The Royal Society of Chemistry最新文献_第3页

Nanocage-based {SnEr2}-organic framework for high catalytic performance in cycloaddition of CO2 with epoxides and Knoevenagel condensation† 纳米基{SnEr2}有机骨架在CO2与环氧化物环加成和Knoevenagel缩合中的高催化性能

IF 3.9 3区化学

RSC Advances Pub Date : 2025-07-02 DOI: 10.1039/D5RA02661J

Xu Wang, BinBin Fan, Jing Chen, Jing Du and Dahai Pan

{"title":"Nanocage-based {SnEr2}-organic framework for high catalytic performance in cycloaddition of CO2 with epoxides and Knoevenagel condensation†","authors":"Xu Wang, BinBin Fan, Jing Chen, Jing Du and Dahai Pan","doi":"10.1039/D5RA02661J","DOIUrl":"https://doi.org/10.1039/D5RA02661J","url":null,"abstract":"The integration of abundant active sites and robust chemical stability in metal–organic frameworks (MOFs) is pivotal for advancing their industrial-scale utilization. This study proposes a novel strategy to construct cluster-based heterometallic MOFs by incorporating rare-earth ions. Through a solvothermal synthesis approach, we successfully engineered {[SnEr2(HBDCP)(H2O)]n·3DFM·5H2O}n (TYUT-13), a three-dimensional framework integrating Sn2+ (stannous(II) ions), Er3+ (erbium(III) ions) and designed flexible tetracarboxylic acid of 2,6-bis(2,4-dicarboxylphenyl)-4-(4-carboxylphenyl)pyridine (H5BDCP). This architecture features a unique pore environment characterized by high porosity and dual-functional active sites (Lewis acidic Sn/Er centers and basic pyridinic N atoms), which synergistically enhance catalytic performance. Experimental results demonstrate that TYUT-13a exhibits exceptional activity in the solvent-free cycloaddition of CO2 to epoxides under mild conditions (65 °C, 1 atm CO2, 4 h), achieving >98% conversion efficiency. Furthermore, it displays broad applicability in Knoevenagel condensations between phenoxyacetaldehyde and malononitrile, with yields exceeding 97%. These findings highlight the effectiveness of rare-earth ion hybridization in balancing structural integrity and catalytic multifunctionality, offering a blueprint for designing next-generation MOF catalysts for sustainable chemical processes.","PeriodicalId":102,"journal":{"name":"RSC Advances","volume":" 27","pages":" 21914-21921"},"PeriodicalIF":3.9,"publicationDate":"2025-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/ra/d5ra02661j?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144524456","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}

引用次数: 0

A simple colorimetric sensor based on a new deep eutectic solvent for the detection of chromium† 基于新型深共晶溶剂的简单比色传感器用于检测铬†

IF 3.9 3区化学

RSC Advances Pub Date : 2025-07-02 DOI: 10.1039/D5RA02492G

Thanaporn Seesuan, Nutthaya Butwong, Supalax Srijaranai and Siriboon Mukdasai

{"title":"A simple colorimetric sensor based on a new deep eutectic solvent for the detection of chromium†","authors":"Thanaporn Seesuan, Nutthaya Butwong, Supalax Srijaranai and Siriboon Mukdasai","doi":"10.1039/D5RA02492G","DOIUrl":"https://doi.org/10.1039/D5RA02492G","url":null,"abstract":"A selective and sensitive method was developed for the detection of Cr6+. This method was based on a combination of colorimetry and liquid–liquid extraction using a new deep eutectic solvent (DES). A DES/EDTA (ethylenediaminetetraacetic acid) colorimetric probe was prepared using tetrabutylammonium bromide (TBABr) as a hydrogen-bond acceptor, ascorbic acid (AA) as a hydrogen-bond donor, and EDTA as a chelating agent. Following the reduction of Cr6+ to Cr3+ by AA present in the DES/EDTA probe, a purple complex was formed with EDTA, which was immediately extracted into the DES phase. The enriched complex was subsequently quantified by performing absorbance measurements at 550 nm using an ultraviolet-visible spectrophotometer and a smartphone equipped with ImageJ software to detect the color intensity. Under the optimized conditions, the limit of detection was determined to be 0.056 μM (2.08 μg L−1) and the linear range was 0.5–100 μM with a correlation coefficient of 0.9962. In addition, the intra- and inter-day relative standard deviations were <6%. Notably, this simple and affordable colorimetric sensor was successfully employed in the detection of chromium in water and soil samples with satisfactory outcomes. The developed approach could therefore be highly useful for the determination of chromium in other environmental and biological samples.","PeriodicalId":102,"journal":{"name":"RSC Advances","volume":" 28","pages":" 22641-22648"},"PeriodicalIF":3.9,"publicationDate":"2025-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/ra/d5ra02492g?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144524469","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}

引用次数: 0

Improvement of N-benzoylation catalysis driven by an amyloid-substrate complex. 淀粉样蛋白-底物复合物驱动n -苯甲酰化催化的改进。

IF 2.9 3区化学

Organic & Biomolecular Chemistry Pub Date : 2025-07-02 DOI: 10.1039/d5ob00593k

Kai Yamamoto, Taka Sawazaki, Youhei Sohma

引用次数: 0

Recent advances in small-molecule fluorescent probes bearing a triaminoguanidinium unit and their sensing, bio-imaging and multifunctional applications. 三胺胍小分子荧光探针及其传感、生物成像和多功能应用研究进展。

IF 2.7 3区化学

Analytical Methods Pub Date : 2025-07-02 DOI: 10.1039/d5ay00771b

Balamurugan Tharmalingam

{"title":"Recent advances in small-molecule fluorescent probes bearing a triaminoguanidinium unit and their sensing, bio-imaging and multifunctional applications.","authors":"Balamurugan Tharmalingam","doi":"10.1039/d5ay00771b","DOIUrl":"https://doi.org/10.1039/d5ay00771b","url":null,"abstract":"Since their discovery, triaminoguanidinium-salicylidene-based Schiff bases have emerged as a significant class of compounds known for their solvent-dependent fluorescence emission, which varies depending on the substituents in their aromatic frameworks. These compounds are easy to synthesize, stable, cost-effective, and highly suitable for diverse applications, including chemosensing, biological studies, and multifunctional uses. This comprehensive review summarizes recent advancements in AIE-active triaminoguanidinium-salicylidene-based threefold symmetric Schiff molecules, particularly their role as chemosensors for detecting various analytes. It explores different chemosensing strategies for identifying metal ions (Zn2+, Cd2+, Cu2+, Fe3+, and Co2+) and anions (EDTA, I- PPi-, and S2-), focusing on the progress of triaminoguanidinium-salicylidene-based threefold symmetric Schiff bases over the past five years, particularly their systems for supramolecular host-guest interactions, AIEgen-ESIPT activity, COFs, bioimaging, etc. We hope this review provides a comprehensive overview of the current research landscape and encourages further exploration of novel triaminoguanidinium-salicylidene-based threefold symmetric Schiff base compounds with expanded applications.","PeriodicalId":64,"journal":{"name":"Analytical Methods","volume":" ","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144537484","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

Effects of iron oxide-modified hierarchically porous 4A zeolites on flame retardancy of ammonium polyphosphate-treated wood composites 氧化铁改性分级多孔4A沸石对聚磷酸铵处理木材复合材料阻燃性能的影响

IF 3.9 3区化学

RSC Advances Pub Date : 2025-07-02 DOI: 10.1039/D5RA03148F

Shaodi Zhang, Mingzhi Wang, Yuxiang Huang, Yahui Zhang and Wenji Yu

{"title":"Effects of iron oxide-modified hierarchically porous 4A zeolites on flame retardancy of ammonium polyphosphate-treated wood composites","authors":"Shaodi Zhang, Mingzhi Wang, Yuxiang Huang, Yahui Zhang and Wenji Yu","doi":"10.1039/D5RA03148F","DOIUrl":"https://doi.org/10.1039/D5RA03148F","url":null,"abstract":"The combination of inorganic porous nanomaterials with metal oxides has shown great prospects as flame retardants or flame-retardant synergists in wood composites. In this work, iron oxide-modified hierarchically porous 4A (FeH4A) zeolites were prepared and applied as synergists of ammonium polyphosphate (APP) for flame retardant treatment of wood composites. The effects of FeH4A zeolites with various degrees of modification (0.5FeH4A, 1FeH4A, 5FeH4A, and 10FeH4A) on flame retardancy of wood composites were investigated. With proper modification, the 0.5FeH4A zeolite favored the decomposition process of APP at low temperatures, leading to better flame retardancy. The peak heat release rate (HRR) and total heat release (THR) of W-APP-0.5 FeH4A were decreased by 15.8% and 16.7%, respectively, compared with those of W-APP-H4A. However, severe modification results in damage of the zeolite framework. This change along with the excess iron oxide weaken the thermal stability of the char residue, which negatively affects flame retardancy. Further investigation of the pyrolysis products and morphologies of the char residue indicates that the FeH4A zeolites play a role in both gaseous and condensed phase flame-retardant mechanisms. This study provides information for the development of novel flame retardants and effective synergists for wood composites.","PeriodicalId":102,"journal":{"name":"RSC Advances","volume":" 28","pages":" 22565-22575"},"PeriodicalIF":3.9,"publicationDate":"2025-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/ra/d5ra03148f?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144524465","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}

引用次数: 0

Terrestrial hermit crab with electronic payloads for opportunistic roaming environmental sensing† 陆地寄居蟹与电子有效载荷的机会漫游环境传感†

IF 3.9 3区化学

RSC Advances Pub Date : 2025-07-02 DOI: 10.1039/D5RA03509K

Brian Minsoo Lee, Holden King Ho Li, Ahjeong Son and Beelee Chua

{"title":"Terrestrial hermit crab with electronic payloads for opportunistic roaming environmental sensing†","authors":"Brian Minsoo Lee, Holden King Ho Li, Ahjeong Son and Beelee Chua","doi":"10.1039/D5RA03509K","DOIUrl":"https://doi.org/10.1039/D5RA03509K","url":null,"abstract":"We demonstrated the free roaming of a terrestrial hermit crab (Coenobita spp.) with a detachable harness accompanied by different payloads of sensors and electronics. The payloads tested are as follows: (i) an LED circuit with a switch, (ii) a solar-powered temperature and relative humidity sensor with wireless live data transmission, and (iii) a salt water sensing module for salt water detection. The acquired migratory data demonstrated that the hermit crab was able to map out the boundary between salt water and dry land in an arena, suggesting its applicability in monitoring coastal salt water ingress. Unlike conventional animal tagging, the harness conforms to the turbinate pattern of shells via twisting motion, and the hermit crab can jettison the harness and payload at will by changing shells. This study explores the possibility of having hermit crabs as partners to pick up and randomly deploy sensors for opportunistic data acquisition without human intervention. They could function as a self-sustained roaming platform for detachable electronics.","PeriodicalId":102,"journal":{"name":"RSC Advances","volume":" 28","pages":" 22716-22729"},"PeriodicalIF":3.9,"publicationDate":"2025-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/ra/d5ra03509k?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144536761","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}

引用次数: 0

Rust and Redemption: Iron-Sulfur Clusters and Oxygen in Human Disease and Health. 铁锈与救赎：人类疾病与健康中的铁-硫簇和氧。

IF 2.9 3区生物学

Metallomics Pub Date : 2025-07-02 DOI: 10.1093/mtomcs/mfaf022

Shany Egozi, Tslil Ast

引用次数: 0

Production of subtilosin A in E. coli: insights into the head-to-tail macrocyclization. 大肠杆菌中subtilosin A的产生：对首尾大环化的洞察。

IF 2.9 3区化学

Organic & Biomolecular Chemistry Pub Date : 2025-07-02 DOI: 10.1039/d4ob01816h

Yifei Jia, Yuanjun Han, Wenning Wang, Qi Zhang

引用次数: 0

Deep learning-enhanced development of innovative antioxidant liposomal drug delivery systems from natural herbs. 深度学习增强天然草药创新抗氧化脂质体给药系统的开发。

IF 12.2 2区材料科学

Materials Horizons Pub Date : 2025-07-02 DOI: 10.1039/d5mh00699f

Xiaohe Zhang, Zhihang Zheng, Lina Xie, Minghao Yang, Jing Wang, Weiwei Wang, Shuyan Han, Zhen Zhang, Jun Wu

{"title":"Deep learning-enhanced development of innovative antioxidant liposomal drug delivery systems from natural herbs.","authors":"Xiaohe Zhang, Zhihang Zheng, Lina Xie, Minghao Yang, Jing Wang, Weiwei Wang, Shuyan Han, Zhen Zhang, Jun Wu","doi":"10.1039/d5mh00699f","DOIUrl":"https://doi.org/10.1039/d5mh00699f","url":null,"abstract":"Free radical-mediated oxidative damage to biological macromolecules, such as DNA and proteins, significantly contributes to cellular ageing. Antioxidants play a crucial role in mitigating this process by neutralizing reactive oxygen species (ROS) and reducing DNA damage. Traditional herbal medicines are of strong interest as potential sources of antioxidants due to their rich diversity of bioactive components. In this study, we developed a two-stage BERT-based framework trained on 587 experimentally confirmed antioxidants and 983 inactive compounds. The optimized model effectively screened a broad range of potential antioxidant compounds from a library of 2882 natural herbal compounds, achieving an accuracy improvement of approximately 20% over traditional machine learning models. Molecular docking simulations and in vitro experiments consistently validated the antioxidant capacity of the selected compounds. Additionally, incorporating three representative compounds into a liposomal delivery system not only enhanced in vivo bioavailability, but also mitigated oxidative stress injury after kidney acute ischemia/reperfusion. This was achieved by up-regulating antioxidant-related genes in target organs as well as ROS scavenging. Our findings highlight the potential of integrating deep learning-based compound screening with an engineered liposomal delivery platform in the research of oxidative stress and aging.","PeriodicalId":87,"journal":{"name":"Materials Horizons","volume":" ","pages":""},"PeriodicalIF":12.2,"publicationDate":"2025-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144537502","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Hydrogel-based thermoelectrochemical cells for waste heat recovery under passive cooling conditions. 用于被动冷却条件下余热回收的水凝胶基热电化学电池。

IF 12.2 2区材料科学

Materials Horizons Pub Date : 2025-07-02 DOI: 10.1039/d5mh00771b

Matteo Bevione, Gopal Narmada Naidu, Giulia Tagliabue

{"title":"Hydrogel-based thermoelectrochemical cells for waste heat recovery under passive cooling conditions.","authors":"Matteo Bevione, Gopal Narmada Naidu, Giulia Tagliabue","doi":"10.1039/d5mh00771b","DOIUrl":"https://doi.org/10.1039/d5mh00771b","url":null,"abstract":"With global energy demands rising and the need to reduce greenhouse gas emissions, capturing low-temperature waste heat, which represents ≈ 60% of overall energy waste, offers a compelling pathway to sustainability. Thermoelectrochemical cells (TECs) are promising for converting low-grade heat into electricity but face limitations with liquid electrolytes, including inefficiency and instability under passive cooling. In this work, we introduce hydrogel-based TECs (HyTECs) as a solution to these challenges, leveraging their low thermal conductivity and permeability to sustain larger thermal gradients and stable operation across diverse conditions. We demonstrate that HyTECs achieve a power output of up to 3.5 μW cm-2 under passive cooling with a hot temperature of 55-65 °C, comparable to those of state-of-the-art TECs under an externally applied thermal gradient of 10 K cm-1. Through thorough experiments and multiphysics modeling, we attribute this performance to the hydrogel's ability to support stable convective cells that enhance redox species transport at the electrode interface. Systematic optimization of key parameters, including redox-pair concentration, electrode separation, and supporting electrolyte levels, revealed that a design with 20 mm electrode spacing, 0.4 M ferro-/ferricyanide, and 0.5 M KCl achieves a power output of 35 mW m-2, a Seebeck coefficient of 3.5 mV K-1, and a normalized power of 0.6 mW m-2 K-2. Furthermore, HyTECs exhibit robust performance across orientations (0°-150°) around hot pipes, with a 135° inclination delivering peak power due to enhanced convection and thermal gradients. This work establishes HyTECs as a viable platform for efficient waste heat recovery, providing a foundation for their deployment in real-world energy applications.","PeriodicalId":87,"journal":{"name":"Materials Horizons","volume":" ","pages":""},"PeriodicalIF":12.2,"publicationDate":"2025-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144537505","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0