The Royal Society of Chemistry最新文献

{"title":"Effect of the in situ synthesis of vanadium oxide nanowires on the electrical properties of hybrid nanocomposites based on synthetic carbon matrices","authors":"H. Jeidi, W. Ahmed, I. Najeh, M. Erouel, H. L. Gomes, M. Chelly, G. Neri and L. El Mir","doi":"10.1039/D4RA07931K","DOIUrl":"https://doi.org/10.1039/D4RA07931K","url":null,"abstract":"<p >Organic–inorganic nanocomposites (RF/VOX) were prepared by sol–gel method coupled with pyrolysis treatment using a resorcinol–formaldehyde carbon matrix enriched with vanadium nanoparticles. The structural properties of the final product were characterised using X-ray diffraction, revealing the transformation of the incorporated vanadium oxide from the V<small>₂</small>O<small>₅</small> phase to V<small>₂</small>O<small>₃</small> due to the pyrolysis temperature in a reductive atmosphere, alongside the formation of vanadium carbide (V<small>₈</small>C<small>₇</small>) in the sample treated at 1000 °C. The X-ray analysis also indicated the presence of a graphite phase across all samples. Microscopic examinations showed macroporous carbon structures enriched with vanadium oxide in the form of nanowires. These structural features significantly influenced the materials' electrical properties. At low frequencies, the AC conductance indicated a thermally activated process in the RF/VOX-625 and RF/VOX-650 samples pyrolysed <em>y</em> at 625 °C and 650 °C, respectively. RF/VOX-625 displayed semiconductor behaviour at high frequencies, while RF/VOX-650 transited from semiconductor behaviour to metal one at 200 K. The changes in the exponent <em>s</em> suggested that the CBH model effectively describes the AC conduction mechanism. Impedance analysis highlighted a relaxation phenomenon, and Nyquist plots illustrated the contribution of grain and grain boundaries in RF/VOX-625 and RF/VOX-650 at low temperatures. Furthermore, these plots indicated that in RF/VOX-650, the grain effect became predominant beyond 200 K. Incorporating vanadium oxide nanoparticles into the polymer matrix resulted in distinct physical properties and behaviours compared to the original organic matrix, allowing this material to be tested in various applications including negatronic devices and electronic components.</p>","PeriodicalId":102,"journal":{"name":"RSC Advances","volume":" 13","pages":" 10022-10036"},"PeriodicalIF":3.9,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/ra/d4ra07931k?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143740478","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":"Advances in mercury ion sensing using BODIPY-based compounds: a sexennial update","authors":"Supriya Routray, Subhadeep Acharya, Laxmipriya Nayak, Simran Pattnaik and Rashmirekha Satapathy","doi":"10.1039/D5RA01232E","DOIUrl":"https://doi.org/10.1039/D5RA01232E","url":null,"abstract":"<p >Pollution from mercury ions (Hg<small>²⁺</small>) continues to pose a significant threat to the environment and public health because of its extreme toxicity and bioaccumulative nature. BODIPY-based compounds are emerging as strong candidates for creating selective and sensitive chemosensors for mercury ion detection. Their structural tunability facilitates the introduction of various functional groups, improving their binding affinity and specificity toward mercury ions. This review elucidates various sensing mechanisms and provides comprehensive insights into the performance of these sensors, particularly with regard to selectivity, sensitivity, and detection limits. The synthetic routes for synthesizing the chemosensors are mentioned in detail. Given their reliability and flexibility, BODIPY-based sensors are poised to make significant contributions in the fields of both sensors and analytical chemistry.</p>","PeriodicalId":102,"journal":{"name":"RSC Advances","volume":" 13","pages":" 9910-9951"},"PeriodicalIF":3.9,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/ra/d5ra01232e?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143740567","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 turn-off fluorescent chemical sensor based on a thiazole-Schiff base structure for highly selective and accurate detection of Cu²⁺ in living cells.","authors":"Qian Sun, Lu Ren, Jing Liu, Zhaoyun Yang, Dawei Zhang, Shuangbao Li","doi":"10.1039/d5ay00243e","DOIUrl":"https://doi.org/10.1039/d5ay00243e","url":null,"abstract":"<p><p>A Schiff base fluorescent probe, HTT, based on a sulfonylhydrazone structure was designed and synthesized for the sensitive and selective detection of Cu²⁺. The probe HTT exhibits good anti-interference performance toward Cu²⁺ in the presence of a variety of metal ions. After the addition of Cu²⁺, it can quickly respond within 40 seconds, and the fluorescence detection limit is 1.10 nM. The coordination ratio of probe HTT and Cu²⁺ is 2 : 1, and the coordination reaction between CN, SO and Cu²⁺ limits the formation of hydrogen bonds between the hydroxyl group and CN, disrupting the spatial coplanar effect of the probe molecule and thereby inducing fluorescence quenching. The probes can be recovered and reused using EDTA for the detection of Cu²⁺. The probe was also applied to the successful monitoring of Cu²⁺ in living cells and real water samples.</p>","PeriodicalId":64,"journal":{"name":"Analytical Methods","volume":" ","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143750088","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 simulation method for highly entangled polymer nanocomposites: scaling exponents of slip-spring age among free and grafted chains, grafting density and nanoparticle/polymer interaction dependence on particle dispersion.","authors":"Semen Vasin, Gaetan Maurel, Taiji Mikami, Corentin Hermange, Iurii Chubak, Robert J Tannenbaum, Sarah C Seeger, Catherine Gauthier, Marc Couty","doi":"10.1039/d4sm01167h","DOIUrl":"https://doi.org/10.1039/d4sm01167h","url":null,"abstract":"<p><p>We present an extension of the SLIPLINK technology introduced by A. Likhtman to polymer nanocomposites in order to model explicitly free and grafted chains. Entanglements are explicitly modeled by slip-springs (SS) and follow the constraint release algorithm of destruction/recreation when reaching the chain end. Following the birth/death process, one can compute the age of slip-springs and the entire population age pyramid. We varied nanoparticle volume fraction, grafting density, and polymer/particle interactions to determine structural and dynamic properties of the nanocomposite materials. Scaling laws for slip-springs average age <i>versus</i> chain length have been obtained. While the dynamics of slip-springs between free chains in the nanocomposite is almost identical to that of a pure polymer melt, a characteristic exponent close to 3.7 has emerged governing the average age of slip-springs between grafted chains. The number of inter-particle graft-graft entanglements and their increased average lifetimes have a strong impact on the viscoelastic response of the material and the nanoparticle cluster formation. The emergence of polymer network elasticity will be discussed for high grafting density and high-volume fraction.</p>","PeriodicalId":103,"journal":{"name":"Soft Matter","volume":" ","pages":""},"PeriodicalIF":2.9,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143750384","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":"Yb-Doped CuY modulates Cu electronic structures for efficient oxidation of anisole to guaiacol†","authors":"Hanghang Zhang and Gang Xu","doi":"10.1039/D5RA00463B","DOIUrl":"https://doi.org/10.1039/D5RA00463B","url":null,"abstract":"<p >Copper-based catalysts are widely employed in the catalytic conversion of aromatic compounds to phenolic derivatives. However, single-atom copper catalysts often exhibit limited reactivity and stability. In this study, we addressed these limitations by loading Cu onto NaY zeolite <em>via</em> ion exchange to synthesize a CuY catalyst, followed by Yb modification. By optimizing the Yb content, we significantly enhanced the anisole conversion rate and guaiacol yield. Catalyst characterization revealed that Yb species modulate the electronic structure of copper, favoring the formation of abundant Cu<small>⁺</small> species. This electronic modification promotes the catalytic generation of hydroxyl radicals (˙OH) from hydrogen peroxide, thereby accelerating the reaction kinetics. Furthermore, Yb incorporation into CuY induced the formation of oxygen vacancies, which improved hydroxyl radical adsorption and facilitated the generation of metal-oxo species. These synergistic effects collectively increased the reaction's overall conversion efficiency. Under optimized reaction conditions, the Yb/CuY catalyst achieved an anisole conversion of 56.2% and an <em>ortho</em>-selectivity of 74.6%, clearly outperforming previous reports.</p>","PeriodicalId":102,"journal":{"name":"RSC Advances","volume":" 13","pages":" 9899-9909"},"PeriodicalIF":3.9,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/ra/d5ra00463b?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143740566","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":"Ti3C2/CuWO4/Pt nanozyme: photothermal-enhanced chemodynamic antibacterial effects induced by NIR†","authors":"Simin Yuan, Lianyuan Ge, Yi Li, Xiaohong Wang, Zhongyuan Liu, Yang Cao and Linglin Yang","doi":"10.1039/D4RA08791G","DOIUrl":"https://doi.org/10.1039/D4RA08791G","url":null,"abstract":"<p >With the growing issue of antibiotic resistance, it has become increasingly crucial to develop highly efficient antimicrobial materials. While the single-component nanozyme systems exhibited some catalytic activity, their efficiency remains suboptimal. This study presents a Ti<small>₃</small>C<small>₂</small>/CuWO<small>₄</small>/Pt hybrid nanozyme composed of photothermal agents and nanozymes, which leverages the photothermal effect to enhance nanozyme activity and achieve efficient antimicrobial effects. The composite material exhibited peroxidase (POD)-like catalytic activity, effectively converting hydrogen peroxide (H<small>₂</small>O<small>₂</small>) into hydroxyl radicals (·OH). Meanwhile, the Ti<small>₃</small>C<small>₂</small>/CuWO<small>₄</small>/Pt material demonstrated high photothermal conversion ability, which not only promoted the generation of ·OH under near-infrared (NIR) light irradiation, but also facilitated copper (Cu<small>²⁺</small>) ions release from the CuWO<small>₄</small> nanozyme, thereby further augmenting its catalytic activity. After 4 to 5 min of light irradiation, the Ti<small>₃</small>C<small>₂</small>/CuWO<small>₄</small>/Pt nanozyme exhibited significant antimicrobial performance against both <em>Escherichia coli</em> (<em>E. coli</em>) and <em>Staphylococcus aureus</em> (<em>S. aureus</em>). In summary, this work presents a Ti<small>₃</small>C<small>₂</small>/CuWO<small>₄</small>/Pt nanoplatform that utilizes the photothermal effect to enhance the chemodynamic antimicrobial activity, showcasing its potential applications in antibiotic-free antimicrobial fields.</p>","PeriodicalId":102,"journal":{"name":"RSC Advances","volume":" 13","pages":" 9985-9996"},"PeriodicalIF":3.9,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/ra/d4ra08791g?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143740603","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":"Cu-doped and 2-propylimidazole-modified nanoceria (CeO2@Cu-PrIm) oxidase-like nanozyme for total antioxidant capacity assay of fruits†","authors":"Zhendong Fu, Jiahe Qiu, Ping Gong, Danhong Zhang and Liping Wang","doi":"10.1039/D4RA07858F","DOIUrl":"https://doi.org/10.1039/D4RA07858F","url":null,"abstract":"<p >The precise and sensitive quantification of total antioxidant capacity (TAC) is indispensable for evaluating the quality of foods rich in antioxidants. In this investigation, a novel nanozyme exhibiting robust oxidase activity was synthesized <em>via</em> a sonochemical doping process utilizing copper ions and the modification of 2-propylimidazole onto nanoceria. Subsequently, a CeO2@Cu-PrIm/ox-TMB assay system was successfully formulated, furnishing a practical and highly sensitive analytical tool for TAC determination. The colorimetric sensor exhibited a linear response over a concentration range of 1 μM to 70 μM, accompanied by a limit of detection (LOD) of 1.26 μM under meticulously screened conditions. This assay displayed substantial practical utility for TAC analysis in fruits, attributed to its exceptional accuracy and selectivity. This research endeavor may offer a novel direction for the design of nanozymes and colorimetric biosensors possessing heightened oxidase activity, thereby advancing the field of analytical chemistry and food science.</p>","PeriodicalId":102,"journal":{"name":"RSC Advances","volume":" 13","pages":" 9997-10004"},"PeriodicalIF":3.9,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/ra/d4ra07858f?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143740604","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":"OligoA-tailed DNA for dense functionalization of gold nanoparticles and nanorods in minutes without thiol-modification: unlocking cross-disciplinary applications.","authors":"Feng Liu, Guoqing Wang","doi":"10.1039/d5bm00022j","DOIUrl":"https://doi.org/10.1039/d5bm00022j","url":null,"abstract":"<p><p>DNA-functionalized gold nanoparticles (DNA-AuNPs) and nanorods (DNA-AuNRs) have emerged as key yet versatile biomaterials for applications in biosensing, diagnostics and programmable assembly. The high cost and sometimes complex procedures of functionalization of DNA onto AuNPs and AuNRs <i>via</i> the Au-thiol interaction may have set a threshold for its expanded application by researchers of diverse fields. Although oligoA-tailed DNA has been introduced as an alternative to thiolated DNA, its extended use has been largely confined to spherical nanoparticles with suboptimal functionalization density. Here we show a rapid and efficient method for high-density functionalization of both AuNPs and AuNRs using oligoA-tailed DNA <i>via</i> butanol dehydration, with the length of oligoA as short as A₂. By preventing secondary structure formation at an elevated temperature, our results demonstrate significantly enhanced DNA adsorption, further allowing for functionalization of a random sequence onto the AuNPs. This yields stable DNA-nanoparticle conjugates with superior stability and durability, suitable for <i>in situ</i> naked-eye loop-mediated isothermal amplification (LAMP) assay of bacterial pathogens and stimuli-responsive self-assembly. This study overcomes long-standing barriers in rapid, simple and low-cost preparation of DNA-AuNPs and DNA-AuNRs, paving the way for cross-disciplinary applications in diverse fields that were previously siloed and beyond.</p>","PeriodicalId":65,"journal":{"name":"Biomaterials Science","volume":" ","pages":""},"PeriodicalIF":5.8,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143750207","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Stable dispersion and prolonged dissolution of hydrophilic pharmaceutical achieved by room-temperature atmospheric pressure atomic layer deposition.","authors":"Viet Phuong Cao, Kim-Hue Thi Dinh, Truong Duc Dinh, Phi Huu Bui, Tuan Hiep Tran, Hao Van Bui","doi":"10.1039/d4cc06707j","DOIUrl":"https://doi.org/10.1039/d4cc06707j","url":null,"abstract":"<p><p>We demonstrate atomic layer deposition of SiO₂ films on hydrophilic diclofenac sodium pharmaceutical powder under ambient conditions. We reveal that the SiO₂ layer not only prolongs the dissolution but also enhances the surface zeta potential of the coated products, preventing sedimentation and enabling a highly stable dispersion in water.</p>","PeriodicalId":67,"journal":{"name":"Chemical Communications","volume":" ","pages":""},"PeriodicalIF":4.3,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143750288","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Direct detection of lymphoma cancer cells based on impedimetric immunosensors","authors":"Asghar Barani Beiranvand, Fariba Tadayon and Hasan Bagheri","doi":"10.1039/D4RA07801B","DOIUrl":"https://doi.org/10.1039/D4RA07801B","url":null,"abstract":"<p >This study focuses on the creation and application of an advanced impedimetric immunosensor designed for the sensitive detection of lymphoma cancer cells. The sensor was developed by modifying a glassy carbon electrode (GCE) with gold nanoparticles (AuNPs) and 3,3′-dithiodipropionic acid di(<em>N</em>-hydroxysuccinimide ester) boronic acid (AuNPs@DTSP–BA), followed by the attachment of rituximab monoclonal antibody. Incorporating the boronic acid (BA) component enabled effective oriented immobilization of the antibody, thereby improving the performance of the biosensor. Various spectroscopic techniques were used to characterize the immunosensor. The developed immunosensor demonstrated the ability to detect lymphoma cancer cells across a wide linear range of 100 to 50 000 cells per mL, with a detection sensitivity of 64 cells per mL.</p>","PeriodicalId":102,"journal":{"name":"RSC Advances","volume":" 13","pages":" 9884-9890"},"PeriodicalIF":3.9,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/ra/d4ra07801b?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143740564","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}