Chemistry - An Asian Journal最新文献_第5页

Pd-PEPPSI Complex Integrated into Hyper-Crosslinked Polymer: A Highly Stable and Reusable Catalyst for Heterogeneous C-C Coupling Reactions. Pd-PEPPSI配合物集成到超交联聚合物中：一种高度稳定和可重复使用的非均相C-C偶联反应催化剂。

IF 3.3 3区化学

Chemistry - An Asian Journal Pub Date : 2025-09-23 DOI: 10.1002/asia.70328

Sughra Manzoor, Saif Ullah, Mengjie Peng, Xiaoyan Wang, Hui Gao, Bien Tan

{"title":"Pd-PEPPSI Complex Integrated into Hyper-Crosslinked Polymer: A Highly Stable and Reusable Catalyst for Heterogeneous C-C Coupling Reactions.","authors":"Sughra Manzoor, Saif Ullah, Mengjie Peng, Xiaoyan Wang, Hui Gao, Bien Tan","doi":"10.1002/asia.70328","DOIUrl":"https://doi.org/10.1002/asia.70328","url":null,"abstract":"Catalyst deactivation due to aggregation or leaching of active metal species remains a major challenge in heterogeneous catalysis. In this study, a homogeneous Pd-PEPPSI (Pyridine-Enhanced Pre-catalyst Preparation, Stabilization, and Initiation) complex was transformed into a single-site heterogeneous catalyst by incorporating it into a hyper-crosslinked polymer (HCP) via a one-step direct knitting strategy. In the Pd-PEPPSI complex, 3-chloropyridine acts as an ancillary ligand, stabilizing the palladium center and facilitating oxidative addition in C─C coupling reactions, while the N-heterocyclic carbene (NHC) serves as the functional ligand. The HCP's hierarchical pore structure and high surface area enhance catalyst recyclability and reduce metal leaching. The HCP-Pd-PEPPSI-3 catalyst efficiently catalyzed Suzuki-Miyaura cross-coupling reactions of various aryl halides and arylboronic acids at a Pd loading of 0.10 mol%, achieving a 99% yield with a turnover frequency (TOF) of 1.23 × 10⁴ h-1. Additionally, it achieved up to 98% yield in the Mizoroki-Heck reaction at the same Pd loading. The catalyst maintained a 90% yield after 10 cycles, demonstrating excellent recyclability. This strategy prevents Pd leaching and aggregation, making HCP-Pd-PEPPSI-3 a versatile and sustainable catalyst for Pd-catalyzed reactions.","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":" ","pages":"e70328"},"PeriodicalIF":3.3,"publicationDate":"2025-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145124042","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

Computational Study on a Copper-Catalyzed Atroposelective Dehydro-Diels-Alder Reaction of Ynamide via Vinyl Cation: Mechanistic Investigations and Chiral Induction Model. 乙烯基阳离子中铜催化酰胺的atroopselective dehydrodiels - alder反应的计算研究：机理研究和手性诱导模型。

IF 3.3 3区化学

Chemistry - An Asian Journal Pub Date : 2025-09-23 DOI: 10.1002/asia.70282

Li-Gao Liu, Ji-Ren Liu, Hong-Li Wu, Shuo-Qing Zhang, Xin Hong

{"title":"Computational Study on a Copper-Catalyzed Atroposelective Dehydro-Diels-Alder Reaction of Ynamide via Vinyl Cation: Mechanistic Investigations and Chiral Induction Model.","authors":"Li-Gao Liu, Ji-Ren Liu, Hong-Li Wu, Shuo-Qing Zhang, Xin Hong","doi":"10.1002/asia.70282","DOIUrl":"https://doi.org/10.1002/asia.70282","url":null,"abstract":"Dehydro-Diels-Alder (DDA) reaction serves as one of the most prominent methods for the synthesis of aromatic compounds. Herein, our study elucidates the mechanism and origin of atroposelectivity of Cu(I)-catalyzed DDA reactions of aryl-substituted 1,6-diyne substrate via density functional theory calculations. The intramolecular nucleophilic cyclization is identified as the rate- and stereo-determining step, with a 2.3 kcal/mol free energy difference between the two atropo-determining transition states. Chiral induction arises from a global-local synergy: the chiral ligand's bulky side arms shape the topological portrait of the catalytic pocket, restricting substrate orientation, while local π-π interactions stabilize the transition state leading to the major product. Absence of the bulky side arms diminishes the atropo-selectivity ( <math> <semantics><mrow><mi>Δ</mi> <mi>Δ</mi></mrow> <annotation>$Delta Delta$</annotation></semantics> </math> G‡ = 0.1 kcal/mol), thus validating our chiral induction model. This work highlights the critical role of microenvironments within catalytic pocket in asymmetric catalysis and provides insights for designing new catalysts.","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":" ","pages":"e70282"},"PeriodicalIF":3.3,"publicationDate":"2025-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145124023","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

Recent Advances in NH₂-MIL-88B(Fe)-Based Photocatalysts for Environmental Remediation: Design Strategies, Mechanisms, and Applications. NH2-MIL-88B（Fe）基环境修复光催化剂的研究进展：设计策略、机理及应用

IF 3.3 3区化学

Chemistry - An Asian Journal Pub Date : 2025-09-23 DOI: 10.1002/asia.202500541

Pravanjan Behera, Priyanka Priyadarshini, Jayashree Panda, Kulamani Parida

{"title":"Recent Advances in NH2-MIL-88B(Fe)-Based Photocatalysts for Environmental Remediation: Design Strategies, Mechanisms, and Applications.","authors":"Pravanjan Behera, Priyanka Priyadarshini, Jayashree Panda, Kulamani Parida","doi":"10.1002/asia.202500541","DOIUrl":"https://doi.org/10.1002/asia.202500541","url":null,"abstract":"Water pollution from industrial sources, including dyes, pharmaceuticals, and heavy metals, continues to be a significant environmental challenge, demanding the development of new, effective treatment methods. Among emerging materials, NH2-MIL-88B(Fe), an amino-functionalized iron-based metal-organic framework (Fe-MOF), has gained prominence for visible-light-driven photocatalytic water purification. Its unique structural attributes, such as adjustable porosity, impressive stability, and strong ability to absorb visible light, make it an excellent candidate for addressing this issue. This review delves into the latest advancements in NH2-MIL-88B(Fe), covering its synthesis, structural modifications, and combinations with other materials to boost its photocatalytic performance. The review highlights its effectiveness in degrading organic pollutants, reducing Cr(VI), and treating wastewater, stressing the importance of synergistic interactions and charge transfer mechanisms for enhanced results. Approaches like ligand functionalization, doping, and the creation of heterojunctions are explored to overcome challenges like exciton recombination and limited light absorption. The role of amine groups in improving charge separation and generating reactive species for pollutant breakdown is also discussed. Finally, the review provides insights into the future of NH2-MIL-88B(Fe)-based photocatalysts, identifying both the hurdles and potential for further advancements in photocatalytic water treatment.","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":" ","pages":"e00541"},"PeriodicalIF":3.3,"publicationDate":"2025-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145124065","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

Electroactive Carbon Regulated Electrodeposition Process of Copper and the Application in Liquid Metals Patterning for Flexible Electronics. 电活性炭调控铜电沉积工艺及其在柔性电子液态金属图像化中的应用。

IF 3.3 3区化学

Chemistry - An Asian Journal Pub Date : 2025-09-22 DOI: 10.1002/asia.202500829

Ying Ze, Huibin Sun, Wei Huang

{"title":"Electroactive Carbon Regulated Electrodeposition Process of Copper and the Application in Liquid Metals Patterning for Flexible Electronics.","authors":"Ying Ze, Huibin Sun, Wei Huang","doi":"10.1002/asia.202500829","DOIUrl":"https://doi.org/10.1002/asia.202500829","url":null,"abstract":"The rapid progress and development of flexible electronic devices have made the traditional metal film preparation and patterning technologies increasingly insufficient to meet the processing requirements of various device forms. This study presents a method for fabricating liquid metal-based flexible circuits via controlled copper ion electrodeposition using nanocarbon black/graphene composite coatings. By systematically adjusting the ratio of nanocarbon black to graphene alongside electroplating voltage and time, we investigated the influence of active carbon coating composition on copper ion deposition kinetics and morphology. The deposition process was characterized in detail using in situ microscopy, an electrochemical workstation, scanning electron microscopy, X-ray diffraction, and contact angle measurements. Results demonstrate that the synergistic combination of graphene's superior electron transport properties with nanocarbon black's nucleation site functionality enables region-selective deposition with uniform nucleation density. The optimized composite coating achieved well-controlled patterned electrodeposition with enhanced selectivity and morphology uniformity. Finally, polymer-assisted transfer successfully produced functional EGaIn@Cu@PDMS flexible circuits, and the performance was validated in stretchable electronic devices. This work provides fundamental insights into interface-engineered electrodeposition while demonstrating a practical route for manufacturing flexible hybrid metal-polymer electronics.","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":" ","pages":"e00829"},"PeriodicalIF":3.3,"publicationDate":"2025-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145111456","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

Siamese Twin Homocarbaporphyrin Dimer: Nonplanar Architecture, Localized Conjugation and Bis-B^III Complex. 连体双高碳卟啉二聚体：非平面结构，局部共轭和双- biii配合物。

IF 3.3 3区化学

Chemistry - An Asian Journal Pub Date : 2025-09-22 DOI: 10.1002/asia.202500856

Rampal Vishwakarma, Prakhar Gupta, Ashutosh Behera, Koushik Mandal, Deepak Chopra, Mainak Das, A Srinivasan

{"title":"Siamese Twin Homocarbaporphyrin Dimer: Nonplanar Architecture, Localized Conjugation and Bis-BIII Complex.","authors":"Rampal Vishwakarma, Prakhar Gupta, Ashutosh Behera, Koushik Mandal, Deepak Chopra, Mainak Das, A Srinivasan","doi":"10.1002/asia.202500856","DOIUrl":"https://doi.org/10.1002/asia.202500856","url":null,"abstract":"Architecturally complex π-systems that defy planarity are increasingly sought for their unconventional electronic behaviour and functional adaptability. Among macrocyclic scaffolds, those capable of sustaining nonplanar yet stable conformations prompt to explore novel regimes of conjugation and stimuli-responsive behaviour. In this study, we present a structurally rigid, double-looped homocarbaporphyrin dimer that adopts a figure-eight conformation, generated by fusing two ortho-benzannulated monomeric units through their C2-bridges. This macrocycle features a Siamese twin molecular architecture wherein the flanking p-phenylene moieties introduce a twist that precludes macrocyclic π-delocalization, rendering the system globally nonaromatic. Notably, the overall geometry of homocarbaporphyrin dimer remains intact upon protonation and BIII coordination, demonstrating exceptional shape persistence under external perturbations. These findings are strongly supported by both spectroscopic and theoretical studies and are unequivocally validated by single-crystal X-ray diffraction analyses. This work advances the design of shape - persistent, nonaromatic macrocyclic systems, offering a blueprint for constructing unconventional π-architectures with tailored electronic properties.","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":" ","pages":"e00856"},"PeriodicalIF":3.3,"publicationDate":"2025-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145111572","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

Horse Spleen Apoferritin-Encapsulated Organoruthenium Complex Bearing Pyrazolyl-Pyridine Ligand for Cytotoxic and Antimicrobial Resistance Modulations. 含吡唑吡啶配体的马脾载铁蛋白包封有机钌配合物对细胞毒性和抗菌素耐药性的调节。

IF 3.3 3区化学

Chemistry - An Asian Journal Pub Date : 2025-09-22 DOI: 10.1002/asia.202500781

Arangasamy Mounica, Balasubramani Saveetha, Arumugam Madan Kumar, Mani Ganeshpandian

{"title":"Horse Spleen Apoferritin-Encapsulated Organoruthenium Complex Bearing Pyrazolyl-Pyridine Ligand for Cytotoxic and Antimicrobial Resistance Modulations.","authors":"Arangasamy Mounica, Balasubramani Saveetha, Arumugam Madan Kumar, Mani Ganeshpandian","doi":"10.1002/asia.202500781","DOIUrl":"https://doi.org/10.1002/asia.202500781","url":null,"abstract":"Horse spleen apoferritin is a highly efficient nanocarrier for encapsulating and delivering metallodrugs, resulting in enhanced stability and therapeutic effectiveness. Herein, Horse spleen apoferritin nanocage(Aftn) is used to encapsulate the model organoruthenium complex bearing a pyrazolyl-pyridine ligand (Ru(bpy)) via a pH-induced disassembly/reassembly method to obtain Ru(bpy)-loaded nanoformulation (Ru-Aftn). This nanoformulation exhibits sustained release of the loaded complex over a period of 6 days with minimal burst release. Ru-Aftn also displays prominent cytotoxicity with better selectivity than the non-encapsulated Ru(bpy) complex against MCF-7 breast cancer cells. AO/EB staining assay revealed that the non-encapsulated complex induced late apoptosis before loading, whereas early apoptosis occurred after being loaded into Aftn. These results support that Aftn can act as a promising carrier for metallodrugs in modulating their molecular mechanism. Nevertheless, it fails to improve the antimicrobial activity of Ru(bpy) when tested against ancomycin-resistant Enterococcus (VRE) strains.","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":" ","pages":"e00781"},"PeriodicalIF":3.3,"publicationDate":"2025-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145111505","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

Impact of the Arrangement Modes of the Antimicrobial Motifs WWR-7 and its Analogs in CAMPs on Their Therapeutic Properties. 抗菌基序WWR-7及其类似物排列方式对camp治疗性能的影响

IF 3.3 3区化学

Chemistry - An Asian Journal Pub Date : 2025-09-22 DOI: 10.1002/asia.70330

Maitery Yadav, Harsh V Singh, Soham Basu, Rajkumar P Thummer, Sunanda Chatterjee

{"title":"Impact of the Arrangement Modes of the Antimicrobial Motifs WWR-7 and its Analogs in CAMPs on Their Therapeutic Properties.","authors":"Maitery Yadav, Harsh V Singh, Soham Basu, Rajkumar P Thummer, Sunanda Chatterjee","doi":"10.1002/asia.70330","DOIUrl":"https://doi.org/10.1002/asia.70330","url":null,"abstract":"This study investigates the impact of the antimicrobial motif (WWR-7, LRWWRRLNH2) arrangement, either in tandem or as branches, on the structure-activity of cationic dimeric antimicrobial peptides (CAMPs). WWR-7 was modified in charge (Arg to Leu) and amino acid composition (Leu to Val/ L- to D- amino acids) to generate dimers aimed at improving their activity, selectivity, and stability. Dimerization enhanced the activity of the dimers over that of the monomer, primarily due to electrostatic interactions. While linear dimers boosted the activity through secondary structure formation, branched dimers contributed to high charge density and protease/serum stability. In low-charged dimers, the branched analogs had better activity than linear ones, while in Val dimers, linear dimers fared better. Branching increased the selectivity over linear dimerization. WWR-14dV, 2BWWR-7 V, and 2BWWR-7dV emerged as the lead peptides having high, salt-tolerant, and fast bactericidal efficacy against ESKAPE pathogens, drug-resistant pathogens (MRSA/VRSA), and fungus Candida albicans. Additionally, these peptides exhibited high antibiofilm efficacy against MRSA and Pseudomonas aeruginosa, protease/serum stability, nondevelopment of resistance against pathogens, high selectivity, and ability to be used in combination with ciprofloxacin to mitigate MRSA infections. Thus, linear and branched dimerization are both efficient techniques, having respective strengths and weaknesses that can be exploited to generate potential antimicrobials.","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":" ","pages":"e70330"},"PeriodicalIF":3.3,"publicationDate":"2025-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145111524","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

Pyridinium Bromide Perbromide (PyHBr₃) Promoted One-Pot Synthesis of Quinoxaline and Aminothiazole Derivatives From Acetophenone. 过溴化吡啶（PyHBr3）促进苯乙酮一锅法合成喹啉和氨基噻唑衍生物。

IF 3.3 3区化学

Chemistry - An Asian Journal Pub Date : 2025-09-22 DOI: 10.1002/asia.202500775

Arabinda Halder, Shobhondeb Giri, Sujan Sk, Mrinal K Bera

引用次数: 0

Metallocene Coordination to Neutral Alkaline Earth Metal Complexes. 茂金属与中性碱土金属配合物的配位。

IF 3.3 3区化学

Chemistry - An Asian Journal Pub Date : 2025-09-22 DOI: 10.1002/asia.70331

Joseph M Parr, Jeremy Mullins, Matthew J Evans, Cameron Jones

引用次数: 0

What are the Quenching Processes in Photocatalyzed Reductive N-Heterocyclic Carbene Organocatalysis? 光催化还原性n -杂环碳化合物有机催化的猝灭过程有哪些？