ACS Omega最新文献

{"title":"Upconversion-Enhanced Luminescence in PMMA Doped with Rare Earth Ions by Plasmonic Resonance with Metallic Nanoparticles","authors":"Oswaldo Gallardo-Rivera,&nbsp;Anahi Rivera,&nbsp;Luis Octavio Meza Espinoza* and Zorayda Lazcano Ortiz,&nbsp;","doi":"10.1021/acsomega.4c0792710.1021/acsomega.4c07927","DOIUrl":"https://doi.org/10.1021/acsomega.4c07927https://doi.org/10.1021/acsomega.4c07927","url":null,"abstract":"<p >This study investigates the luminescent dynamics of poly(methyl methacrylate) (PMMA) doped with rare earth ions, focusing on donor and acceptor ions. The acceptor ions feature two excited energy levels, enabling upconversion through energy transfer (ET) with the donor ions. Additionally, this study examines how the luminescent dynamics is affected by the enhanced electric field achieved through plasmonic resonance with metallic nanoparticles (NPs). The motivation behind this study lies in the necessity to enhance the luminescence properties of materials for advanced applications in bioimaging and optical sensors. Utilizing Förster’s theory and the MNPBEM toolbox in MATLAB, the optimal NP radii for gold and silver, as well as the excitation wavelengths that maximize electric field amplification, were determined. Our findings show that silver NPs offer superior electric field enhancement (up to 8.7 times) compared to gold NPs (3.6 times). Emission amplification, influenced by the NP radius, excitation wavelength, and ion density, showed a significant correlation due to ET and excited-state absorption processes. Notably, silver NPs exhibited a maximum emission amplification of the second excited level of the acceptor ions of approximately 150 times. These findings offer valuable insights into utilizing plasmonic resonance and rare earth doping to enhance luminescent properties in materials with potential applications in biomedical imaging, biosensing, photovoltaic devices, and other advanced optical technologies. This work differs from previously published studies by focusing on the interaction of both excited-state absorption and ET in a model that considers the upconversion process and demonstrating a 2-fold higher electric field enhancement with silver NPs compared to gold. Furthermore, this study explores the optimization of NP size and excitation wavelengths to maximize the enhancement, which, to our knowledge, was not previously considered.</p>","PeriodicalId":22,"journal":{"name":"ACS Omega","volume":"10 12","pages":"11806–11816 11806–11816"},"PeriodicalIF":3.7,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acsomega.4c07927","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143737687","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":"Ni_1-<i>x</i> Mn _<i>x</i> Co₂O₄ Nanoparticles as High-Performance Electrochemical Sensor Materials for Acetaminophen Monitoring.","authors":"Alba Arenas-Hernandez, Francisco Enrique Cancino-Gordillo, Umapada Pal","doi":"10.1021/acsomega.4c10927","DOIUrl":"10.1021/acsomega.4c10927","url":null,"abstract":"<p><p>Ternary metal oxides, known for their superior electrical and optical properties compared to binary or conventional oxides, hold significant promise for catalysis and energy storage applications. This study investigates the electrochemical performance of Ni_1-<i>x</i> Mn _<i>x</i> Co₂O₄ nanoparticles for detecting acetaminophen in aqueous phosphate buffer solution. The cobaltite nanoparticles were obtained through a simple gel-combustion synthesis, and the sensors were characterized using cyclic voltammetry, chronoamperometry, and differential pulse voltammetry. The anodic peak currents associated with acetaminophen oxidation were assessed by varying the scan rate of current-voltage cycles. Among the sensors tested, the one fabricated with Ni_0.5Mn_0.5Co₂O₄ nanoparticles as an active material exhibited the highest sensitivity of 38.2 μA cm^-2 mM^-1 and a detection limit of approximately 2 μM, demonstrating its potential for sensitive and efficient acetaminophen detection. Moreover, the sensors fabricated using these ternary oxide nanostructures demonstrate a rapid chronoamperometric response time of 35.4 s and a decay lifetime of 0.31 s, highlighting the fast detection capabilities of acetaminophen. The electrochemical oxidation mechanism of acetaminophen and the charge transfer characteristics at the electrode-electrolyte interface have been discussed.</p>","PeriodicalId":22,"journal":{"name":"ACS Omega","volume":"10 11","pages":"11250-11263"},"PeriodicalIF":3.7,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11947848/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143750146","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":"Sustainable Approach to Fabricate High-Performance Symmetry Supercapacitor Electrodes from Natural Coconut-Shell-Derived Porous Activated Carbon with Nickel Oxide Nanocomposites.","authors":"Abdullah Ba Shbil, Nagaraju Yennappa Siddappa, Suresh Daddi Suraiah, Ganesha Honnu, Vijaykumar Siddappa Pujar, Sapna Sharanappa, Devendrappa Hundekal","doi":"10.1021/acsomega.4c09778","DOIUrl":"10.1021/acsomega.4c09778","url":null,"abstract":"<p><p>This paper reports high specific capacitance of an activated carbon nickel oxide nanocomposite (PCNiO) electrode that has been synthesized from natural coconut shell using carbonization and an activated PCNiO nanocomposite with the help of a hydrothermal process. The structural phase, chemical change, morphology, and pore structure of the PCNiO nanocomposite were investigated using a variety of techniques including X-ray diffraction (XRD), Fourier transform infrared (FTIR), Brunauer-Emmett-Teller (BET), thermo-gravimetric analysis (TGA), Raman spectroscopy, field emission scanning electron microscopy (FESEM), and high-resolution transmission electron microscopy (HRTEM) techniques. Among the prepared samples, PCNiO-150 displays the most significant characteristics that were used to create symmetric supercapacitors (SSCs). It had a specific capacitance (<i>C</i> _sp) of 598.6 F/g at a scan rate of 10 mV/s. The Galvanostatic charging-discharging (GCD) curves showed a high specific capacitance (<i>C</i> _sp) of 656.2 F/g at a current density (CD) of 1.5 A/g. Additionally, even after 5000 cycles, it had achieved long-term cycle stability with capacitance retention of 78.34% and Coulombic efficiency of 97.55%. Its highest energy density (ED) and power density (PD) were 44 Wh kg^-1 and 562.5 W kg^-1, respectively. Additionally, the fabricated SSC device is serially connected to turn on a commercial green LED for 30-40 s at the time of the experiment. This paper proposes a novel environmentally sustainable and easy-to-use carbon source as well as a cost-effective and technologically unique approach for carbon supercapacitors in environmental applications.</p>","PeriodicalId":22,"journal":{"name":"ACS Omega","volume":"10 11","pages":"11077-11090"},"PeriodicalIF":3.7,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11947821/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143750225","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":"Efflux-Enhanced Imidazoquinolines To Exploit Chemoresistance","authors":"Muhammad Haroon,&nbsp;Sharmin Sultana,&nbsp;Seyedeh A. Najibi,&nbsp;Emily T. Wang,&nbsp;Abbey Michaelson,&nbsp;Pranto S. M. Al Muied,&nbsp;Amy E. Nielsen and Rock J. Mancini*,&nbsp;","doi":"10.1021/acsomega.4c1129710.1021/acsomega.4c11297","DOIUrl":"https://doi.org/10.1021/acsomega.4c11297https://doi.org/10.1021/acsomega.4c11297","url":null,"abstract":"<p >The imidazoquinoline family of toll-like receptor (TLR) immune cell agonists has long demonstrated moderate anticancer immunogenic effects by activating tumoricidal immune cells and depleting immunosuppressive cells within the tumor microenvironment. At a molecular level, we have also established that several imidazoquinolines traffic from within cancer cells to the extracellular space via P-glycoprotein (P-gp)-mediated efflux, a process commonly upregulated as multidrug-resistant (MDR) cancers acquire chemoresistance. However, imidazoquinoline P-gp efflux has never been deliberately enhanced to exploit this process. This study pioneers efforts to optimize imidazoquinoline efflux, ultimately balancing immunogenic potency alongside functional efflux susceptibility. Starting from an established imidazoquinoline scaffold previously optimized for potency, efflux was significantly enhanced by elaborating the N1 benzylic position with amide- and sulfonamide-linked P-gp affinity fragments consisting of empirically established P-gp substrates as well as computationally predicted P-gp binders. Lead compounds were identified from this series that exhibited enhanced P-gp efflux with functional retention of TLR agonism. Similar to the parent imidazoquinoline scaffold, leads had limited direct cytotoxicity in both treatment-naive and MDR B16 melanoma models and did not significantly affect the efficacy or trafficking of the chemotherapeutic doxorubicin. Efflux-enhanced imidazoquinolines were preferentially expelled from MDR-B16 cells relative to treatment-naive cells, resulting in immunogenicity that was enhanced as a consequence of the acquired MDR phenotype. Because enhanced P-gp-mediated efflux is common to most MDR cancer types, we envision that these results could inspire the design of immunotherapeutic drugs with mechanisms of action that are broadly enhanced in MDR cancers that have failed treatment or acquired resistance to chemotherapeutics.</p>","PeriodicalId":22,"journal":{"name":"ACS Omega","volume":"10 12","pages":"12319–12333 12319–12333"},"PeriodicalIF":3.7,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acsomega.4c11297","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143737335","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":"Rhamnolipid-Modified PHB–Ectoine Nanoparticles for Multifunctional Skin Protection Against UVB, Irritation, and Bacteria","authors":"Alma Tyara Simbara,&nbsp;Fera Faridatul Habibah and Rukman Hertadi*,&nbsp;","doi":"10.1021/acsomega.4c1058310.1021/acsomega.4c10583","DOIUrl":"https://doi.org/10.1021/acsomega.4c10583https://doi.org/10.1021/acsomega.4c10583","url":null,"abstract":"<p >Rhamnolipid, poly(<i>R</i>)-3-hydroxybutyrate (PHB), and ectoine are sustainable compounds produced by specific bacteria known for their protective benefits, including promoting skin health in applications, such as facial wash, sunscreens, and moisturizers. These compounds have been extensively studied due to their unique physicochemical properties and biocompatibility. Leveraging these beneficial properties, this study aimed to create a multifunctional protective formulation by synthesizing nanoparticles from PHB and ectoine, which are acknowledged for their anti-ultraviolet B (UVB) and anti-irritation properties. The covalent bonding of PHB and ectoine was achieved using 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide (EDC), and the nanoparticles were produced through centrifugation. The synthesized nanoparticle (PHB–ectoine NPs) was physicochemically characterized and tested for anti-irritation and anti-UVB properties in vitro. The characterization revealed a homogeneous spherical shape with a distinct layered structure, primarily composed of carbon and oxygen. The PHB–ectoine NPs measured 527 ± 228 nm in size, had a zeta potential of −61.47 ± 0.64 mV, and exhibited notably higher anti-irritant and anti-UVB activities compared to PHB alone, by over 10 and 4 times, respectively. Furthermore, the addition of a rhamnolipid solution as a dispersant provided the nanofluid with antibacterial properties against<i>Staphylococcus aureus</i>. These results indicate that the rhamnolipid–PHB–ectoine nanoformulation shows significant potential as a multifunctional skin protective agent with anti-irritation, anti-UVB, and antibacterial capabilities.</p>","PeriodicalId":22,"journal":{"name":"ACS Omega","volume":"10 12","pages":"12200–12213 12200–12213"},"PeriodicalIF":3.7,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acsomega.4c10583","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143737682","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":"Study on a Coupling Model of Fracture Stress–Microseismic–Temperature of Composite Coal and Rock Deformation","authors":"Zhen Yang*,&nbsp;Liwen Ji*,&nbsp;Xin Li,&nbsp;Hao Li,&nbsp;Zhiyong Liu,&nbsp;Junbo Zhang and Haoyuan Liu,&nbsp;","doi":"10.1021/acsomega.4c1018810.1021/acsomega.4c10188","DOIUrl":"https://doi.org/10.1021/acsomega.4c10188https://doi.org/10.1021/acsomega.4c10188","url":null,"abstract":"<p >To reveal the coupling relationship between stress, microseismic, and temperature during the deformation and fracture of composite coal and to further study the generation mechanism of deformation and fracture microseismic of composite coal–rock, the SMT (stress–microseismic–thermal) coupled model was derived based on the previously established SCT (stress–charge–thermal) coupled model. The top rock, coal, and bottom rock were extracted to prepare composite coal–rock specimens in the ratios of 1:1:1, 1:2:1, and 1:4:1 and pure coal. The uniaxial loading fracture experiments were carried out on the coal–rock specimens at four different loading rates of 0.1, 0.3, 0.4, and 0.5 mm/min. The variation laws of electromagnetic radiation, microseismic voltage, and temperature signals during the uniaxial loading deformation and fracture process of the composite coal–rock specimens were investigated. The experimental results show that the microseismic voltage and electromagnetic radiation signals are weak at the initial loading stage. The maximum values of the two signals appear when the stress achieves the peak point and the temperature drops on a slight slope. With the increase in the loading rate, the maximum peaks of the two signals decrease, where the change in microseismic voltage is more prominent. In the experiment of different coal-to-rock ratios at 0.5 mm/min, the electromagnetic radiation does not change much, and the peak value of the microseismic voltage signal is the largest in the sample with the coal-to-rock ratio of 1:2:1, followed by that of the pure coal sample. With the thickening of the coal seam, the top rock temperature drops more, indicating that the three signals have a strong consistency and precursor warning function. According to the experimental data, the relationship between the microseismic voltage energy and stress is fitted, and the results show that the two signals are in an excellent exponential relationship and that the fitting coefficient is above 0.9. Combined with the SCT coupling model, the relationship between electromagnetic radiation stress and microseismic voltage energy stress is substituted into the SCT model; then, the induced charge variable is eliminated. The stress–microseismic–temperature (SMT) coupling model is derived. The SMT model is used to fit samples f₁–f₁₂, and the coefficients <i>m</i>₂ and <i>z</i>₂ are equipped to verify the fitting. The coefficient of multiple determination <i>R</i>² is generally above 0.9, indicating a higher accuracy compared with the SCT model. This suggests that the model has a strong fitting precision and provides a new approach for the prediction and forecasting methods of coal and rock dynamic disasters.</p>","PeriodicalId":22,"journal":{"name":"ACS Omega","volume":"10 12","pages":"12076–12087 12076–12087"},"PeriodicalIF":3.7,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acsomega.4c10188","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143737686","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":"Fe0/PTFE Triboelectric Nanogenerators for Ultrafast Dye and Antibiotic Degradation","authors":"Xiao-Feng Xu,&nbsp;Zhao-Jian Li,&nbsp;Zhen Zhang,&nbsp;Shuai-Yu Wu,&nbsp;Kai-Zhen Yuan,&nbsp;Lu-Yao Wang,&nbsp;Yun-Ze Long* and Hong-Di Zhang*,&nbsp;","doi":"10.1021/acsomega.4c1089210.1021/acsomega.4c10892","DOIUrl":"https://doi.org/10.1021/acsomega.4c10892https://doi.org/10.1021/acsomega.4c10892","url":null,"abstract":"<p >Triboelectric catalysis is a new technology that converts mechanical energy to chemical energy. This study presents a novel efficient triboelectric catalytic design based on iron (Fe⁰) and polytetrafluoroethylene (PTFE). The tribocatalytic effect was evaluated by degrading methyl orange (MO), crystal violet (CV), and tetracycline (TC). The degradation efficiency can reach 95, 97, and 93% within 24 min, respectively, and the kinetic constant <i>K</i> of CV was as high as 0.1460 min^–1. The comparison with the stirring experiment showed that the friction catalytic effect between Fe⁰ and PTFE was significantly enhanced under ultrasonic irradiation. Furthermore, the triboelectric effect is used to provide simplicity and strong triboelectric catalytic activity of Fe⁰/PTFE, and the influencing factors are analyzed. And the production of reactive oxygen species (ROS) of hydroxyl radicals and superoxide radicals increases during the catalytic process. The mechanism of triboelectric catalysis is discussed in terms of electron transfer and transition. This study utilizes the triboelectric effect of Fe⁰/PTFE to provide simplicity and superior triboelectric catalytic activity under ultrasonic irradiation.</p>","PeriodicalId":22,"journal":{"name":"ACS Omega","volume":"10 12","pages":"12233–12240 12233–12240"},"PeriodicalIF":3.7,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acsomega.4c10892","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143737683","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":"Noninvasive Detection of Macrophages in Atherosclerotic Lesions Using a Visipaque-Based Nanoparticle Contrast Agent for Computed Tomography","authors":"Shuo Liang,&nbsp;Min Ren,&nbsp;Yanhong Chen,&nbsp;Zhenchun Song,&nbsp;Yapeng Yang and Hong Zhang*,&nbsp;","doi":"10.1021/acsomega.4c0917010.1021/acsomega.4c09170","DOIUrl":"https://doi.org/10.1021/acsomega.4c09170https://doi.org/10.1021/acsomega.4c09170","url":null,"abstract":"<p >This study aimed to evaluate iodinated nanoparticles based on Visipaque for the detection of macrophages in atherosclerotic plaques using computed tomography (CT). The nanoparticles were developed using Visipaque and hydrophobic groups to enhance the macrophages in atherosclerotic lesions. The nanoparticles were measured using NanoSight, and their cellular toxicity was evaluated using the cell counting kit-8 assay. RAW264.7 macrophages were used to detect the cellular uptake of the nanoparticles. Aortic atherosclerotic plaques were induced in New Zealand rabbits (<i>n</i> = 6) by combining a high-cholesterol diet and aortic injury. The noninjured rabbits (<i>n</i> = 4) were fed a normal chow diet and used as controls. CT scans before and 2 h after Visipaque injection, followed by nanoparticle imaging 1 h later. Macrophages were counted using immunohistology with an anti-CD68 monoclonal antibody. The diameter of the nanoparticle agent was approximately 150 mM, and 90% varied broadly between 69 and 248 nm. In vitro experiments demonstrated that the nanoparticles had low cellular toxicity and were effectively endocytosed by macrophages in a time- and dose-dependent manner. In vivo, CT imaging demonstrated that the nanoparticle density was higher in the aortic wall plaques in atherosclerotic rabbits than in control rabbits. The histologic staining confirmed successful atherosclerosis modeling in rabbits and abundant macrophage infiltration in the aortic wall, preferentially taking up the nanoparticles. In conclusion, this study suggests that the novel nanoparticles could be a promising, effective contrast agent for the detection of macrophages in atherosclerotic plaques using CT.</p>","PeriodicalId":22,"journal":{"name":"ACS Omega","volume":"10 11","pages":"10979–10986 10979–10986"},"PeriodicalIF":3.7,"publicationDate":"2025-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acsomega.4c09170","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143678589","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":"Rod-Like LiBC Anode with High Specific Capacity in Li-Ion Batteries","authors":"Zhihua Xu,&nbsp;Yu Wu,&nbsp;Yangyang Zheng,&nbsp;Yucheng Chen,&nbsp;De Li*,&nbsp;Wenting Ji* and Yong Chen*,&nbsp;","doi":"10.1021/acsomega.5c0065010.1021/acsomega.5c00650","DOIUrl":"https://doi.org/10.1021/acsomega.5c00650https://doi.org/10.1021/acsomega.5c00650","url":null,"abstract":"<p >As a well-known graphite-like material in superconductivity, lithium borocarbide (LiBC) can also be utilized as an electrode material in Li-ion batteries with a high specific capacity, which is assigned to the B–B bond produced through the aqueous reaction or the initial charge process. In this work, a rod-like LiBC sample (Ti-LiBC) is synthesized with the precursors of LiH + B + graphite in a sealed Ti tube through high-temperature sintering. Compared with the normal SUS-LiBC sintered in a sealed SUS304 tube, the Ti-LiBC possesses a lot of B–B bonds and a strong EPR signal, and it delivers a higher specific capacity (ca. 500 mAh g^–1 at a mean discharge and charge potentials of 0.85 and 1.89 V, respectively) with excellent rate and cycle performances. Actually, the Ti metal can react with the H₂ gas to produce the TiH₂ phase at a high temperature, of which the extent determines the morphology of LiBC product, and the substitution of Li metal for LiH as the precursor can also result in the rod-like structure and the high specific capacity. Therefore, a hydrogen-free atmosphere is the key to synthesizing rodlike LiBC with excellent electrochemical properties, and this strategy might be extended to other graphite-like materials.</p>","PeriodicalId":22,"journal":{"name":"ACS Omega","volume":"10 12","pages":"12636–12644 12636–12644"},"PeriodicalIF":3.7,"publicationDate":"2025-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acsomega.5c00650","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143737532","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":"Copper- and Zinc-Based Coordination Polymers toward the Development of More Efficient Agrochemicals","authors":"Samuel Morales-Cámara,&nbsp;Duane Choquesillo-Lazarte,&nbsp;Belen Fernández,&nbsp;Antonio Rodríguez-Diéguez,&nbsp;Pablo Salcedo-Abraira* and Sara Rojas*,&nbsp;","doi":"10.1021/acsomega.4c1097710.1021/acsomega.4c10977","DOIUrl":"https://doi.org/10.1021/acsomega.4c10977https://doi.org/10.1021/acsomega.4c10977","url":null,"abstract":"<p >Inorganic agrochemicals have been used by the food industry for thousands of years to maximize production and quality, with copper(II) sulfate being one of the main used pesticides. Given the increasing global population (expected to reach 9.6 billion by 2050) and the challenges facing agricultural production, there is a pressing need to address the impact of intensified agrochemical use (e.g., soil and water contamination, human health risk, pesticide resistance, etc.). Coordination polymers (CPs) as agrochemicals offer several significant advantages compared to traditional agrochemicals, such as the controlled release of the active ingredients in the target zone and reduced toxic doses released to environment. In this work, the plant growth regulator 3-indolepropanoic acid (IPA), which stimulates root initiation and elongation, is used as a chelating agent of Cu²⁺ and Zn²⁺ metal ions, both known for their antibacterial and antifungal properties, to obtain two crystalline CPs, named Cu-IPA [Cu(H₁₀C₁₁NO₂)₂]_<i>n</i> and Zn-IPA [Zn(H₁₀C₁₁NO₂)₂(H₂O)]_<i>n</i>. Their role as potential antibacterial agents was evaluated. First, the stability of these materials was studied, showing a fast release of both cations (100% after 8 and 3 h for Cu-IPA and Zn-IPA, respectively) in aqueous solution. The antibacterial test against <i>Escherichia coli</i>, a bacterium involved in many farm animal infections, evidenced a notable growth inhibition, with values of inhibition of the colony forming unit (CFU) for Cu-IPA of 10.2 and 26.2% and for Zn-IPA of 2.1 and 5.3% at 500 and 1500 ppm, respectively. This study highlights the potential of CPs for enhancing efficiency and sustainability of inorganic agrochemicals in agriculture.</p>","PeriodicalId":22,"journal":{"name":"ACS Omega","volume":"10 11","pages":"11274–11281 11274–11281"},"PeriodicalIF":3.7,"publicationDate":"2025-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acsomega.4c10977","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143678625","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}