The boron complexes were designed using, to facilitate the synthesis of boron complexes. The focus was on selectively synthesizing unsymmetrical boron complexes using ketene dithio-acetals and specifically involving BF3-OEt2, in which the po- sition of the nitrogen atom in the bidentate ligand is varied. Two specific complexes, 1c and 2d, were noted to be emissive in both solution and solid state. The emission properties of these complexes were influenced by the position of the nitrogen atom in the keto-iminate ligand, which suggests that the ligand structure can significantly impact the optical behavior. 2d displayed aggregation-induced emission (AIE), and on the other hand, 1c exhibited aggregation-caused quenching (ACQ) often due to the formation of non-emissive aggregates. The boron complexes were shown to selectively sense picric acid over other nitroaromatic compounds (NACs). Due to their high selectivity for picric acid, these complexes could have potential applications in detecting specific chemical species, like explosives. The synthesized complexes were characterized using various techniques by NMR, Mass Spectrometry and DFT Calculations. Lifetime Decay Measurements technique is used to analyze the emission behavior and photophysical properties, providing insights into the excited-state dynamics of the complexes.
{"title":"Chemistry of ketene dithioacetals: Design and synthesis of O,N/N,O-bidentate unsymmetrical boron complexes and their aggregation behavior","authors":"Manivannan Janaki, Vediappan Ramesh, Sivakumar Shanmugam","doi":"10.1016/j.rechem.2025.102868","DOIUrl":"10.1016/j.rechem.2025.102868","url":null,"abstract":"<div><div>The boron complexes were designed using, to facilitate the synthesis of boron complexes. The focus was on selectively synthesizing unsymmetrical boron complexes using ketene dithio-acetals and specifically involving BF3-OEt2, in which the po- sition of the nitrogen atom in the bidentate ligand is varied. Two specific complexes, <strong>1c</strong> and <strong>2d</strong>, were noted to be emissive in both solution and solid state. The emission properties of these complexes were influenced by the position of the nitrogen atom in the keto-iminate ligand, which suggests that the ligand structure can significantly impact the optical behavior. <strong>2d</strong> displayed aggregation-induced emission (AIE), and on the other hand, <strong>1c</strong> exhibited aggregation-caused quenching (ACQ) often due to the formation of non-emissive aggregates. The boron complexes were shown to selectively sense picric acid over other nitroaromatic compounds (NACs). Due to their high selectivity for picric acid, these complexes could have potential applications in detecting specific chemical species, like explosives. The synthesized complexes were characterized using various techniques by NMR, Mass Spectrometry and DFT Calculations. Lifetime Decay Measurements technique is used to analyze the emission behavior and photophysical properties, providing insights into the excited-state dynamics of the complexes.</div></div>","PeriodicalId":420,"journal":{"name":"Results in Chemistry","volume":"18 ","pages":"Article 102868"},"PeriodicalIF":4.2,"publicationDate":"2025-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145568609","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-11-01DOI: 10.1016/j.rechem.2025.102846
Yuxin Du , Haolu Sun , Liying Han , Xudong Jing , Fengyi Geng , Jianliang Bai , Runfang Pei
Carbon dots (CDs), as a novel type of fluorescent nanomaterial derived from graphene, carbon nanotubes, small organic molecules, polymers, biomass, and so on, have been highly popular in the optical field since it was discovered in 2004. Phenylenediamine C6H4(NH2)2 (PD), containing highly reactive amino groups, can be oxidized or polymerized under specific conditions to produce various products, which can be further polymerized, cross-linked and carbonized to obtain CDs. In recent years, CDs synthesized from PD as a precursor or as the main precursor have distinguished themselves in many research fields due to unique physical and chemical properties, including very impressive biocompatibility, negligible toxicity and exceptional performance of adjustable photoluminescence (PL) emission. Herein, we review the latest developments of CDs synthesized from PD as the single precursor or the main precursor, including a series of different preparation methods, different PL properties and possible luminous mechanisms. Furthermore, the review outlines the diverse applications of CDs in fields such as biomedical engineering, optical anti-counterfeiting, sensing and light-emitting diodes (LEDs), while also addressing the challenges and future prospects associated with CDs synthesized from PD as the single precursor or the main precursor.
{"title":"Review on Phenylenediamine derived carbon dots and their applications","authors":"Yuxin Du , Haolu Sun , Liying Han , Xudong Jing , Fengyi Geng , Jianliang Bai , Runfang Pei","doi":"10.1016/j.rechem.2025.102846","DOIUrl":"10.1016/j.rechem.2025.102846","url":null,"abstract":"<div><div>Carbon dots (CDs), as a novel type of fluorescent nanomaterial derived from graphene, carbon nanotubes, small organic molecules, polymers, biomass, and so on, have been highly popular in the optical field since it was discovered in 2004. Phenylenediamine C<sub>6</sub>H<sub>4</sub>(NH<sub>2</sub>)<sub>2</sub> (PD), containing highly reactive amino groups, can be oxidized or polymerized under specific conditions to produce various products, which can be further polymerized, cross-linked and carbonized to obtain CDs. In recent years, CDs synthesized from PD as a precursor or as the main precursor have distinguished themselves in many research fields due to unique physical and chemical properties, including very impressive biocompatibility, negligible toxicity and exceptional performance of adjustable photoluminescence (PL) emission. Herein, we review the latest developments of CDs synthesized from PD as the single precursor or the main precursor, including a series of different preparation methods, different PL properties and possible luminous mechanisms. Furthermore, the review outlines the diverse applications of CDs in fields such as biomedical engineering, optical anti-counterfeiting, sensing and light-emitting diodes (LEDs), while also addressing the challenges and future prospects associated with CDs synthesized from PD as the single precursor or the main precursor.</div></div>","PeriodicalId":420,"journal":{"name":"Results in Chemistry","volume":"18 ","pages":"Article 102846"},"PeriodicalIF":4.2,"publicationDate":"2025-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145412721","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Novel Cu(II), Ni(II), and Zn(II) complexes were synthesized using a ligand derived from phenylalaninol and 1,2-dibromoethane with loss of an organic molecule like HBr, through a condensation reaction. The complexes were characterized using FT-IR spectroscopy, 1HNMR and 13CNMR spectroscopy, mass spectrometry, elemental analysis, and UV–vis spectroscopy. The DNA-binding affinities of the complexes were quantified using the Scatchard equation, yielding binding constants (Kb) of 4.3 × 104 M−1 for Cu(II), 3.7 × 104 M−1 for Zn(II), and 2.8 × 104 M−1 for Ni(II). These studies were validated by fluorescence quenching experiments, where the Stern-Volmer constants (Ksv) were observed as 4.21 × 104 M−1 for Cu(II), 1.3 × 104 M−1 for Ni(II), and 2.7 × 104 M−1 for Zn(II), further confirming the DNA-binding results. Due to its superior binding properties, the Cu(II) complex was selected for further biological evaluation, demonstrating antibacterial activity, antioxidant potential, and cytotoxicity against E. coli, DPPH assay, and MCF-7 cancer cell lines, respectively. These results reveal that the Cu(II) complex acts as a promising drug candidate for targeted drug delivery. UV–vis titration studies indicated an intercalative binding mode for the Cu(II) complex, evidenced by a hyperchromic effect with a slight bathochromic shift. Molecular docking further confirmed its intercalation into DNA base pairs, with binding energies ranging from −5.0 to −7.0 kcal/mol. In antibacterial testing against E. coli, it showed a 6 mm inhibition zone at 6.25 % per disc in the Kirby-Bauer assay, as compared to the ciprofloxacin (26 mm at 10 μg/disc) as a reference. Antioxidant studies using the DPPH assay highlighted its redox-active nature, likely due to the Cu(II)/Cu(I) redox couple. Additionally, the complex demonstrated significant cytotoxicity against MCF-7 breast cancer cells, inducing apoptosis through ROS generation and mitochondrial dysfunction. The results obtained from DNA binding and other biological studies revealed that the Cu(II) complex can serve as a promising multifunctional agent with strong selective DNA-binding, antimicrobial, and anticancer capabilities. Such findings make it appropriate for targeted drug delivery. The observations facilitate further structural alterations intended to enhance selectivity and diminish off-target activity for clinical application.
{"title":"De-novo design and synthesis of cu(II) complex from Phenylalaninol-based ligand with potent anticancer chemotherapeutics: DNA binding, antioxidant, antimicrobial, molecular docking, and cytotoxic studies against MCF-7 cancer cell lines","authors":"Priya , Neeraj Kumar , Anupama Sharma , Mukesh Jangir , Girish Chandra Sharma","doi":"10.1016/j.rechem.2025.102803","DOIUrl":"10.1016/j.rechem.2025.102803","url":null,"abstract":"<div><div>Novel Cu(II), Ni(II), and Zn(II) complexes were synthesized using a ligand derived from phenylalaninol and 1,2-dibromoethane with loss of an organic molecule like HBr, through a condensation reaction. The complexes were characterized using FT-IR spectroscopy, <sup>1</sup>HNMR and <sup>13</sup>CNMR spectroscopy, mass spectrometry, elemental analysis, and UV–vis spectroscopy. The DNA-binding affinities of the complexes were quantified using the Scatchard equation, yielding binding constants (K<sub>b</sub>) of 4.3 × 10<sup>4</sup> M<sup>−1</sup> for Cu(II), 3.7 × 10<sup>4</sup> M<sup>−1</sup> for Zn(II), and 2.8 × 10<sup>4</sup> M<sup>−1</sup> for Ni(II). These studies were validated by fluorescence quenching experiments, where the Stern-Volmer constants (Ksv) were observed as 4.21 × 10<sup>4</sup> M<sup>−1</sup> for Cu(II), 1.3 × 10<sup>4</sup> M<sup>−1</sup> for Ni(II), and 2.7 × 10<sup>4</sup> M<sup>−1</sup> for Zn(II), further confirming the DNA-binding results. Due to its superior binding properties, the Cu(II) complex was selected for further biological evaluation, demonstrating antibacterial activity, antioxidant potential, and cytotoxicity against <em>E. coli</em>, DPPH assay, and MCF-7 cancer cell lines, respectively. These results reveal that the Cu(II) complex acts as a promising drug candidate for targeted drug delivery. UV–vis titration studies indicated an intercalative binding mode for the Cu(II) complex, evidenced by a hyperchromic effect with a slight bathochromic shift. Molecular docking further confirmed its intercalation into DNA base pairs, with binding energies ranging from −5.0 to −7.0 kcal/mol. In antibacterial testing against <em>E. coli</em>, it showed a 6 mm inhibition zone at 6.25 % per disc in the Kirby-Bauer assay, as compared to the ciprofloxacin (26 mm at 10 μg/disc) as a reference. Antioxidant studies using the DPPH assay highlighted its redox-active nature, likely due to the Cu(II)/Cu(I) redox couple. Additionally, the complex demonstrated significant cytotoxicity against MCF-7 breast cancer cells, inducing apoptosis through ROS generation and mitochondrial dysfunction. The results obtained from DNA binding and other biological studies revealed that the Cu(II) complex can serve as a promising multifunctional agent with strong selective DNA-binding, antimicrobial, and anticancer capabilities. Such findings make it appropriate for targeted drug delivery. The observations facilitate further structural alterations intended to enhance selectivity and diminish off-target activity for clinical application.</div></div>","PeriodicalId":420,"journal":{"name":"Results in Chemistry","volume":"18 ","pages":"Article 102803"},"PeriodicalIF":4.2,"publicationDate":"2025-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145412723","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-11-01DOI: 10.1016/j.rechem.2025.102825
Chao Huang , Dhafer O. Alshahrani , H. Khan
This study reports a novel, eco-friendly synthesis of MnSeO₄ via a green sol–gel route using okra extract as a natural stabilizing and chelating agent. The bioactive compounds in okra facilitated controlled nucleation and growth, resulting in enhanced structural and electrochemical properties. XRD confirmed the formation of single-phase orthorhombic MnSeO₄ with a crystallite size of 22.6 nm and high crystallinity (67 %), while Raman spectroscopy validated MnO and SeO vibrational modes. SEM revealed porous, interconnected micro-grains (∼47 μm), favorable for electrolyte penetration, and UV–Vis spectroscopy showed a bandgap of 2.23 eV, indicating semiconducting behavior. Electrochemical analysis demonstrated a maximum specific capacitance of 658 F g−1 at 1 A/g, and 87.4 % capacitance retention over 500 cycles. EIS results confirmed low charge transfer resistance (17.87 Ω), highlighting fast ion kinetics. These findings establish okra-assisted MnSeO₄ as a promising electrode material for high-performance and sustainable supercapacitor applications.
本研究报告了一种新颖的，生态友好的合成MnSeO₄通过绿色溶胶-凝胶途径使用秋葵提取物作为天然的稳定和螯合剂。秋葵中的生物活性化合物有助于控制成核和生长，从而增强结构和电化学性能。XRD证实形成了晶粒尺寸为22.6 nm、结晶度高达67%的单相正交MnSeO₄，拉曼光谱证实了MnO和SeO的振动模式。扫描电镜显示多孔，相互连接的微颗粒（~ 47 μm），有利于电解质渗透，紫外可见光谱显示带隙为2.23 eV，表明半导体行为。电化学分析表明，在1 a /g时，最大比电容为658 F g−1,500次循环后电容保持率为87.4%。EIS结果证实低电荷转移电阻（17.87 Ω），突出了快速离子动力学。这些发现表明，秋葵辅助MnSeO₄是一种有前途的高性能和可持续超级电容器电极材料。
{"title":"Green sol-gel synthesis of MnSeO4 using okra extract for enhanced electrochemical energy storage","authors":"Chao Huang , Dhafer O. Alshahrani , H. Khan","doi":"10.1016/j.rechem.2025.102825","DOIUrl":"10.1016/j.rechem.2025.102825","url":null,"abstract":"<div><div>This study reports a novel, eco-friendly synthesis of MnSeO₄ via a green sol–gel route using okra extract as a natural stabilizing and chelating agent. The bioactive compounds in okra facilitated controlled nucleation and growth, resulting in enhanced structural and electrochemical properties. XRD confirmed the formation of single-phase orthorhombic MnSeO₄ with a crystallite size of 22.6 nm and high crystallinity (67 %), while Raman spectroscopy validated Mn<img>O and Se<img>O vibrational modes. SEM revealed porous, interconnected micro-grains (∼47 μm), favorable for electrolyte penetration, and UV–Vis spectroscopy showed a bandgap of 2.23 eV, indicating semiconducting behavior. Electrochemical analysis demonstrated a maximum specific capacitance of 658 F g<sup>−1</sup> at 1 A/g, and 87.4 % capacitance retention over 500 cycles. EIS results confirmed low charge transfer resistance (17.87 Ω), highlighting fast ion kinetics. These findings establish okra-assisted MnSeO₄ as a promising electrode material for high-performance and sustainable supercapacitor applications.</div></div>","PeriodicalId":420,"journal":{"name":"Results in Chemistry","volume":"18 ","pages":"Article 102825"},"PeriodicalIF":4.2,"publicationDate":"2025-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145412576","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-11-01DOI: 10.1016/j.rechem.2025.102824
Mahesh Kancherla , A. Mary Shamya , S.A. Wasim Akram , J. John Christopher , S. Zuha Umme Kulsum , A. Athar Parvez , Thaseen Begum , K. Kabiruddin Ahmed , Noor Zaheer Ahmed , Rampratap Meena , Pawan Kumar
Iṭrīfal Ṣaghīr (IS) is a widely utilized composition in the Unani System of Medicine, prescribed for the conditions of memory impairment, nerve debility, neurasthenia, and hemorrhoids. Standardization is a fundamental component in developing a quality assurance framework for production and manufacturing, as it mitigates variability across different batches and guarantees that polyherbal formulations meet the requisite standards of acceptability, safety, high quality, and efficacy. As per WHO guidelines, three independent production batches of Iṭrīfal Ṣaghīr were analyzed to ensure reproducibility, and batch-to-batch consistency and also examined for the physicochemical parameters, heavy metals (As, Cd, Hg, and Pd), microbial load, and aflatoxin to ensure optimal safety and quality control, covering the entire process from raw materials to finished formulations. Secondary metabolites were identified by phytochemical analysis, and the presence of bioactive substances was qualitatively determined using HPTLC and GC/MS. FTIR spectroscopy was used to determine the presence of functional groups. We found that all the quality control standards of Iṭrīfal Ṣaghīr met the WHO limits for ions. Phytochemical analysis, HPTLC fingerprint profiles, and GC–MS profiles of the ethanol extract revealed the significant presence of bioactive compounds. An FT-IR spectroscopic study of the prepared ethanol extract revealed several typical band values associated with different functional groups, including alcohols, amines, phenols, alkanes, alkenes, fluoro compounds, and conjugated acid groups. According to WHO standards, these results justified the safety and efficacy of the Iṭrīfal Ṣaghīr. Further research is needed to identify the bioactive compounds and biological activities that are responsible for the therapeutic effects.
{"title":"Phytochemical fingerprinting of ethanolic extract of Iṭrīfal Ṣaghīr – An unani formulation: standardization, HPTLC and GC–MS based analysis","authors":"Mahesh Kancherla , A. Mary Shamya , S.A. Wasim Akram , J. John Christopher , S. Zuha Umme Kulsum , A. Athar Parvez , Thaseen Begum , K. Kabiruddin Ahmed , Noor Zaheer Ahmed , Rampratap Meena , Pawan Kumar","doi":"10.1016/j.rechem.2025.102824","DOIUrl":"10.1016/j.rechem.2025.102824","url":null,"abstract":"<div><div><em>Iṭrīfal Ṣaghīr</em> (IS) is a widely utilized composition in the Unani System of Medicine, prescribed for the conditions of memory impairment, nerve debility, neurasthenia, and hemorrhoids. Standardization is a fundamental component in developing a quality assurance framework for production and manufacturing, as it mitigates variability across different batches and guarantees that polyherbal formulations meet the requisite standards of acceptability, safety, high quality, and efficacy. As per WHO guidelines, three independent production batches of <em>Iṭrīfal Ṣaghīr</em> were analyzed to ensure reproducibility, and batch-to-batch consistency and also examined for the physicochemical parameters, heavy metals (As, Cd, Hg, and Pd), microbial load, and aflatoxin to ensure optimal safety and quality control, covering the entire process from raw materials to finished formulations. Secondary metabolites were identified by phytochemical analysis, and the presence of bioactive substances was qualitatively determined using HPTLC and GC/MS. FTIR spectroscopy was used to determine the presence of functional groups. We found that all the quality control standards of <em>Iṭrīfal Ṣaghīr</em> met the WHO limits for ions. Phytochemical analysis, HPTLC fingerprint profiles, and GC–MS profiles of the ethanol extract revealed the significant presence of bioactive compounds. An FT-IR spectroscopic study of the prepared ethanol extract revealed several typical band values associated with different functional groups, including alcohols, amines, phenols, alkanes, alkenes, fluoro compounds, and conjugated acid groups. According to WHO standards, these results justified the safety and efficacy of the <em>Iṭrīfal Ṣaghīr</em>. Further research is needed to identify the bioactive compounds and biological activities that are responsible for the therapeutic effects.</div></div>","PeriodicalId":420,"journal":{"name":"Results in Chemistry","volume":"18 ","pages":"Article 102824"},"PeriodicalIF":4.2,"publicationDate":"2025-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145412820","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-11-01DOI: 10.1016/j.rechem.2025.102861
Mariem M. Motawea
The excellent performance of aluminum makes it an important role in infrastructure development, transportation, aerospace, and many other industries fields. Therefore, finding green aluminum corrosion inhibitors that work very well is quickly with high efficiency is becoming a research hot spot. In this work, the study of as eco-friendly corrosion inhibitor for Aluminum (Al) in 1 M HCl was studied. This study examined by mass loss (ML), electrochemical impedance spectroscopy (EIS), and potentiodynamic polarization (PDP) techniques. A corroding to the finding, increasing PSY concentration improved the percent inhibition efficiency (% IE), reaching 90.2% at 120 ppm and 298 K. Further increasing the temperature to 325 K at the same concentration resulted in a% IE of 83.9% as determined by the ML method. As the temperature rises, the inhibitory efficacy (IE) falls and rises with the increase PSY extract dosage. On the surface of Al, PSY adsorbs according to the Langmuir adsorption isotherm involving physical adsorption, in hydrochloric acid solution. The adsorption phenomena was found to be spontaneous and exothermic based on the computed values of the adsorption equilibrium constant (Kads) and the standard free energy change of adsorption (ΔGoads).PDP studies, along with thermodynamic calculations, revealed that the extract functions through a mixed-type adsorption mechanism. Data from electrochemical impedance spectroscopy showed that as the extract concentration rises, the resistance (Rct) rises and the double layer capacitance (Cdl) falls, supporting the suggested adsorption process mechanism. The presence of an adsorbed film on the Al surface was confirmed by using Scan electron microscope (SEM), Atomic Force Microscopy (AFM) and Fourier Transform Infrared Spectroscopy (FT-IR). Further understanding of the inhibitory mechanism was made possible by DFT-based quantum chemical indices. There is good agreement between the inhibitory efficiency values derived from EIS, PDP, and ML techniques.
铝的优异性能使其在基础设施建设、交通运输、航空航天等许多工业领域发挥着重要作用。因此，寻找起效快、效率高的绿色铝缓蚀剂已成为研究热点。本文研究了1 M HCl环境下铝（Al）的环保型缓蚀剂。本研究采用质量损失（ML）、电化学阻抗谱（EIS）和动电位极化（PDP）技术进行检测。与此同时，PSY浓度的增加提高了缓蚀率（% IE），在120 ppm和298 K条件下达到90.2%。在相同的浓度下，进一步升高温度至325 K，通过ML法测定，IE为83.9%。随着温度的升高，抑制效果（IE）随PSY提取物用量的增加而下降和上升。在Al表面，PSY在盐酸溶液中按照Langmuir吸附等温线进行物理吸附。通过计算吸附平衡常数（Kads）和吸附的标准自由能变化（ΔGoads），发现吸附现象是自发的，是放热的。PDP研究以及热力学计算表明，萃取物通过混合型吸附机制起作用。电化学阻抗谱数据表明，随着萃取物浓度的升高，电阻（Rct）升高，双层电容（Cdl）下降，支持了所提出的吸附过程机制。利用扫描电镜（SEM）、原子力显微镜（AFM）和傅里叶变换红外光谱（FT-IR）证实了铝表面有吸附膜的存在。基于dft的量子化学指标可以进一步了解抑制机制。从EIS， PDP和ML技术中得到的抑制效率值之间有很好的一致性。
{"title":"Parsley extract as a green corrosion inhibitor for aluminum in 1 M HCl environment","authors":"Mariem M. Motawea","doi":"10.1016/j.rechem.2025.102861","DOIUrl":"10.1016/j.rechem.2025.102861","url":null,"abstract":"<div><div>The excellent performance of aluminum makes it an important role in infrastructure development, transportation, aerospace, and many other industries fields. Therefore, finding green aluminum corrosion inhibitors that work very well is quickly with high efficiency is becoming a research hot spot. In this work, the study of as eco-friendly corrosion inhibitor for Aluminum (Al) in 1 M HCl was studied. This study examined by mass loss (ML), electrochemical impedance spectroscopy (EIS), and potentiodynamic polarization (PDP) techniques. A corroding to the finding, increasing PSY concentration improved the percent inhibition efficiency (% IE), reaching 90.2% at 120 ppm and 298 K. Further increasing the temperature to 325 K at the same concentration resulted in a% IE of 83.9% as determined by the ML method. As the temperature rises, the inhibitory efficacy (IE) falls and rises with the increase PSY extract dosage. On the surface of Al, PSY adsorbs according to the Langmuir adsorption isotherm involving physical adsorption, in hydrochloric acid solution. The adsorption phenomena was found to be spontaneous and exothermic based on the computed values of the adsorption equilibrium constant (K<sub>ads</sub>) and the standard free energy change of adsorption (ΔG<sup>o</sup><sub>ads</sub>).PDP studies, along with thermodynamic calculations, revealed that the extract functions through a mixed-type adsorption mechanism. Data from electrochemical impedance spectroscopy showed that as the extract concentration rises, the resistance (R<sub>ct</sub>) rises and the double layer capacitance (C<sub>dl</sub>) falls, supporting the suggested adsorption process mechanism. The presence of an adsorbed film on the Al surface was confirmed by using Scan electron microscope (SEM), Atomic Force Microscopy (AFM) and Fourier Transform Infrared Spectroscopy (FT-IR). Further understanding of the inhibitory mechanism was made possible by DFT-based quantum chemical indices. There is good agreement between the inhibitory efficiency values derived from EIS, PDP, and ML techniques.</div></div>","PeriodicalId":420,"journal":{"name":"Results in Chemistry","volume":"18 ","pages":"Article 102861"},"PeriodicalIF":4.2,"publicationDate":"2025-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145462829","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-11-01DOI: 10.1016/j.rechem.2025.102840
Andrii Tupys , Barbara Wagner , Aleksandra Towarek , Olha Dushna , Katarzyna Serwan , Krystian Jażdżewski , Ewa Bulska
The primary objective of this study was to assess the elemental signature of blood from patients who had been initially diagnosed with the impact of COVID-19 infection. A drop of finger-blood was deposited on clinical filter paper, and then analyzed to evaluate the number of anti-SARS-CoV-2 antibodies, which would indicate the patient's status. Antibody levels were determined using the Anti-SARS-CoV-2 QuantiVac ELISA (IgG) quantitative immunoassay. The remaining samples of dried blood spots (DBSs) were subsequently subjected to a multi-elemental analysis by means of laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS). Transient signals of selected elements were monitored with isotope 57Fe assigned as the internal standard. The principal component analysis (PCA) was used to evaluate the possible correlation between the elemental composition of DBS with the number of antibodies. The preformed classification enabled the linking of antibody levels of patients infected with the virus with the elemental status of blood, indicating the body's reaction to the virus.
{"title":"Preliminary studies of dried blood spots elemental signature following diagnosis of SARS-CoV-2","authors":"Andrii Tupys , Barbara Wagner , Aleksandra Towarek , Olha Dushna , Katarzyna Serwan , Krystian Jażdżewski , Ewa Bulska","doi":"10.1016/j.rechem.2025.102840","DOIUrl":"10.1016/j.rechem.2025.102840","url":null,"abstract":"<div><div>The primary objective of this study was to assess the elemental signature of blood from patients who had been initially diagnosed with the impact of COVID-19 infection. A drop of finger-blood was deposited on clinical filter paper, and then analyzed to evaluate the number of anti-SARS-CoV-2 antibodies, which would indicate the patient's status. Antibody levels were determined using the Anti-SARS-CoV-2 QuantiVac ELISA (IgG) quantitative immunoassay. The remaining samples of dried blood spots (DBSs) were subsequently subjected to a multi-elemental analysis by means of laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS). Transient signals of selected elements were monitored with isotope <sup>57</sup>Fe assigned as the internal standard. The principal component analysis (PCA) was used to evaluate the possible correlation between the elemental composition of DBS with the number of antibodies. The preformed classification enabled the linking of antibody levels of patients infected with the virus with the elemental status of blood, indicating the body's reaction to the virus.</div></div>","PeriodicalId":420,"journal":{"name":"Results in Chemistry","volume":"18 ","pages":"Article 102840"},"PeriodicalIF":4.2,"publicationDate":"2025-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145462836","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-11-01DOI: 10.1016/j.rechem.2025.102859
Aderaw Anteneh Belew , Shushay Hagos Gebre , Melesse Ababy Assege , Desta Shumuye Meshesha , Misganaw Tegegne Ayana
The rapid advancement of nanotechnology has opened new avenues in medicine, electronics, environmental remediation, and energy. Among various nanomaterials, gold nanoparticles (AuNPs) have attracted significant attention due to their distinctive physicochemical characteristics, low toxicity, and broad application potential. This review aims to summarize the biosynthesis of AuNPs via green routes, including plants, bacteria, fungi, and algae, and to evaluate their biomedical, catalytic, and environmental applications. Key observations include their strong antibacterial, antifungal, antiviral, and biosensing activities, as well as their effectiveness in photocatalytic degradation of organic dyes. We also identify challenges in large-scale production, stability, and reproducibility, and highlight future directions for the development of sustainable, efficient, and multifunctional AuNPs. This review provides a comprehensive framework for researchers to advance green synthesis strategies and explore innovative applications of AuNPs.
{"title":"Biosynthesis of gold nanoparticle: Current applications, challenges, and future prospects","authors":"Aderaw Anteneh Belew , Shushay Hagos Gebre , Melesse Ababy Assege , Desta Shumuye Meshesha , Misganaw Tegegne Ayana","doi":"10.1016/j.rechem.2025.102859","DOIUrl":"10.1016/j.rechem.2025.102859","url":null,"abstract":"<div><div>The rapid advancement of nanotechnology has opened new avenues in medicine, electronics, environmental remediation, and energy. Among various nanomaterials, gold nanoparticles (AuNPs) have attracted significant attention due to their distinctive physicochemical characteristics, low toxicity, and broad application potential. This review aims to summarize the biosynthesis of AuNPs via green routes, including plants, bacteria, fungi, and algae, and to evaluate their biomedical, catalytic, and environmental applications. Key observations include their strong antibacterial, antifungal, antiviral, and biosensing activities, as well as their effectiveness in photocatalytic degradation of organic dyes. We also identify challenges in large-scale production, stability, and reproducibility, and highlight future directions for the development of sustainable, efficient, and multifunctional AuNPs. This review provides a comprehensive framework for researchers to advance green synthesis strategies and explore innovative applications of AuNPs.</div></div>","PeriodicalId":420,"journal":{"name":"Results in Chemistry","volume":"18 ","pages":"Article 102859"},"PeriodicalIF":4.2,"publicationDate":"2025-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145462831","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-11-01DOI: 10.1016/j.rechem.2025.102770
Roya Mirzajani, Fatemeh Kardani, Ghazal Rezaie
This study investigated the phytochemical composition and bioactive properties of soybean (Glycine max) seeds. The research was conducted in three parts. In the first part, different extraction methods Soxhlet, ultrasonic-assisted, and maceration were compared. The results demonstrated that the Soxhlet method yielded the highest extraction efficiency for flavonols, carbohydrates, and DPPH radical scavenging activity, whereas ultrasonic-assisted extraction and maceration provided higher flavonoid and protein contents, respectively. Both Soxhlet and ultrasonic methods exhibited greater phenolic and oil contents compared to maceration, though no significant difference was observed between them. In the second part, the anticancer properties of the extracts were evaluated, focusing on the A549 lung cancer cell line. The Soxhlet extract demonstrated the highest anticancer activity, with an IC50 of 113.5 μg/mL. These findings highlight the influence of extraction methods on the bioactive properties of soybean seed biomass.
{"title":"Comparative evaluation of soybean (Glycine max) seed extraction methods: Antioxidant potential and cytotoxic effects on cancer cells","authors":"Roya Mirzajani, Fatemeh Kardani, Ghazal Rezaie","doi":"10.1016/j.rechem.2025.102770","DOIUrl":"10.1016/j.rechem.2025.102770","url":null,"abstract":"<div><div>This study investigated the phytochemical composition and bioactive properties of soybean (<em>Glycine</em> max) seeds. The research was conducted in three parts. In the first part, different extraction methods Soxhlet, ultrasonic-assisted, and maceration were compared. The results demonstrated that the Soxhlet method yielded the highest extraction efficiency for flavonols, carbohydrates, and DPPH radical scavenging activity, whereas ultrasonic-assisted extraction and maceration provided higher flavonoid and protein contents, respectively. Both Soxhlet and ultrasonic methods exhibited greater phenolic and oil contents compared to maceration, though no significant difference was observed between them. In the second part, the anticancer properties of the extracts were evaluated, focusing on the A549 lung cancer cell line. The Soxhlet extract demonstrated the highest anticancer activity, with an IC50 of 113.5 μg/mL. These findings highlight the influence of extraction methods on the bioactive properties of soybean seed biomass.</div></div>","PeriodicalId":420,"journal":{"name":"Results in Chemistry","volume":"18 ","pages":"Article 102770"},"PeriodicalIF":4.2,"publicationDate":"2025-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145516336","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-11-01DOI: 10.1016/j.rechem.2025.102880
Muhammad Umar Munir , Faiz Mahmood , Nimra Zafar , Subbulakshmi Ganesan , Subhashree Ray , Mursaleen Shahid , Anorgul I. Ashirova , Mirjalol Ismoilov Ruziboy ugli
This study presents the strategic development and synthesis of a CuS-integrated MXene composite anode tailored for lithium-ion battery (LIB) applications. This composite architecture is specifically designed to address key challenges such as the inherently poor electrical conductivity of copper sulfide and the propensity of Ti3C2TX (MXene) layers to restack, which can hinder electrochemical performance. The composite was manufactured by a simple hydrothermal technique, yielding a well-integrated heterostructure in which uniformly distributed CuS nanoparticles are anchored onto the few-layered MXene sheets. This architecture fosters efficient electron transport, accelerates lithium-ion diffusion, and provides structural integrity to buffer the volume changes of CuS during repeated charge–discharge cycles. Comprehensive structural and surface characterizations reveal strong interfacial bonding, a mesoporous morphology, and enlarged electroactive surface area features that collectively enhance redox kinetics and interfacial charge transfer. Electrochemical tests show a remarkable initial discharge capacity of approximately 1890 mAh·g−1 at a current density (CD) of 1000 mA g−1 while maintaining a remarkable capacity of about 830 mAh·g−1 even when evaluated at an elevated CD of 5000 mA g−1. Additionally, the composite retains 90.6 % of its capacity after 500 cycles, showcasing excellent long-term cycling stability and outperforming commercial graphite anodes under identical conditions. These findings highlight the strong cooperative effect between CuS and MXene and position the CuS/MXene hybrid as a highly capable material for lithium-ion energy storage systems (ESS) with high power in the future.
本研究提出了针对锂离子电池（LIB）应用量身定制的cu集成MXene复合阳极的战略开发和合成。这种复合结构是专门为解决硫化铜固有的导电性差和Ti3C2TX （MXene）层重新堆叠的倾向等关键挑战而设计的，这些问题可能会影响电化学性能。该复合材料是通过简单的水热技术制备的，产生了一种集成良好的异质结构，其中均匀分布的cu纳米颗粒固定在少量层状的MXene薄片上。这种结构促进了有效的电子传递，加速了锂离子的扩散，并提供了结构完整性来缓冲重复充放电循环过程中cu的体积变化。综合的结构和表面表征揭示了强大的界面键合，介孔形态和扩大的电活性表面积特征，这些特征共同增强了氧化还原动力学和界面电荷转移。电化学测试表明，当电流密度（CD）为1000 mA g - 1时，其初始放电容量约为1890 mAh·g - 1，而当电流密度（CD）提高到5000 mA g - 1时，其放电容量仍保持在830 mAh·g - 1左右。此外，该复合材料在500次循环后仍保持90.6%的容量，表现出出色的长期循环稳定性，在相同条件下优于商用石墨阳极。这些发现突出了cu和MXene之间强大的协同效应，并将cu /MXene混合材料定位为未来大功率锂离子储能系统（ESS）的高性能材料。
{"title":"Synthesis and electrochemical performance of CuS nanocrystal/MXene composite anodes for high-performance lithium-ion batteries","authors":"Muhammad Umar Munir , Faiz Mahmood , Nimra Zafar , Subbulakshmi Ganesan , Subhashree Ray , Mursaleen Shahid , Anorgul I. Ashirova , Mirjalol Ismoilov Ruziboy ugli","doi":"10.1016/j.rechem.2025.102880","DOIUrl":"10.1016/j.rechem.2025.102880","url":null,"abstract":"<div><div>This study presents the strategic development and synthesis of a CuS-integrated MXene composite anode tailored for lithium-ion battery (LIB) applications. This composite architecture is specifically designed to address key challenges such as the inherently poor electrical conductivity of copper sulfide and the propensity of Ti<sub>3</sub>C<sub>2</sub>T<sub>X</sub> (MXene) layers to restack, which can hinder electrochemical performance. The composite was manufactured by a simple hydrothermal technique, yielding a well-integrated heterostructure in which uniformly distributed CuS nanoparticles are anchored onto the few-layered MXene sheets. This architecture fosters efficient electron transport, accelerates lithium-ion diffusion, and provides structural integrity to buffer the volume changes of CuS during repeated charge–discharge cycles. Comprehensive structural and surface characterizations reveal strong interfacial bonding, a mesoporous morphology, and enlarged electroactive surface area features that collectively enhance redox kinetics and interfacial charge transfer. Electrochemical tests show a remarkable initial discharge capacity of approximately 1890 mAh·g<sup>−1</sup> at a current density (CD) of 1000 mA g<sup>−1</sup> while maintaining a remarkable capacity of about 830 mAh·g<sup>−1</sup> even when evaluated at an elevated CD of 5000 mA g<sup>−1</sup>. Additionally, the composite retains 90.6 % of its capacity after 500 cycles, showcasing excellent long-term cycling stability and outperforming commercial graphite anodes under identical conditions. These findings highlight the strong cooperative effect between CuS and MXene and position the CuS/MXene hybrid as a highly capable material for lithium-ion energy storage systems (ESS) with high power in the future.</div></div>","PeriodicalId":420,"journal":{"name":"Results in Chemistry","volume":"18 ","pages":"Article 102880"},"PeriodicalIF":4.2,"publicationDate":"2025-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145516987","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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