Journal of Cluster Science最新文献

{"title":"Correction: Enhanced Crystallinity Behavior of Egg White Mediated h-MoO3 Using Acid Precipitation Method for Improved Anti-Bacterial Properties against Multi Drug Resistant Bacteria","authors":"M. Dhanasekar, Mudaliar Mahesh Margoni, Govindan Rajivgandhi, Gnansekaran Chackaravarthi, Muthuchamy Maruthupandy, Nandhu Suresh, V. Krishna, Ali Akbari-Fakhrabadi, Natesan Manoharan, Franck Quero, N. Asokan, Sakthivel Sankaran, Naiyf S. Alharbi","doi":"10.1007/s10876-026-03054-7","DOIUrl":"10.1007/s10876-026-03054-7","url":null,"abstract":"","PeriodicalId":618,"journal":{"name":"Journal of Cluster Science","volume":"37 7","pages":""},"PeriodicalIF":4.1,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149132016","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Facile C=S Bond Cleavage of the Coordinated Thiosaccharinate Ligand at a Triosmium Center: Synthesis and Structure of Sulfido-Capped Triosmium Clusters Bearing a Bridging-Imine or a Capping-Amine Ligand","authors":"Israt Jahan,&nbsp;Md. Sohag Hasan,&nbsp;Md. Jadu Mia,&nbsp;Subas Rajbangshi,&nbsp;Vladimir N. Nesterov,&nbsp;Shariff E. Kabir,&nbsp;Shishir Ghosh","doi":"10.1007/s10876-026-03113-z","DOIUrl":"10.1007/s10876-026-03113-z","url":null,"abstract":"<div><p>The reaction of thiosaccharinate (tsac)-bridged triosmium cluster [Os₃(CO)₁₀(µ-H)(µ-N,S-tsac)] (<b>1</b>) with PPh₃ at an elevated temperature has been examined. Thus, cluster <b>1</b> reacts with PPh₃ at 110 °C to afford five new sulfido-capped triosmium clusters [Os₃(CO)₈(PPh₃)(µ₃-C,N-C₆H₄CHNSO₂)(µ₃-S)] (<b>4</b>), [Os₃(CO)₇(PPh₃)₂(µ₃-C,N-C₆H₄CHNSO₂)(µ₃-S)] (<b>5</b>), [Os₃(CO)₆(PPh₃)(µ-H)₂{µ-P(C₆H₄)Ph₂}(µ-C,N-C₆H₄CNSO₂)(µ₃-S)] (<b>6</b>), [Os₃(CO)₅(PPh₃)₂(µ-H)₂{µ-P(C₆H₄)Ph₂}(µ-C,N-C₆H₄CNSO₂)(µ₃-S)] (<b>7</b>), and [Os₃(CO)₅(PPh₃)₂(µ-H)₂{µ-P(C₆H₄)Ph₂}(µ-C,N-C₆H₄CNSO₂)(µ₃-S)] (<b>8</b>), via C=S bond cleavage of the coordinated tsac ligand with the sulfur being captured by the triosmium core. The previously reported triosmium [Os₃(CO)₉(PPh₃)(µ-H)(µ-N,S-tsac)] (<b>2</b>) was also isolated in this reaction. A series of control experiments is also conducted to examine the relationships among the products and to probe the reaction pathways leading to the formation of these clusters. The molecular structures of all the new clusters (<b>4</b>–<b>8</b>) have been unequivocally established by X-ray crystallography.</p><h3>Graphical Abstract</h3><p>Facile C=S bond cleavage of the coordinated thiosaccharinate ligand at a triosmium center: Synthesis and structure of sulfido-capped triosmium clusters bearing a bridging-imine or a capping-amine ligand</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":618,"journal":{"name":"Journal of Cluster Science","volume":"37 7","pages":""},"PeriodicalIF":4.1,"publicationDate":"2026-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149068011","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Exopolysaccharide-Mediated Green Synthesis of Zinc Oxide Nanoparticles from Bacillus licheniformis LHG166: Antimicrobial, Antioxidant, and Anti-inflammatory Properties","authors":"Ibrahim M. Ibrahim,&nbsp;Zahraa Falah Azeez,&nbsp;Anes A. Al-Sharqi,&nbsp;Ahmed Eid Alharbi,&nbsp;Issam Alshami,&nbsp;Ahmad A. Sherbini,&nbsp;Sultan A. Alfawaz,&nbsp;Hanadi A. Alahmadi,&nbsp;Faisal Miqad K. Albaqami,&nbsp;Nidal Mohammed Zabermawi,&nbsp;Gharieb S. El-Sayyad,&nbsp;Marwa Yousry A. Mohamed,&nbsp;Zinab Alatawi,&nbsp;Ahmed Ghareeb","doi":"10.1007/s10876-026-03107-x","DOIUrl":"10.1007/s10876-026-03107-x","url":null,"abstract":"<div><p>This investigation demonstrates the successful biogenic synthesis of zinc oxide nanoparticles (ZnO-NPs) using exopolysaccharide extracted from <i>Bacillus licheniformis</i> LHG166 as an environmentally sustainable reducing agent. Characterization confirmed ZnO formation through UV-Vis absorption at 368 nm and FT-IR Zn-O stretching vibrations at 606 –448 cm⁻¹, while TEM revealed spherical nanoparticles (10–50 nm) and XRD confirmed hexagonal wurtzite structure with 17.17 nm crystallite size. DLS analysis showed a hydrodynamic diameter of 11.5 nm and electrostatic stabilization (Z-potential: -30.47 mV). Biocompatibility assessment revealed considerable hemocompatibility, with hemolysis below 2.5% even at 1000 µg/mL. Antioxidant evaluation demonstrated radical-scavenging activity, with DPPH IC₅₀ of 30.33 µg/mL and ABTS IC₅₀ of 15.6 µg/mL. Anti-inflammatory assessment revealed COX enzyme inhibition with IC₅₀ values of 59.31 µg/mL for COX-1 and 75.58 µg/mL for COX-2. Antimicrobial evaluation demonstrated broad-spectrum activity against both Gram-positive and Gram-negative bacteria, with MIC values ranging from 15.62 to 31.25 µg/mL and MBC ratios consistently 2:1. Antifungal activity revealed considerable efficacy, particularly against <i>P. glabrum</i>, with MIC/MFC ratios of 1:1 for <i>C. albicans</i> and <i>C. tropicalis</i>, establishing multifunctional therapeutic potential for biomedical applications that address antimicrobial resistance with integrated antioxidant and anti-inflammatory properties.</p></div>","PeriodicalId":618,"journal":{"name":"Journal of Cluster Science","volume":"37 7","pages":""},"PeriodicalIF":4.1,"publicationDate":"2026-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149068077","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Doxycycline-Loaded Silver Nanoparticle–Embedded Chitosan Hydrogel for Enhanced Wound Healing: Formulation Optimization, Characterization, and In Vivo Evaluation","authors":"Ritesh A. Fule,&nbsp;Abhishek D. Nagdeve,&nbsp;Pankaj D. Nagpure,&nbsp;Aishwarya S. Rangurwar,&nbsp;Gamal Osman Elhassan,&nbsp;Saleh Alfuraih,&nbsp;Md Ali Mujtaba,&nbsp;Ameeduzzafar Zafar","doi":"10.1007/s10876-026-03114-y","DOIUrl":"10.1007/s10876-026-03114-y","url":null,"abstract":"<div><p>This study focuses on the development of a doxycycline (DOC)-loaded silver nanoparticle (DOC-AgNPs) embedded chitosan hydrogel for enhanced wound healing. DOC-AgNPs were synthesized via chemical reduction using silver nitrate as the metal precursor, trisodium citrate (TSC) as the reducing/stabilizing agent, and DOC as the model drug. Optimization was performed using Box–Behnken Design (BBD) with silver nitrate concentration, TSC level, and stirring speed as independent variables. The optimized nanoparticles exhibited particle size of 186 nm, polydispersity index of 0.280, zeta potential of − 28.6 mV, and entrapment efficiency of 84%. The DOC-AgNPs were characterized by Fourier transform infrared spectroscopy, differential scanning calorimetry, X-ray diffraction, and field emission scanning electron microscopy. Furthermore, these DOC-AgNPs were incorporated into a chitosan-based hydrogel, which showed desirable organoleptic properties, pH (6.5), viscosity (22,800 cP), spreadability (15 g·cm/s), and swelling index. In vitro drug release in phosphate buffer (pH 7.4) exhibited a biphasic release pattern characterized by an initial burst release followed by sustained drug release. Antibacterial activity, evaluated by agar well diffusion against <i>Staphylococcus aureus</i> and <i>Escherichia coli</i>, showed significantly larger inhibition zones (34 mm and 36 mm) for DOC-AgNP hydrogel compared to plain AgNPs (21 mm and 23 mm), indicating synergistic effects. In vivo wound healing studies demonstrated accelerated wound closure, complete re-epithelialization, and improved tissue regeneration with minimal inflammation. Histological analysis and hydroxyproline content further supported enhanced healing. These results suggest that the DOC-AgNP hydrogel offers a promising platform for localized, sustained drug delivery, combining antimicrobial and regenerative properties for advanced wound care.</p></div>","PeriodicalId":618,"journal":{"name":"Journal of Cluster Science","volume":"37 7","pages":""},"PeriodicalIF":4.1,"publicationDate":"2026-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149068076","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Comparative Monte Carlo Study of Magnetic Properties and Compensation Temperature in Cubic and Hexagonal Nanostructure","authors":"L. Ouzaroual,&nbsp;M. Naziruddin Khan,&nbsp;Z. Fadil,&nbsp;H. Kerrai,&nbsp;Saleh O. Allehabi,&nbsp;E. Salmani,&nbsp;Abdulrahman A. Alsayyari,&nbsp;Chaitany Jayprakash Raorane,&nbsp;Seong-Cheol Kim","doi":"10.1007/s10876-026-03112-0","DOIUrl":"10.1007/s10876-026-03112-0","url":null,"abstract":"<div><p>In this paper, we investigate the thermal magnetic properties of two 2D mixed-spin nanostructures, the square SQ-C4S4’3 and the hexagonal HEX-C5S4 geometries, using a systematic Monte Carlo study through the Blume-Capel model. We show that both systems undergo a first-order phase transition from a low-temperature ferrimagnetic state to a high-temperature paramagnetic state, accompanied by a compensation temperature t_comp, at which the total magnetization vanishes. Importantly, the hexagonal structure HEX-C5S4 has better magnetic stability, displaying consistently higher critical transition temperatures (t_r) than the square structure; such critical transition temperature differences between the two lattices have been attributed to the enhanced spin coordination in the hexagonal lattice. Besides, we show here that the increase in exchange interactions raises both t_comp and t_r significantly, the crystalline field δ has affected only t_comp, and the external magnetic field h suppresses the latter and slightly decreases t_r. Finally, we conclude that the results have given unambiguous evidence that symmetry and the topology of the lattice represent two crucial design parameters, which fundamentally determine the magnetic stability and the characteristics of thermal phase transition of the mixed-spin nanostructures.</p></div>","PeriodicalId":618,"journal":{"name":"Journal of Cluster Science","volume":"37 7","pages":""},"PeriodicalIF":4.1,"publicationDate":"2026-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149068031","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synergistic Chemo-Photodynamic Therapy Using Verteporfin–Paclitaxel PLGA Nanoparticles","authors":"Saba Naz,&nbsp;Aleena Zahid,&nbsp;Ahmat Khurshid","doi":"10.1007/s10876-026-03115-x","DOIUrl":"10.1007/s10876-026-03115-x","url":null,"abstract":"<div><p>Breast Cancer (BC) is one of the most diagnosed cancers in women worldwide. Chemotherapy is the first-line treatment approach for BC. Chemotoxicity limits the treatment efficacy and demands the need for modified chemotherapy. Chemo-photodynamic therapy is a promising approach to minimize the toxicity by reducing the dose of the chemotherapeutic agent. It combines chemotherapy with photodynamic therapy to achieve maximum treatment efficacy by targeting cancer cells in two different ways. In the present study, verteporfin (VP) and paclitaxel (PTX) co-loaded poly (lactic-co-glycolic acid) nanoparticles (VP-PTX NPs) were synthesized using a single emulsion method with a drug ratio of PTX: VP (1:2). The Hydrodynamic size and the morphology of the synthesized NPs were measured using dynamic light scattering (DLS) and transmission electron microscopy (TEM). Results show an average hydrodynamic size of 205 nm, and TEM results show NP sizes in the range 120–186 nm. PDI of 0.2 shows the synthesis of monodispersed NPs. Fourier transform infrared spectroscopy (FTIR) of synthesized NPs was performed, which shows the successful encapsulation of both drugs in the PLGA matrix. In vitro cellular uptake, dark and phototoxicity study of VP-PTX NPs was performed on two different breast cancer cell lines (BT-474, MDA-MB-231). A dose-dependent reduction in cell viability was observed in both types of cell lines. The Reactive Oxygen Species (ROS) assay was performed on both cell lines. The results show an increase in ROS production after light exposure, particularly in BT-474 cells. Thus, VP-PTX NPs induced more pronounced cell death in breast cancer cells, highlighting their potential as a chemo-photodynamic agent.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":618,"journal":{"name":"Journal of Cluster Science","volume":"37 7","pages":""},"PeriodicalIF":4.1,"publicationDate":"2026-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149068009","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Agar Hydrogel Confinement Regulates Fe/Fe3O4 Nanoparticles in Graphitized Carbon for High-Performance Symmetric Supercapacitors","authors":"Yaxiong Ji,&nbsp;Qi Luo,&nbsp;Yizhe Hao,&nbsp;Xiaonie Yang,&nbsp;Jianyi Liu,&nbsp;Sen Li,&nbsp;Qian Chen,&nbsp;Yang You","doi":"10.1007/s10876-026-03110-2","DOIUrl":"10.1007/s10876-026-03110-2","url":null,"abstract":"<div><p>Controlling Fe₃O₄ nanoparticle size within conductive carbon matrices remains a key challenge for high-performance pseudocapacitive electrodes. Here, we report an in situ, one-step pyrolysis route that uses agar hydrogel as both a sacrificial carbon precursor and a tunable confinement template to synthesize Fe/Fe₃O₄ nanoparticles encapsulated in graphitized template carbon (Fe/Fe₃O₄@GTC). Hydrogen-bond-mediated double-helix crosslinking in agarose confines Fe³⁺ nucleation, and the density of confinement cavities increases with agar concentration. Increasing agar concentration from 1 to 3 wt% decreases the Fe₃O₄ particle size from approximately 241 to 14 nm, with the 3 wt% sample forming predominantly single-coherent-domain nanoparticles, as supported by the close agreement between the TEM particle size and Scherrer coherent-domain size (14.0 vs. 14.9 nm). Further increasing agar to 4 wt% causes a counterintuitive size rebound to approximately 80 nm. This rebound occurs because the proportional increase in K₂CO₃ raises the precursor pH from approximately 12.2 to 12.4, disrupting hydrogen-bonded crosslinks and weakening confinement, as supported by broadened O-H FTIR bands and a 1.9-fold increase in Scherrer FWHM. The optimized Fe/Fe₃O₄@GTC-3% electrode delivers 615.60 F g^− 1 at 0.5 A g^− 1 and retains 77.4% of its capacitance at 10 A g^− 1, with an <i>R</i>_<i>ct</i> of 0.070 Ω. The symmetric supercapacitor achieves 48.02 Wh kg^− 1 at 725 W kg^− 1 and retains 91.74% capacitance after 10,000 cycles. These results connect hydrogel crosslinking density, Fe₃O₄ particle size, and electrochemical performance, providing design principles for size-controlled metal oxide/carbon composites.</p></div>","PeriodicalId":618,"journal":{"name":"Journal of Cluster Science","volume":"37 7","pages":""},"PeriodicalIF":4.1,"publicationDate":"2026-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149068010","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Mesoporous Silica Nanoparticles: Insights into Property-Function Relationships and Their Toxicological Implications","authors":"Ibemusu Michael Otele,&nbsp;Trisha Patel,&nbsp;Muhammad Sohail Arshad,&nbsp;Zeeshan Ahmad,&nbsp;Hussaina Banu,&nbsp;Neenu Singh","doi":"10.1007/s10876-026-03111-1","DOIUrl":"10.1007/s10876-026-03111-1","url":null,"abstract":"<div><p>Mesoporous silica nanoparticles (MSNs) offer several advantages and features for drug delivery, including large surface areas, customisable pore sizes, controllable particle sizes and shapes, dual-functional surfaces, ease of synthesis, and chemical and thermal stability. These nanoparticles show promise as carriers that encapsulate and protect toxic, delicate, soluble, or insoluble therapeutic molecules or imaging agents from premature release. Given the immense potential of MSNs in nanomedicine-based therapeutics, an in-depth toxicity assessment of these materials, separate from the drug payload, must be conducted to ensure the safety and efficacy of these drug delivery vehicles. This review systematically examines how the structural classification of MSNs and physicochemical properties, including particle size, surface charge, shape, pore size, surface coating, crystallinity and functionalisation, govern their toxicological profile. It critically analyses systemic toxicological dynamics, immune recognition, protein corona formation, cytotoxicity, and genotoxic pathways; it also examines the endocytosis pathways through which MSNs are internalised and how particle charge and geometry dictate them, supported by in vivo findings. Finally, the review evaluates the emerging role of computational approaches, including molecular docking and dynamics simulations of inflammasome-associated proteins in elucidating the molecular mechanisms underlying MSN-induced toxicity, an area where direct experimental characterisation remains limited.</p></div>","PeriodicalId":618,"journal":{"name":"Journal of Cluster Science","volume":"37 7","pages":""},"PeriodicalIF":4.1,"publicationDate":"2026-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149068030","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Plasma-Engineered ZnO–Phenolic Bio-Nanocomposite: Redox-Modulated Immune Melanization and Wound Repair in Drosophila melanogaster","authors":"Gauri Deshpande,&nbsp;Gouri Satre,&nbsp;Radha Mhapankar,&nbsp;Shalaka Kamble,&nbsp;Trupti Shinde,&nbsp;Bipinchandra Khade,&nbsp;Ajit Dhatrak,&nbsp;Vikas Mathe,&nbsp;Archana Sharbidre","doi":"10.1007/s10876-026-03108-w","DOIUrl":"10.1007/s10876-026-03108-w","url":null,"abstract":"<div><p>Although zinc oxide nanoparticles are widely investigated for wound healing, most studies report improved closure without explaining how nanoparticle surface chemistry influences host repair responses in vivo. Here, we developed a plasma-engineered ZnO–phenolic bio-nanocomposite by functionalizing thermal plasma–synthesized ZnO nanoparticles with selectively isolated phenolic compounds from <i>Tridax Procumbens</i>. The composites retained antioxidant activity comparable to the plant phenolic extract of <i>Tridax Procumbens</i> while maintaining physicochemical stability. The bio-nanocomposite exhibited significant antioxidant activity, showing concentration-dependent responses in ABTS and FRAP assays, with statistical analysis revealing significant effects of concentration, treatment, and their interaction (<i>p</i> &lt; 0.0001). The composite demonstrated comparable radical scavenging activity at lower concentrations, while exhibiting enhanced reducing power under specific conditions. In a <i>Drosophila melanogaster</i> wound model, exposure up to 250 mg/L showed no adverse effects on survival, development, gut morphology, or locomotor behaviour. Notably, treatment significantly reduced intracellular reactive oxygen species and nitric oxide levels, enhanced phenol oxidase activity, and increased melanin deposition. These responses were associated with rapid wound closure (~ 1–1.5 h) compared to untreated controls (&gt; 6 h). Collectively, the findings demonstrate that the ZnO–phenolic bio-nanocomposite acts as a redox-modulating material that promotes host-mediated tissue repair, rather than functioning solely as an antimicrobial agent, highlighting its potential for advanced wound healing applications.</p></div>","PeriodicalId":618,"journal":{"name":"Journal of Cluster Science","volume":"37 6","pages":""},"PeriodicalIF":4.1,"publicationDate":"2026-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148927267","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"γ-Irradiation for Novel Hybrid Silver/Polyvinyl Alcohol Nanocomposite Films with New Functionalized Properties","authors":"A. Abdel-Galil,&nbsp;N. L. Moussa,&nbsp;H. E. Ali","doi":"10.1007/s10876-026-03097-w","DOIUrl":"10.1007/s10876-026-03097-w","url":null,"abstract":"<div><p>In this research, zero-valent silver nanoparticles (Ag⁰ NPs) in polyvinyl alcohol (PVA) polymeric matrix (Ag/PVA) nanocomposite films have been synthesized through the in-situ solution casting technique after reducing AgNO₃/PVA precursor solutions at different doses (10, 30, and 60 kGy) of γ-irradiation. The crystal structure of fresh PVA, 0.02Ag/PVA films, and γ-reduced Ag/PVA nanocomposite films with different molar ratios of AgNO₃ (0.005, 0.01, and 0.02 mol) has been checked by the X-ray diffraction technique. The formation and dispersion of γ-reduced Ag⁰ NPs in the PVA polymeric film with different molar ratios of AgNO₃ have been studied by the Fourier transformation infrared spectroscopy. The formation and average particle size of Ag⁰ NPs for 60 kGy-reduced 0.02Ag/PVA solution has been studied by the transmission electron microscope. The thermal stability of the γ-reduced Ag/PVA nanocomposite films has been assessed using thermogravimetric analysis. The spectral distribution of the optical absorbance, transmittance, and reflectance of fresh PVA and γ-reduced Ag/PVA nanocomposite films has been investigated. The optical band gaps (direct and indirect) of the studied films have been evaluated by the Tauc relation, where their values can be tuned by adjusting the molar ratios and γ-irradiation doses conforming the applicability of these films in optical applications. Also, the optical dispersion parameters and the effective charge-carrier concentration of the studied films have been determined. Furthermore, the frequency-dependent ac conductivity of the γ-reduced Ag/PVA nanocomposite films has been determined at room temperature for extended optoelectronic applications.</p></div>","PeriodicalId":618,"journal":{"name":"Journal of Cluster Science","volume":"37 6","pages":""},"PeriodicalIF":4.1,"publicationDate":"2026-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10876-026-03097-w.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148926821","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}