Souvik Karmakar, Dhiraj Dutta, Bedanta Sengupta, Parthasarathi Das
{"title":"Visible Light-Mediated Sulfonylation of Enamides: Synthesis of (E)-β-Amidovinyl Sulfones","authors":"Souvik Karmakar, Dhiraj Dutta, Bedanta Sengupta, Parthasarathi Das","doi":"10.1002/asia.71015","DOIUrl":"https://doi.org/10.1002/asia.71015","url":null,"abstract":"<div>\u0000 \u0000 <p>In this study, we report a metal- and photocatalyst-free protocol for synthesizing (<i>E</i>)-β-amidovinyl sulfones under visible light via an electron donor–acceptor (EDA) complex formed between thiosulfonates and DMAP in DMSO. This method offers a mild, efficient, and cost-effective approach to access β-amidovinyl sulfones from enamides with <i>E</i>-selectivity and excellent functional group tolerance.</p>\u0000 </div>","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":"21 20","pages":""},"PeriodicalIF":3.2,"publicationDate":"2026-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149205912","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":"Oxidation-Phosphorization Synthesis of Nitrogen-Doped Biochar-Supported CoP for Ammonia Borane Hydrolysis","authors":"Lukuan Zong, Anqi Zhang, Huanhuan Zhang, Huijuan Wei, Xianji Guo","doi":"10.1002/asia.71017","DOIUrl":"https://doi.org/10.1002/asia.71017","url":null,"abstract":"<div>\u0000 \u0000 <p>An oxidation-phosphorization route was adopted to prepare cobalt phosphide supported on nitrogen-doped biochar (denoted as CoP/NBC) for ammonia borane hydrolysis. NBC (i.e., nitrogen-doped biochar) was obtained by NH<sub>4</sub>Cl-assisted pyrolysis of paulownia wood and used to disperse Co species. After in situ reduction, controlled oxidation, and low-temperature phosphorization, CoP nanosheets were formed on the porous biochar support. The optimized CoP/NBC catalyst displayed a turnover frequency (TOF) of 47 mol<sub>H2</sub>∙mol<sub>Co</sub><sup>−1</sup>∙min<sup>−1</sup> at 303 K, and the catalyst had no significant loss of activity over five consecutive cycles. Structural characterization confirmed the formation of crystalline CoP and suggested interfacial electronic interactions between CoP and NBC. The porous N-doped biochar support favored the dispersion of CoP and facilitated mass transfer, while phosphorization modified the electronic state of Co. These combined structural features contributed to the catalytic performance of CoP/NBC and provide a simple strategy for developing low-cost non-noble-metal catalysts for hydrogen generation from ammonia borane.</p>\u0000 </div>","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":"21 20","pages":""},"PeriodicalIF":3.2,"publicationDate":"2026-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149205917","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":"Photochemical Construction of P(St-AM)-Based Cu Species Composite Microspheres for Dye Adsorption","authors":"Tianxing Wu, Hanqi Meng, Xiufang Zhu","doi":"10.1002/asia.71012","DOIUrl":"https://doi.org/10.1002/asia.71012","url":null,"abstract":"<div>\u0000 \u0000 <p>P(St-AM)-based Cu species (Cu, Cu<sub>2</sub>O, CuO) composite microspheres have been successfully prepared by a photochemical construction technology at room temperature. The process involved the photochemical synthesis of P(St-AM) microspheres and the following deposition of Cu species nanoparticles on the surface of P(St-AM) microspheres under the irradiation of 365 nm and 254 nm UV lamps, respectively. The as-obtained composite microspheres were characterized by SEM, XRD, FTIR, DSC, and BET analyses. The as-prepared P(St-AM)-Cu-1 which has the minimum loading amount of Cu species nanoparticles was chosen as the typical adsorbent, and methyl orange was selected as a representative dye containing sulfonic groups. The adsorption capacity reached a maximum of 125.5 mg g<sup>−1</sup> at methyl orange concentration of 276.0 mg L<sup>−1</sup>. The pseudo-second order kinetic model and Langmuir isotherm model described the adsorption behavior. The higher correlation coefficient (R<sup>2</sup>) and smaller values of error functions (χ<sup>2</sup>, root-mean-square error) validated applicability of both the models. The composite microspheres demonstrated excellent cyclic stability. This work presents a promising photochemical strategy for constructing polymer-metal composite adsorbents for dye adsorption.</p>\u0000 </div>","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":"21 20","pages":""},"PeriodicalIF":3.2,"publicationDate":"2026-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149177673","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}
Xinyu Zhao, Lei Wang, Weibing Liu, Xueyou Wang, Long Li, Jingxue Li, Zhichao Shao
{"title":"Hg2+ Ion-Enhanced MOFs-Based Triboelectric Nanogenerator for Self-Powered Antibiotic Degradation","authors":"Xinyu Zhao, Lei Wang, Weibing Liu, Xueyou Wang, Long Li, Jingxue Li, Zhichao Shao","doi":"10.1002/asia.71013","DOIUrl":"https://doi.org/10.1002/asia.71013","url":null,"abstract":"<div>\u0000 \u0000 <p>The development of triboelectric materials is of great significance for the construction of self-powered systems. In this work, a host-guest type material was constructed by introducing Hg<sup>2</sup><sup>+</sup> ions functionally into the pores of metal–organic frameworks through a post-synthesis modification strategy, and it was applied in triboelectric nanogenerators. The results showed that compared with the pure MOF, Zn-MOF(Hg) significantly improved the output performance, with the short-circuit current increasing from 39.7 µA to 52.3 µA and the power density reaching 3317.76 mW/m<sup>2</sup>. This phenomenon was mainly attributed to the fact that Hg<sup>2</sup><sup>+</sup> could act as an efficient charge capture center, inhibiting charge recombination during the friction process, thereby enhancing the output performance. Density functional theory results also indicated that Hg<sup>2</sup><sup>+</sup> ions could increase the highest occupied molecular orbital energy level and reduce the band gap, thereby lowering the energy barrier for electron transition. By constructing a harmful antibiotic degradation system with Zn-MOF(Hg)@TENG, the chloramphenicol degradation rate reached over 98% within 150 min. Moreover, the stable output of Zn-MOF(Hg)@TENG can also easily light up LED lamp groups and other electronic devices. This work provides new ideas for the development of frictional electrochemical materials and the resource utilization of heavy metal ions.</p>\u0000 </div>","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":"21 20","pages":""},"PeriodicalIF":3.2,"publicationDate":"2026-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149177674","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}
Mohd Iqbal Rather, Madhusudhana M. Devadiga, Michał Bystrzejewski, Susheel Kalia, Santosh K. Tiwari, Vijay Kumar
{"title":"Functionalized Graphene Oxide-Embedded Hydrogels for Adsorptive Removal of Aromatic Hydrocarbons From Aqueous Systems","authors":"Mohd Iqbal Rather, Madhusudhana M. Devadiga, Michał Bystrzejewski, Susheel Kalia, Santosh K. Tiwari, Vijay Kumar","doi":"10.1002/asia.71011","DOIUrl":"10.1002/asia.71011","url":null,"abstract":"<div>\u0000 \u0000 <p>In this study, a Lasoda hydrogel-based composite incorporating hydroxyl-functionalized graphene oxide (LA-GO-OH) was developed for efficient adsorption of polycyclic aromatic hydrocarbons (PAHs) from aqueous media. Hydroxyl-functionalized graphene oxide (GO) was synthesized via a thermal shock method and integrated into the Lasoda hydrogel through in situ polymerization. Structural and surface characterization using FESEM, EDS, XRD, FTIR, Raman, and XPS confirmed successful composite formation, preservation of hydroxyl functionalities, and graphitic domains. XPS analysis of the composite after adsorption of naphthalene (Nap) and anthracene (Ant) revealed characteristic C 1s binding energies (∼284.78 eV) corresponding to sp<sup>2</sup>-hybridized aromatic carbon, along with π→π* shake-up satellite features (∼286–289 eV), indicating intact aromatic structures after adsorption. Ant exhibited stronger satellite features than Nap due to greater electronic delocalization. Adsorption studies monitored by UV-visible spectroscopy at λ<sub>max</sub> values of 220 nm (Nap) and 375 nm (Ant) demonstrated maximum removal efficiencies of 97% and 94%, with adsorption capacities of 88 and 128 mg g<sup>−</sup><sup>1</sup>, respectively. Adsorption mainly occurred through π–π interactions between aromatic molecules and graphitic domains. Equilibrium data followed the Langmuir isotherm, kinetics obeyed the pseudo-second-order model (R<sup>2</sup> = 0.99), and thermodynamic analysis confirmed spontaneous, endothermic, and entropy-driven adsorption.</p>\u0000 </div>","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":"21 19","pages":""},"PeriodicalIF":3.2,"publicationDate":"2026-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149178163","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":"Next-Generation Frameworks for Hydrogen Production: A Comparative Review of MOFs, COFs, and HOFs","authors":"Jehan Y. Al-Humaidi, Mohammed Muzibur Rahman","doi":"10.1002/asia.71002","DOIUrl":"10.1002/asia.71002","url":null,"abstract":"<div>\u0000 \u0000 <p>Hydrogen is a key energy vector in the shift toward carbon-neutral energy systems, such as the global hydrogen economy. Of the possible production pathways, catalytic water splitting (photocatalytic, electrocatalytic, and thermos-catalytic) has drawn particular attention for its potential in producing green hydrogen. Recently, framework materials such as metal-organic frameworks (MOFs), covalent organic frameworks (COFs), and hydrogen-bonded organic frameworks (HOFs) have shown enormous potential as precisely tunable catalytic platforms due to their large surface areas, structural flexibility, and tunable electronic properties. Here, we review MOFs, COFs and HOFs for hydrogen production applications, with a focus on structure–property–performance relationships. MOFs provide a range of metal active sites and porosity, but have low conductivity and low stability in water. COFs, thanks to their extended π-conjugation and strong covalent bonds, have better charge mobility and visible-light absorption, making them promising photocatalysts. While less studied, HOFs offer benefits in terms of their easy preparation and reversible structure but suffer from weak intermolecular forces. We explore the advances in band gap engineering, heterojunction formation, cocatalysts, and defect engineering, in terms of key performance indicators of catalytic activity, including turnover frequency (TOF), quantum efficiency, and overpotential. Finally, key issues such as stability, scalability, and standardization, and emerging trends, including machine learning-aided discovery of materials and integrated solar hydrogen systems, are assessed. Of the three types, COFs and MOF-derived catalysts hold the most promise for scalable green hydrogen generation.</p>\u0000 </div>","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":"21 19","pages":""},"PeriodicalIF":3.2,"publicationDate":"2026-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149163511","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}
Debashree Bora, Susantika Saha, Dibyendu Mallick, Ajaz Ahmed Bhat, Biswajit Saha
{"title":"Redox Active Cobalt NHC Catalyst for Oxidation of Alkenes to Carbonyl Compounds at Room Temperature: Water as Source of Oxygen","authors":"Debashree Bora, Susantika Saha, Dibyendu Mallick, Ajaz Ahmed Bhat, Biswajit Saha","doi":"10.1002/asia.71009","DOIUrl":"10.1002/asia.71009","url":null,"abstract":"<div>\u0000 \u0000 <p>A Co(III) complex is synthesized with a redox-active N-heterocyclic carbene (NHC) ligand, and the structure of this complex is established by single-crystal XRD. This bimetallic Fe^Fe^Co complex was explored in an alkene oxidation reaction to give aldehydes as products, which could be accomplished via water oxidation catalysis at room temperature. In the proposed mechanism, both metal-ligand cooperativity as well as bimetallic participation of the two metals Co and Fe (of one unit of ferrocene moiety) further facilitates the two oxidation cycles altogether. The peroxo intermediate in the catalytic water oxidation cycle is proposed to be the crucial intermediate species for the conversion of the unsaturated system into its corresponding aldehydes.</p>\u0000 </div>","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":"21 19","pages":""},"PeriodicalIF":3.2,"publicationDate":"2026-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149101801","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":"Semiconducting Metal Oxide Gas Sensors for VOCs, N2O, and Organophosphorus Compounds: Materials Design, Operando Mechanistic Insights, and Data-Driven Selective Detection","authors":"Soki Yoneda, Yuto Ohata, Shotaro Kubo, Kanna Shibata, Shumpei Goto, Reira Takase, Yusuke Inomata, Muhammad Sohail Ahmad, Tetsuya Kida","doi":"10.1002/asia.71004","DOIUrl":"10.1002/asia.71004","url":null,"abstract":"<div>\u0000 \u0000 <p>Semiconductor metal oxide (SMOX) gas sensors are attractive platforms for detecting volatile organic compounds, greenhouse gases, and hazardous organophosphorus compounds owing to their low cost, structural simplicity, miniaturization potential, and high sensitivity. However, their practical application remains limited by high operating temperatures, poor selectivity, humidity interference, and an incomplete understanding of surface reaction mechanisms. This review discusses recent advances in resistance-change-type SMOX gas sensors from the integrated viewpoints of materials chemistry, <i>operando</i> mechanistic analysis, and data-driven gas identification. Representative n-type oxides, including ZnO, SnO<sub>2</sub>, WO<sub>3</sub>, In<sub>2</sub>O<sub>3</sub>, and TiO<sub>2</sub>, are considered, with ZnO highlighted as a model system for examining crystal-facet engineering, oxygen-vacancy regulation, nanostructure design, noble-metal modification, and heterojunction formation. Particular attention is given to the detection of ethanol, acetone, toluene, nitrous oxide, and dimethyl methylphosphonate as chemically distinct target analytes. <i>Operando</i> spectroscopy and density functional theory (DFT) calculations are discussed as powerful tools for clarifying adsorbed species, reaction intermediates, lattice oxygen participation, and electronic-structure evolution under working conditions. Finally, machine learning (ML)-assisted analysis of multidimensional sensing signals is reviewed as an emerging strategy for improving selectivity and quantitative recognition. This review provides a unified chemical perspective for the rational design of next-generation SMOX gas sensors.</p>\u0000 </div>","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":"21 19","pages":""},"PeriodicalIF":3.2,"publicationDate":"2026-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149126395","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":"Precise Introduction of Small Functional Group (NH2, OH, CH3, CN, F, CF3) in Organic Molecules via Direct C–H Activation","authors":"Sachin, Aadarsh Shrivastav, Shourabh Rav, Upendra Sharma","doi":"10.1002/asia.71005","DOIUrl":"10.1002/asia.71005","url":null,"abstract":"<div>\u0000 \u0000 <p>Small functional groups are responsible for the characteristic chemical reactivity and biological properties of molecules. These functional groups in some way, express the overall characteristic of the molecule. Currently, various methodologies and noble reagents are being explored for the direct introduction of small functional groups such as amine, hydroxyl, fluorine, and methyl into valuable molecules without any further deprotection. Among several synthetic methodologies, the direct C–H activation approach offers a straightforward pathway for the incorporation of small functional groups, connecting the realm of modern organic chemistry with sustainability and versatility. A variety of transition metal catalysts and noble reagents can be used to facilitate such chemical transformations. In the current review, small group functionalization <i>via</i> direct C–H activation is discussed in the following five sections: (i) importance of small functional groups in drug discovery, (ii) amination, (iii) hydroxylation, (iv) methylation, (v) cyanation, (vi) fluorination and trifluoromethylation and the application in late-stage functionalization.</p>\u0000 </div>","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":"21 19","pages":""},"PeriodicalIF":3.2,"publicationDate":"2026-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149126411","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}
Seong Soo Kang, Ki Yun Kim, Minseok Kim, Sang Min Lee, Jea Uk Lee
{"title":"Pitch-Based Carbon Fiber Composites: From Interfacial Engineering to Advanced Thermal Management and Energy Storage","authors":"Seong Soo Kang, Ki Yun Kim, Minseok Kim, Sang Min Lee, Jea Uk Lee","doi":"10.1002/asia.70997","DOIUrl":"10.1002/asia.70997","url":null,"abstract":"<div>\u0000 \u0000 <p>Pitch-based carbon fibers are gaining significant attention as next-generation structural and functional materials owing to their ultrahigh thermal conductivity and exceptional elastic modulus, which surpass those of conventional polyacrylonitrile-based carbon fibers. However, their inherent brittleness and poor interfacial bonding with various matrices pose significant challenges for the practical fabrication of composites. This review provides a comprehensive overview encompassing the entire “materials-processing-applications” cycle of pitch-based carbon fiber composites. We systematically evaluated state-of-the-art surface modification strategies, including wet chemical oxidation, plasma treatment, and bioderived coatings, designed to maximize interfacial adhesion. Subsequently, we discuss tailored manufacturing processes for thermoplastic, thermosetting, and carbon–carbon composite systems. Furthermore, we highlight recent breakthroughs in advanced applications, focusing on high-efficiency thermal interface materials, hierarchical porous supercapacitor electrodes, and thermally conductive metal matrix composites. Finally, we provide insightful perspectives on overcoming current manufacturing bottlenecks and emphasize the explosive application potential of pitch-based carbon fiber composites in next-generation mobility and precision engineering systems that require extreme performance boundaries.</p>\u0000 </div>","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":"21 19","pages":""},"PeriodicalIF":3.2,"publicationDate":"2026-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149101742","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}