with zinc 5,10,15,20-tetrakis-(pentafluorophenyl)porphyrin (TPP^F20Zn) were also studied. Ni^II(MB-DIPY) 6^• failed to interact with TPP^F20Zn. However, reduced Ni^II(MB-DIPY) in its anionic form, 6^-, self-assembles and forms a donor-acceptor dyad with TPP^F20Zn with a binding constant of K_a = 1.13 × 10² M^-1 and fluorescence quenching constant of K_SV = 1.31 × 10³ M^-1. This work represents the first report on the potential of MB-DIPYs to self-assemble and form a donor-acceptor type supramolecular dyad with TPP^F20Zn. This study explored the potential of the MB-DIPYs to act as a non-fullerene acceptor in light-harvesting supramolecular donor-acceptor systems formed via non-covalent interactions.</p>","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":" ","pages":"e00694"},"PeriodicalIF":3.5,"publicationDate":"2025-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144315656","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":"Asymmetric Fluorinated Cyclopenta[2,1-b:3,4-b']Dithiophene-Based Hole-Transporting Materials for Perovskite Solar Cell.","authors":"Kun-Mu Lee, Jui-Ting Pan, Wen-Tzu Chen, Chia-Hui Lin, Zhe-Wei Wang, Wei-Hao Chiu, Wei-Chen Chu, Ya-Ho Chang, Jen-Fu Hsu, Sie-Rong Li, Shih-I Lu, Hsiao-Chi Hsieh, Chih-Wei Hu, Chih-Hung Chen, Jian-Ming Chiu, Kang-Ling Liau, Gao Chen, Yun-Shuo Liu, Shih-Sheng Sun, Yan-Duo Lin","doi":"10.1002/asia.202500719","DOIUrl":"https://doi.org/10.1002/asia.202500719","url":null,"abstract":"<p><p>A series of asymmetric hole-transporting materials (HTMs) based on cyclopenta[2,1-b;3,4-b']dithiophene cores tethered with p-methoxytriphenylamines donor units with or without incorporated fluorine atoms were rationally designed, synthesized, and employed in perovskite solar cells (PSCs). A comprehensive comparison is conducted encompassing the absorption spectra, electrochemical characteristics, thermal stability, density functional theory (DFT) calculations, hole mobility, and surface morphology, as revealed by scanning electron microscopy (SEM) and atomic force microscopy (AFM), steady-state and time-resolved photoluminescence measurements, water contact angle analyzes, and photovoltaic parameters of the PSCs. The fluorinated HTMs, P-oF and P-mF, demonstrated enhanced hole mobility and more efficient charge extraction at the perovskite/HTM interface compared to their non-fluorinated counterpart. Consequently, PSCs employing P-oF and P-mF achieved power conversion efficiencies (PCEs) of 21.52% and 19.78%, respectively, with negligible hysteresis, outperforming devices based on P-H, which exhibited a PCE of 17.05%. Moreover, the operational stability of the device incorporating P-series as the HTM exceeded that of the PSCs employing the benchmark material of spiro-OMeTAD. The findings presented herein underscore the facile accessibility and potential of asymmetric compounds as alternative HTMs for PSCs. The results provide valuable insights and serve as a reference for the development of optimal HTMs for PSCs.</p>","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":" ","pages":"e00719"},"PeriodicalIF":3.5,"publicationDate":"2025-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144315581","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":"Aryl Thiocyanate as an Organic 'CN' Source: Access to Thiocyano-Thioesters from Cyclic Thioacetals.","authors":"Mousumi Behera, Shubham Y Shukla, Pankaj D Dharpure, Ramakrishna G Bhat","doi":"10.1002/asia.202500423","DOIUrl":"https://doi.org/10.1002/asia.202500423","url":null,"abstract":"<p><p>A facile, transition metal-free method has been developed for the synthesis of thiocyano-thioesters. It employs cyclic thioacetals and aryl thiocyanate as an organic 'CN' source, facilitated by organophotocatalyst under the visible light irradiation. Additionally, the diaryl disulfide by-products have been efficiently repurposed as a recyclable and reusable substrates for the sustainable synthesis of aryl thiocyanates, supporting the circular chemical economy. This method exhibits broad functional group tolerance and is applicable to five- to eight-membered cyclic thioacetals. The method also proved to be scalable on gram quantity. A series of control experiments, fluorescence quenching, and cyclic voltammetry analysis supported the proposed reaction mechanism.</p>","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":" ","pages":"e00423"},"PeriodicalIF":3.5,"publicationDate":"2025-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144300801","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":"<ArticleTitle xmlns:ns0=\"http://www.w3.org/1998/Math/MathML\">Theoretical Investigation of the Stabilities and Reactivities of <ns0:math> <ns0:semantics> <ns0:mrow><ns0:msub><ns0:mi>Au</ns0:mi> <ns0:mi>m</ns0:mi></ns0:msub> <ns0:msub><ns0:mi>Cu</ns0:mi> <ns0:mi>n</ns0:mi></ns0:msub> </ns0:mrow> <ns0:annotation>${rm Au}_m{rm Cu}_n$</ns0:annotation></ns0:semantics> </ns0:math> Metallic Clusters (m+n = 13).","authors":"Pradeep Kumar Pal, U Deva Priyakumar","doi":"10.1002/asia.202401926","DOIUrl":"https://doi.org/10.1002/asia.202401926","url":null,"abstract":"<p><p>AuCu nanoclusters have widespread application in reactions like activation of <math> <semantics><msub><mi>CO</mi> <mn>2</mn></msub> <annotation>${rm CO}_2$</annotation></semantics> </math> , selective oxidation, and cross-coupling reactions. In this study, we investigate the stepwise doping of copper atoms in a pure 13-atom gold cluster, denoted as <math> <semantics> <mrow><msub><mi>Au</mi> <mi>m</mi></msub> <msub><mi>Cu</mi> <mi>n</mi></msub> </mrow> <annotation>${rm Au}_m{rm Cu}_n$</annotation></semantics> </math> (m+n = 13). The genetic algorithm based on the artificial bee colony algorithm has been utilized to model various isomers of each composition. The potential energy landscape of these clusters was analyzed by means of the density functional theory method with pure Perdew-Burke-Ernzerhof (PBE) functional. We identify the minimum energy isomer for each cluster composition to evaluate molecular properties like HOMO-LUMO gap, binding energy/atom, second order difference in energy, vertical ionization energy, and vertical electron affinity. Notably, the introduction of copper atoms in these clusters enhances their stability and reactivity. Distinct odd-even oscillations due to close shell electronic configurations are absent, as all cluster compositions have an overall open shell configuration. To assess the catalytic activity of the clusters, we study the adsorption energies of small molecules like <math> <semantics><msub><mi>O</mi> <mn>2</mn></msub> <annotation>${rm O}_2$</annotation></semantics> </math> and <math> <semantics> <mrow><msub><mi>C</mi> <mn>2</mn></msub> <msub><mi>H</mi> <mn>4</mn></msub> </mrow> <annotation>${rm C}_2{rm H}_4$</annotation></semantics> </math> on all available sites on the cluster. This study thereby comprehensively explores the range of copper-doped 13-atom gold cluster compositions and their implications on their structure-property relationships vital for catalysis and nanomaterial applications.</p>","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":" ","pages":"e01926"},"PeriodicalIF":3.5,"publicationDate":"2025-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144300797","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 Fluorescent Diaminoterephthalate Probe for Monitoring Lipid Droplet Dynamics and Ferroptosis in Mammalian Cells.","authors":"Shrishti P Pandey, Arkaprava Chowdhury, Swagata Bhowmick, Anindya Datta","doi":"10.1002/asia.202500436","DOIUrl":"https://doi.org/10.1002/asia.202500436","url":null,"abstract":"<p><p>Ferroptosis is a Fe²⁺ induced programmed cell death pathway that has attracted significant attention over the last decade. It is manifested in a marked increase in the polarity of lipid droplets (LDs), as it involves lipid peroxidation. LD dynamics is affected significantly by this process. Design and choice of appropriate lipophilic fluorescent probes are crucial for monitoring these phenomena. This is the motivation for the present endeavor focused on R1, a cell permeable, lipophilic diaminoterephthalate fluorescent probe with a strongly polarity-dependent fluorescence intensity and lifetime. Using confocal laser scanning microscopy (CLSM) and fluorescence lifetime imaging microscopy (FLIM), LD behavior in mammalian cells under ferroptosis-inducing conditions has been observed. R1 has been found to exhibit a marked decrease in fluorescence intensity and lifetime in LDs upon treatment with erastin, thus reflecting the increased polarity brought about by ferroptosis. This sets the field for future use of R1 to investigate ferroptosis-related processes, possibly leading to disease diagnostics and formulation of therapeutic strategies.</p>","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":" ","pages":"e00436"},"PeriodicalIF":3.5,"publicationDate":"2025-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144300798","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}