The Royal Society of Chemistry最新文献

{"title":"A 2,6-diamidopyridine-based macrocyclic aromatic amide receptor with cascade ion pair recognition†","authors":"Xinguo Mao, Rui Zhang, Yulong Sun, Xuping Wang, Qinggang Li, Han Zuilhof, Leyong Wang and Qiang Shi","doi":"10.1039/D5RA00434A","DOIUrl":"https://doi.org/10.1039/D5RA00434A","url":null,"abstract":"<p >Ion-pair receptors constitute an important class of synthetic receptors within the realm of host–guest and supramolecular chemistry. Their unique ability to simultaneously recognize and accommodate both cations and anions has rendered them invaluable across various applications. In this study, we have synthesized a cascade macrocyclic ion-pair receptor, composed of three 2,6-amidopyridine building blocks bridged by aromatic spacers. Notably, the diamide binding sites of this receptor exhibit a high degree of selectivity for fluoride ions. Furthermore, despite lacking any dedicated cation-binding sites within its macrocyclic structure, this receptor is capable of selectively binding tetraethylammonium cations through a series of cascade electrostatic interactions facilitated by the bound flouride ions.</p>","PeriodicalId":102,"journal":{"name":"RSC Advances","volume":" 8","pages":" 5850-5855"},"PeriodicalIF":3.9,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/ra/d5ra00434a?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143455428","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":"Spectral and dynamical properties of multiexcitons in semiconductor nanorods.","authors":"Krishan Kumar, Maria Wächtler","doi":"10.1039/d4nr04692g","DOIUrl":"https://doi.org/10.1039/d4nr04692g","url":null,"abstract":"<p><p>Multiple exciton dynamics in semiconductor nanocrystals is usually characterized by the observation of changes in the fast multiexponential kinetics at the band edge transition position in transient absorption spectroscopy at varying excitation intensities. However, analysis of this complex decay dynamics is not straightforward and complicated by varying initial distributions of multiple excitons of increasing order with increasing excitation intensity and the superposition of contributions from multiexciton processes and charge carrier trapping, which need to be distinguished. In this study, we not only analyse kinetics but also transient absorption spectra to identify characteristic spectroscopic signatures for the presence of multiple excitons of varying orders beyond biexcitons in seeded and non-seeded CdS nanorods. Applying an MCMC (Markov Chain Monte Carlo) sampling approach for global target analysis enables us to determine the contributions of multiple exciton decay <i>via</i> Auger recombination and the contribution of a potential population of surface exciton states to the observed decay dynamics.</p>","PeriodicalId":92,"journal":{"name":"Nanoscale","volume":" ","pages":""},"PeriodicalIF":5.8,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143456324","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Correction: D-A-D organic fluorescent probes for NIR-II fluorescence imaging and efficient photothermal therapy of breast cancer.","authors":"Jie Gao, Lin Yuan, Yu Min, Bing Yu, Hailin Cong, Youqing Shen","doi":"10.1039/d5bm90017d","DOIUrl":"https://doi.org/10.1039/d5bm90017d","url":null,"abstract":"<p><p>Correction for 'D-A-D organic fluorescent probes for NIR-II fluorescence imaging and efficient photothermal therapy of breast cancer' by Jie Gao <i>et al.</i>, <i>Biomater. Sci.</i>, 2024, <b>12</b>, 1320-1331, https://doi.org/10.1039/D3BM01604H.</p>","PeriodicalId":65,"journal":{"name":"Biomaterials Science","volume":" ","pages":""},"PeriodicalIF":5.8,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143456219","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":"C-2 fluorinated castanospermines as potent and specific α-glucosidase inhibitors: synthesis and structure-activity relationship study.","authors":"Yi-Xian Li, Ming Zhang, Yuna Shimadate, Atsushi Kato, Jun-Zhe Wang, Yue-Mei Jia, George W J Fleet, Chu-Yi Yu","doi":"10.1039/d4ob01542h","DOIUrl":"https://doi.org/10.1039/d4ob01542h","url":null,"abstract":"<p><p>C-2 Fluorinated castanospermines have been synthesized from a well-protected aldehyde precursor and evaluated as glycosidase inhibitors in comparison with castanospermine, 1-<i>epi</i>-castanospermine and C-1 fluorinated castanospermines. While C-1 fluorinated castanospermines lose nearly all the glycosidase inhibition shown by castanospermine and 1-<i>epi</i>-castanospermine, C-2 fluorinated derivatives of castanospermine were found to be potent and highly specific α-glucosidase inhibitors; however, the C-2 fluorinated 1-<i>epi</i>-castanospermines showed a sharp decrease in inhibition towards all tested enzymes. Docking calculations attributed the sharp decrease of glycosidase inhibition of C-1 fluorinated castanospermines to the disappearance of hydrogen bonds between the original C-1 hydroxyls and residues Arg-526 and Asp-327. The retained potent and specific α-glucosidase inhibition of C-2 fluorinated castanospermines was achieved by the fluorine-induced reestablishment of the docking mode in the active site; and the sharply decreased inhibition of C-2 fluorinated 1-<i>epi</i>-castanospermines can be attributed to obvious binding distorsion and disappearance of the hydrogen bonding with residues His-600 and Arg-526. Reliability of the docking results was evaluated by Molecular Dynamics (MD) simulation, which provided necessary calibrations to the calculation results. The interaction modes of fluorine reported herein are different from the \"mimic effect\" of fluorine for hydrogen, offering insights and extending our previous work on fluorinated casuarines. These results would be important for the development of castanospermine-related drug candidates for the treatment of diabetes, viral infections and Pompe disease.</p>","PeriodicalId":96,"journal":{"name":"Organic & Biomolecular Chemistry","volume":" ","pages":""},"PeriodicalIF":2.9,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143456423","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":"Newly predicted halide perovskites Mg3AB3 (A = N, Bi; B = F, Br, I) for next-generation photovoltaic applications: a first-principles study","authors":"Mayeen Uddin Khandaker, Hamid Osman, Shams A. M. Issa, M. M. Uddin, Md. Habib Ullah, Hajir Wahbi and M. Y. Hanfi","doi":"10.1039/D4RA09093D","DOIUrl":"https://doi.org/10.1039/D4RA09093D","url":null,"abstract":"<p >The research examines the exceptional physical characteristics of Mg<small>₃</small>AB<small>₃</small> (A = N, Bi; B = F, Br, I) perovskite compounds through density functional theory to assess their feasibility for photovoltaic applications. Mechanical characterization further supports their stability where out of all the compounds, Mg<small>₃</small>BiI<small>₃</small> demonstrates high ductility, while Mg<small>₃</small>NF<small>₃</small> and Mg<small>₃</small>BiBr<small>₃</small> possess a brittle nature. The calculated elastic constants and anisotropy factors also substantiate their mechanical stability, while there is an observed declining trend in Debye temperature with increase in atomic number. From the electronic point of view, Mg<small>₃</small>NF<small>₃</small> can be considered as a wide-bandgap insulator with the bandgap of 6.789 eV, whereas Mg<small>₃</small>BiBr<small>₃</small> and Mg<small>₃</small>BiI<small>₃</small> can be classified as semiconductors suitable for photovoltaic applications bandgaps of 1.626 eV and 0.867 eV, respectively. The optical characteristics of such materials are excellent and pronounced by high absorption coefficients, low reflectivity, and good dielectrics, which are very important in the collection of solar energy. Among them, Mg<small>₃</small>BiBr<small>₃</small> and Mg<small>₃</small>BiI<small>₃</small> possess high light absorption coefficient, moderate reflectivity, and good electrical conductivity, indicating that they are quite suitable for applying the photoelectric conversion materials for solar cells. In addition, thermal analysis shows that Mg<small>₃</small>NF<small>₃</small> is a good heat sink material, Mg<small>₃</small>BiBr<small>₃</small> and Mg<small>₃</small>BiI<small>₃</small> are favorable for thermal barrier coating materials. Due to their high absorption coefficients, low reflectance and suitable conductivity, both Mg<small>₃</small>BiBr<small>₃</small> and Mg<small>₃</small>BiI<small>₃</small> could be regarded as the most appropriate materials for the creation of the next generation of photovoltaic converters.</p>","PeriodicalId":102,"journal":{"name":"RSC Advances","volume":" 8","pages":" 5766-5780"},"PeriodicalIF":3.9,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/ra/d4ra09093d?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143446401","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":"Composite metamaterial of hyperbolic nanoridges and gold nanoparticles for biosensing.","authors":"Xinzhao Yue, Tao Wang, Yaohua Cai, Huimin Wang, Enze Lv, Xuyang Yuan, Jinwei Zeng, Wenyu Zhao, Jian Wang","doi":"10.1039/d4nr05517a","DOIUrl":"https://doi.org/10.1039/d4nr05517a","url":null,"abstract":"<p><p>Hyperbolic metamaterials have gained considerable attention in the field of optical biosensing due to their ability to support highly sensitive plasmonic modes. The high sensitivity of these electromagnetic modes mainly manifests as a strong response to variations in the bulk refractive index of the surrounding environment. However, its capability to detect low-concentration biochemical molecules near the surface of the metamaterial still requires further enhancement. In this work, we developed a composite metamaterial of gold nanoparticles and nanoridge hyperbolic metamaterials. The hyperbolic nanoridges are high-periodicity metamaterial arrays fabricated by combining electron beam lithography and electroplating. By exciting the high-sensitivity coupling modes formed by the bulk plasmon-polariton and localized surface plasmon resonance in this composite metamaterial, we achieved an improvement of over one order of magnitude in the detection limit for biomolecules, while maintaining the high bulk sensitivity of 23 333 nm RIU^-1. Our research not only plays a key role in advancing the field of real-time, high-precision plasmonic biosensing but also offers substantial promise for improving early disease detection and monitoring.</p>","PeriodicalId":92,"journal":{"name":"Nanoscale","volume":" ","pages":""},"PeriodicalIF":5.8,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143456317","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Hydrogen-bond disruption in molecularly engineered Janus evaporators for enhanced solar desalination.","authors":"Jie Zhu, Dong Wu, Xiayun Huang, Daoyong Chen, Zhihong Nie","doi":"10.1039/d4sm01484g","DOIUrl":"https://doi.org/10.1039/d4sm01484g","url":null,"abstract":"<p><p>Hydrogels have emerged as effective evaporator platforms, significantly enhancing evaporation rates by disrupting water's hydrogen bond network. Here, we present an advanced strategy to improve hydrogel evaporation performance by tailoring alkyl hydrophobic groups within biparental polyelectrolyte-shell micelles grafted onto the polyvinyl alcohol (PVA) hydrogel surface. Poly(2-(diethylamino)ethyl methacrylate) (PDEAEMA) quaternized with methyl iodide (MeI) or ethyl iodide (EtI) formed the biparental polyelectrolyte shell, while poly(benzyl methacrylate) (PBzMA) constituted the micelle core, creating BE-MeI and BE-EtI micelles, respectively. The molecularly engineered BE-MeI micelles exhibited an optimized configuration of quaternary amines linked to hydrophobic groups, achieving a synergistic balance between water attraction <i>via</i> electrostatic interactions and water repulsion <i>via</i> steric hindrance. This configuration effectively disrupted the water's hydrogen bond network, lowering the water evaporation enthalpy to 1434 J g^-1. The BE-MeI micelle-grafted PVA hydrogel achieved a record-breaking evaporation rate of 4.1 kg m^-2 h^-1 under 1 sun irradiation, surpassing prior benchmarks, including our previously reported poly(4-vinyl pyridine) quaternized by a MeI system. Additionally, the grafted micelle layer exhibited a salt rejection ratio of 99.62%, ensuring excellent desalination performance. The biparental polyelectrolyte-shell micelle grafting strategy is broadly applicable across diverse hydrogel systems, representing a significant advancement in solar-driven desalination technology.</p>","PeriodicalId":103,"journal":{"name":"Soft Matter","volume":" ","pages":""},"PeriodicalIF":2.9,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143456489","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 high-power lithium-sulfur battery combining a catholyte and a composite cathode.","authors":"Edoardo Barcaro, Jusef Hassoun","doi":"10.1039/d4cc06344a","DOIUrl":"https://doi.org/10.1039/d4cc06344a","url":null,"abstract":"<p><p>A lithium battery benefits from the conversion reaction of a soluble polysulfide and a sulfur-based electrode. The battery with S-content from 4.5 to 6.5 mg cm^-2 achieves exceptional energy and power, from 700 W h kg_S^-1 and 100 W kg_S^-1 at 0.1C to 100 W h kg_S^-1 and 35 kW kg_S^-1 at 50C over 500 cycles.</p>","PeriodicalId":67,"journal":{"name":"Chemical Communications","volume":" ","pages":""},"PeriodicalIF":4.3,"publicationDate":"2025-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143447319","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":"Co-MOF-derived carbon nanomaterials with size-controlled FeCo alloys for oxygen evolution.","authors":"Junliang Chen, Yunan Ye, Yi Wu, Jie Liu, Xuemei Zhou, Qipeng Li, Jinjie Qian","doi":"10.1039/d4cc06285j","DOIUrl":"https://doi.org/10.1039/d4cc06285j","url":null,"abstract":"<p><p>A porous carbon material with size-controlled FeCo alloys and carbon nanotubes (CNTs) was obtained from pyrolysis of a Co-based metal-organic framework (MOF), followed by the Fe³⁺-etching process and CNT growth. This catalyst (CoOF-1-FeCoNC-CNT) displayed satisfactory OER activity, attributed to its large specific surface area, improved electrical conductivity, and the synergistic effect of the bimetallic FeCo alloy.</p>","PeriodicalId":67,"journal":{"name":"Chemical Communications","volume":" ","pages":""},"PeriodicalIF":4.3,"publicationDate":"2025-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143447325","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":"Glass electrospray for mass spectrometry <i>in situ</i> detection of living cells.","authors":"Xiyang Ge, Xiner Xing, Xiaoni Wang, Yiyan Yin, Xiaotong Shen, Jin Ouyang, Na Na","doi":"10.1039/d4cc06657j","DOIUrl":"https://doi.org/10.1039/d4cc06657j","url":null,"abstract":"<p><p>Here, we developed a platform consisting of glass electrospray coupled with mass spectrometry (MS) to detect living cells cultured on glass slides. With a high electric voltage, the adherent cells detached from the glass surface and then migrated to the tip of the glass slide. In this way, the intact cells could be well detected without needing to be diluted and without showing matrix affinity, adsorption, contamination, or damage.</p>","PeriodicalId":67,"journal":{"name":"Chemical Communications","volume":" ","pages":""},"PeriodicalIF":4.3,"publicationDate":"2025-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143447327","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}