Chemistry - An Asian Journal最新文献

{"title":"SO₂-Mediated Decarboxylative C(sp³)-C(sp³) Coupling of Carboxylic Acids Enabled by Photoredox Catalysis.","authors":"Jie Chen, Yuyue Qiu, Mengmeng Fu, Tao Guo, Kaicheng Xu, Ziyu Li, Fan Luo, Shihui Liu","doi":"10.1002/asia.70768","DOIUrl":"https://doi.org/10.1002/asia.70768","url":null,"abstract":"<p><p>Herein, we report a photoredox-catalyzed, decarboxylative C(sp³)-C(sp³) coupling of carboxylic acids, facilitated by SO₂ as a key oxidant. Alkyl radicals, generated via photoredox decarboxylation, undergo homocoupling under the mild oxidizing conditions provided by SO₂. Mechanistic studies confirm that SO₂ serves a crucial role in mediating the radical cross-coupling. This work pioneers an SO₂-driven radical coupling strategy, offering a practical method for constructing C(sp³)-C(sp³) bonds and advancing synthetic applications in pharmaceutical research.</p>","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":"21 9","pages":"e70768"},"PeriodicalIF":3.3,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147809012","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":"Covalent Organic Framework Photo- and Electrocatalysts for Nitrogen Conversion: Recent Advances and Perspectives.","authors":"Xiaohui Li, Jiahao Li, Yongwu Peng, Liangjun Chen","doi":"10.1002/asia.70765","DOIUrl":"https://doi.org/10.1002/asia.70765","url":null,"abstract":"<p><p>Nitrogen plays a vital role in both biological systems and industrial processes, particularly in the synthesis of essential biomolecules and fertilizers. while anthropogenic activities have severely perturbed the nitrogen cycle, resulting in nitrate pollution and eutrophication. However, conventional nitrogen conversion technologies, exemplified by the Haber-Bosch process, are highly energy-intensive and environmentally detrimental. In this context, solar-driven photocatalysis and electrocatalysis have emerged as sustainable strategies for nitrogen conversion under mild conditions. Covalent organic frameworks (COFs), featuring ordered porous structures, tunable pore environments, and tailorable electronic properties, are increasingly recognized as promising platforms for nitrogen reduction reactions (NRR), nitrate reduction reactions (NO₃RR), and C-N coupling reactions. This review summarizes recent progress in COFs-based photo- and electrocatalytic nitrogen conversion, highlighting structure-function relationships, current challenges, and future opportunities for the rational design of efficient COFs catalysts toward sustainable nitrogen transformations.</p>","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":"21 9","pages":"e70765"},"PeriodicalIF":3.3,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147863386","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":"Synthesis of Piezoelectric Cu-MOF Nanosheets for Catalysis Degradation of Refractory Organic Pollutants.","authors":"Boyue Hou, Junshu Wu, Meng Xu, Mupeng Zheng","doi":"10.1002/asia.70740","DOIUrl":"https://doi.org/10.1002/asia.70740","url":null,"abstract":"<p><p>In this study, porphyrin-based Cu-MOF (Cu-tetrakis (4-carboxyphenyl) porphyrin, abbr. Cu-TCPP) nanosheets were synthesized via a facile one-pot method, and their considerable potential as high-performance piezocatalyst was systematically demonstrated. Comprehensive characterizations confirmed typical two-dimensional sheet-like morphology of the material, with lateral dimensions of 500-600 nm and a thickness of ∼1 nm. FT-IR and UV-vis analyses further verified the successful coordination between Cu ions and the TCPP ligand, as evidenced by the disappearance of the N─H vibration and the decrease of Q-band peaks after metallation. The narrow pore-size distribution of 1.2-2.4 nm indicates accessible active sites and favorable adsorption capacity. XPS further verified the coexistence of Cu⁺ and Cu²⁺ species, while piezoelectric force microscopy and piezocurrent measurements unequivocally revealed its remarkable piezoelectric response. Under ultrasonic irradiation, the catalyst generated various reactive oxygen species, thus achieving a degradation efficiency of 93.6% for 20 mg/L methylene blue (MB) solution within 15 min. The potential piezoelectricity of the Cu-TCPP nanosheets originates from their asymmetric internal structure, which is conferred by the presence of centrally chelated copper ions in two distinct valence states. Furthermore, the material maintained outstanding structural stability and catalytic activity after multiple reaction cycles, retaining 84% MB removal after three cycles.</p>","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":"21 9","pages":"e70740"},"PeriodicalIF":3.3,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147831398","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":"Study on Synergistic Modification of Mn-Based Oxides by Co-Doping with Fe and Nb and Their Lithium Storage Performance.","authors":"Jia-Yi Ma, Zi-Yu Dong, Li-Yan Tian, Peng-Fei Wang, Yu-Hang Zhang, Gang Yang, Fa-Nian Shi","doi":"10.1002/asia.70773","DOIUrl":"https://doi.org/10.1002/asia.70773","url":null,"abstract":"<p><p>Lithium-ion batteries are pivotal in modern energy storage systems for their environmental friendliness, high energy density and excellent cycling stability. Mn-based compounds are highly promising anodes for them due to ultrahigh theoretical specific capacity, favorable low conversion potential and tunable electrochemical properties, yet face practical challenges of insufficient structural stability and sluggish charge transfer kinetics. Herein, a Fe─Nb dual-element synergistic modification strategy is proposed: Fe elevates the initial specific capacity via its high theoretical capacity, while Nb reinforces structural stability and cycling retention. Using MnO₂, Fe₂O₃ and Nb₂O₅ as raw materials, Mn─Fe─Nb composite oxide anodes with different molar ratios were synthesized by high-energy ball milling followed by calcination. Electrochemical tests reveal the optimized Mn:Fe:Nb = 8:1:1 (Mn/Fe/Nb-1) exhibits superior performance: a reversible capacity of 1044.53 mAh g^-1 after 130 cycles, and a discharge capacity of 801.35 mAh g^-1 at 1 A g^-1 after 800 cycles. This confirms appropriate Fe─Nb co-doping effectively suppresses structural collapse of Mn-based materials and improves reaction kinetics, greatly extending cycle life and providing a novel approach for designing high-performance lithium-ion battery anodes.</p>","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":"21 9","pages":"e70773"},"PeriodicalIF":3.3,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147863370","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":"Unraveling the Lattice Dynamics and Inherent Emission of NaGdMgTeO₆ Double Perovskite Phosphor.","authors":"Pooja Kaithrikkovil Varriam, Subodh Ganesanpotti","doi":"10.1002/asia.70762","DOIUrl":"https://doi.org/10.1002/asia.70762","url":null,"abstract":"<p><p>Inherently emitting phosphors are gaining significant attention due to their minimal reabsorption, broad emission profiles, high efficiency, and low cost. In the present work, the inherent emission of the double perovskite tellurate NaGdMgTeO₆ is studied for the first time, and the underlying mechanism has been explored in detail. Under 334 nm excitation, the phosphor exhibits an unusual broad NIR emission spanning from 800  to 1200 nm, with a maximum at 948 nm. XPS analysis confirms the presence of Te⁴⁺ ions in the host, owing to the incomplete oxidation to Te⁶⁺, as well as the formation of oxygen vacancies. Upon annealing the phosphor under O₂ atmosphere, a reduction in the content of Te⁴⁺ and oxygen vacancies has been observed, which results in a decrease in the overall emission intensity. Temperature-dependent emission spectra reveal that the phosphor exhibits better thermal stability at low temperatures, but undergoes rapid thermal quenching at high temperatures, with an activation energy of 0.16 eV, obtained from the Arrhenius plot. Temperature-dependent Raman analysis indicates a decrease in the phonon lifetime from 49 ps (303 K) to 37 ps (773 K), resulting in an increase in the number of phonon decay channels, contributing to observed thermal quenching.</p>","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":"21 9","pages":"e70762"},"PeriodicalIF":3.3,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147831408","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":"Selective Adsorption Mechanism of Borderline Acid Metals by Hard Base-Functionalized UiO-66: A Combined Experimental and DFT Study.","authors":"Shuiping Yu, Meng Xi, Yu Luo, Lingling Liu, Rongqi Chen, Mingliang Sun, Haitao Xu, Lin Ding, Wei Liu","doi":"10.1002/asia.70759","DOIUrl":"https://doi.org/10.1002/asia.70759","url":null,"abstract":"<p><p>The principle \"hard acids prefer hard bases\" from the Hard and Soft Acid-Base (HSAB) theory, has gained extensive validation. However, the interaction mechanisms between borderline acid metals and hard base groups remain unclear, limiting the rational design of highly selective adsorption. This study systematically investigates the synthesis of hard base-functionalized UiO-66 materials (UiO-66-X, X = -NH₂, -OH, and -COOH) and their efficacy in adsorbing borderline acid metal (Cu(II), Co(II), Ni(II), Pb(II)). Comprehensive characterization confirms the preservation of the parent framework and the successful introduction of functional groups. Batch adsorption experiments reveal that the solution pH and the pairing between functional groups and metal ions are critical factors affecting adsorption capacity and selectivity. The -OH group exhibits strong affinity for Cu(II), Co(II), and Pb(II), -COOH for Pb(II) and Cu(II), and -NH₂ is exceptionally selective for Ni(II). The mechanism, elucidated through XPS and DFT calculations (ESP, DOS, and adsorption energy), verifies coordination between metal ions and the N/O atoms of hard base groups. Additionally, the introduction of -COOH groups through para-functionalization improves the adsorption rate and selectivity per functional group by modulating the electronic structure. This study provides fundamental insights into the structure-activity relationship, aiding in the design of highly selective MOF-based adsorbents.</p>","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":"21 9","pages":"e70759"},"PeriodicalIF":3.3,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147808982","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":"Nanometric Faujasite (FAU) Zeolite Ion-Exchanged With Metal Ions for Hemostatic and Antimicrobial Applications: A Thromboelastographic and Microbiological Study.","authors":"Guilherme de Paula Guarnieri, Juliana Bergamasco Laurenti, Beatriz Crespo, Edivandra Buzato Silva, Taiza Maschio-Lima, Vilson Serafim Júnior, Eny Maria Goloni-Bertollo, Moacir Fernandes de Godoy, Margarete Teresa Gottardo de Almeida, José Geraldo Nery","doi":"10.1002/asia.70755","DOIUrl":"10.1002/asia.70755","url":null,"abstract":"<p><p>Integrating antimicrobial functionality with the intrinsic clot-promoting properties of zeolites represents a promising strategy for next-generation wound-care materials, where rapid hemorrhage control must be coupled with infection prevention. Here, we investigate nanocrystalline Faujasite (NanoFAU) and its ion-exchanged derivatives to elucidate how extra-framework cation identity governs the balance between hemostatic and antimicrobial performance. NanoFAU samples exchanged with Ag⁺, Ba² ⁺, Ca² ⁺, and Mg² ⁺ were comprehensively characterized by XRD, SEM/HRTEM/EDS, AFM, BET surface area analysis, ² ⁹Si MAS NMR and FT-IR spectroscopy, confirming preservation of the FAU framework and successful cation substitution. All ion-exchanged materials exhibited isoelectric points below physiological blood pH, consistent with negatively charged, procoagulant surfaces. Thromboelastography revealed that Ca² ⁺-exchanged NanoFAU (NanoFAU-Ca) achieved the most pronounced hemostatic response (R = 1.1 min; K = 1.2 min; MA = 60.3 mm), whereas Ag⁺-exchanged NanoFAU (NanoFAU-Ag) provided strong antimicrobial activity against Staphylococcus aureus (ATCC 25923) and Candida albicans (ATCC 90028), displaying bactericidal and fungistatic effects, respectively. Importantly, NanoFAU-Ag maintained cell viability above the ISO 10993-5 cytotoxicity threshold in HaCaT keratinocytes. These findings demonstrate that ion exchange enables rational tuning of NanoFAU to achieve complementary hemostatic and antimicrobial functionalities while preserving cytocompatibility, establishing NanoFAU as a versatile inorganic platform for multifunctional wound management and supporting future in vivo evaluation.</p>","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":"21 9","pages":"e70755"},"PeriodicalIF":3.3,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13129264/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147758202","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A Simple and Rapid Spontaneous Emulsification System for Highly Stable Emulsions.","authors":"Jingwen Luo, Lei Sun, Shiming Zhang, Yanji Chu, Bin Yuan, Chenhao Song, Hui Liu, Yapei Wang","doi":"10.1002/asia.70766","DOIUrl":"https://doi.org/10.1002/asia.70766","url":null,"abstract":"<p><p>It is of great importance to maintain the stability of emulsions in order to perform their functions. However, emulsions are usually thermodynamic unfavorable systems that require a large amount of energy to prepare and high concentration emulsifiers to maintain the stability. This study presents a simple, rapid emulsifying system that can prepare highly stable emulsions in a low-energy manner. The spontaneous formation of emulsion droplets is driven by the neutralization reaction between fatty acids and triethylamine. Moreover, the accumulation of the reaction products at the water-oil interfaces can stabilize the emulsion droplets. Compared with emulsions prepared by fatty acid triethylamine salts, the spontaneous emulsifying system exhibits a superior emulsifying effect and yields emulsions with improved stability. A combination of systematic interfacial measurements, viscoelastic characterization and molecular dynamics (MD) simulations is used to elucidate the mechanism of spontaneous emulsification and emulsion stabilization. This straightforward, rapid, and reaction-driven emulsification strategy offers a new approach to achieving spontaneous emulsification and provides a novel method of preparing stable emulsions.</p>","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":"21 9","pages":"e70766"},"PeriodicalIF":3.3,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147831395","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 Fluorescence and Aggregation-Induced Emission in Cyclohexadienone Spiro Molecules: Mechanism and Applications.","authors":"Yaming Yu, Jianbin Xu, Jiaoxia Zhang, Peng Gao","doi":"10.1002/asia.70764","DOIUrl":"https://doi.org/10.1002/asia.70764","url":null,"abstract":"<p><p>Most planar organic fluorescent dyes suffer from aggregation-caused quenching (ACQ) due to strong intermolecular π-π interactions, severely limiting their utility in practical applications. To address this, we developed a strategy based on cyclohexadienone spiro molecules that exhibit aggregation-induced emission (AIE) and dual fluorescence properties. Using spiro-PT-OMeTAD as a model, we demonstrated that its dual emission peaks arise from a locally excited (LE) state and a twisted intramolecular charge transfer (TICT) state. Structural analysis revealed that the cyclohexadienone spiro architecture is critical to this performance: the electron-withdrawing carbonyl group facilitates charge separation (promoting TICT), while the asymmetric spiro geometry provides steric hindrance that prevents close stacking and ACQ. The universality of this mechanism was confirmed by synthesizing a series of derivatives (spiro-PT-BA, spiro-PT-PA, and spiro-PT-MA), all of which displayed similar dual fluorescence. Finally, leveraging these optical characteristics, we successfully used spiro-PT-BA as a polarity-sensitive probe to detect water content in tetrahydrofuran (THF) and as a visual temperature sensor.</p>","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":"21 9","pages":"e70764"},"PeriodicalIF":3.3,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147831443","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":"Exciplex-Forming Co-Host Systems for Efficient TADF and Phosphorescent Organic Light-Emitting Diodes.","authors":"Pei-Yu Lai, Kuan-Yu Su, Yu-Ru Yang, Yi-Jhan Huang, Chin-Wei Lu, Chih-Hao Chang","doi":"10.1002/asia.70757","DOIUrl":"https://doi.org/10.1002/asia.70757","url":null,"abstract":"<p><p>In this study, a series of bipolar acceptor materials, DPQCN-oPhCz, DPQCN-pPhCz, and DPQCN-pPhCzt, featuring a cyano-substituted diphenylquinoxaline (DPQCN) core conjugated with various phenylcarbazole derivatives, were successfully synthesized and characterized. The molecular design introduces a strongly electron-withdrawing cyano substituent into the diphenylquinoxaline framework to lower the LUMO energy level and improve the bipolar charge-transport properties. Photophysical investigations and theoretical calculations revealed distinct intramolecular charge transfer characteristics, resulting from the effective spatial separation of the frontier molecular orbitals. Specifically, the introduction of tert-butyl groups and a twisted conformation in DPQCN-pPhCzt not only increased the steric bulk to suppress molecular aggregation but also facilitated the formation of an efficient exciplex when blended with the donor material TCTA. Thermodynamic analysis using the Rehm-Weller equation further confirmed the strong driving force for exciplex formation in these D-A systems. These results, characterized by high thermal stability, well-aligned energy levels, and minimal singlet-triplet energy gaps (ΔE_ST), underscore the significant potential of this DPQCN-based series as high-performance exciplex hosts for achieving OLEDs with high brightness and low turn-on voltages.</p>","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":"21 9","pages":"e70757"},"PeriodicalIF":3.3,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147758175","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}