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Corrosion of metals and alloys is a critical challenge across various industries, leading to substantial financial losses and safety risks. The use of corrosion inhibitors has proven to be an effective strategy in mitigating this issue. This review provides a comprehensive overview of the latest advancements in the use of macrocyclic compounds and pharmacological drugs as corrosion inhibitors. These compounds exhibit unique chemical structures and functional groups, which enhance their ability to improve corrosion resistance through adsorption onto metal surfaces, thereby reducing oxidation and electrochemical reactions. The review highlights the effectiveness of these inhibitors in diverse corrosive environments and their compatibility with different metals and alloys, including steel, aluminum, and copper. Key findings reveal their superior performance in creating protective barriers and their potential for offering more sustainable, eco-friendly solutions compared to conventional inhibitors. This review emphasizes their inhibitory effects, investigates their underlying mechanisms, and underscores the importance of ongoing research and innovation to maximize their use as effective and sustainable corrosion prevention techniques.

The reaction of 7-phenylbenzo[a]phenazine-5(7H)-one (rosindone) with one equivalent of a nitrating mixture (conc. H₂SO₄/HNO₃) produced 6-nitro-7-phenylbenzo[a]phenazine-5(7H)-one (NROS), as confirmed by ¹H NMR spectroscopy. The selectivity of the reaction is assigned to an electronic effect. The attempted sulphonation of rosindone with chlorosulfonic acid produced the chlorinated derivative 6-chloro-7-phenylbenzo[a]phenazine-5(7H)-one (CLROS), instead but in low yield. The nitro group of NROS was reduced with SnCl₂ to produce a blue solid identified as 6-amino-7-phenylbenzo[a]phenazine-5(7H)-one (AMROS). The X-ray crystal structure confirmed the positioning of the amino group α to the carbonyl group. The reaction of rosindone with one equivalent of lithium trimethylsilylacetylide underwent a Michael addition to introduce the nucleophile β to the carbonyl group. The compound 6a-ethynyl-6a,7-dihydrobenzo[a]phenazine-5(6H)-one (rac-ACROS) was identified by an X-ray crystal structure determination. Coupling of rac-ACROS under standard Glazer conditions produced the dyad of the compound linked via the two ethynyl subunits. A different N-phenyl group was readily introduced into the rosindone basic structure by the reaction of methyl 2-((2-aminophenyl)amino)benzoate with 2-hydroxy-1,4-naphthoquinone to produce methyl 2-(5-oxobenzo[a]phenazine-7(5H)-yl)benzoate (MROS).

The green EDAS–(CuO–Ag) nanocomposite was synthesized using Syzygium cumini seed extract. S. cumini seed extract act as a reducing as well as stabilizing agent. The synthesized nanocomposites were characterized using different techniques such as UV–vis, FT-IR, XRD, HRTEM, BET, and XPS. Photocatalytic activity was examined by subjecting it to UV light irradiation conditions and measuring its performance in degradation methylene blue. Additionally, the antibacterial activity of nanocomposite was assessed against Gram-positive and Gram-negative bacteria. The results revealed that the photocatalytic and antibacterial activities are in following order: CuO < CuO–Ag < EDAS–(CuO–Ag).

The chemical constituent's antioxidant potential and acute toxicity of aqueous extracts of roots of Ferula communis L. were determined. UHPLC–MS/MS was used to identify compounds in the extract. Antioxidant properties were investigated in vitro. Acute toxicity was examined during oral dosing of Swiss albino mice with 200, 300, or 400 mg/Kg. The use of molecular docking determined drug similarity. The main constituents in the root extract of F. communis were luteolin (21.48%), vanillic acid (10.98%), and kaempferol (24.57%). Extracts of F. communis contained flavonoids and polyphenols (0.820 ± 0.031 mg equiv Q/mg and 0.194 ± 0.04 mg equiv AG/mg, respectively). The aqueous root extract exhibited significant antioxidative capacity based on the DPPH (2,2-diphenyl-1-picrylhydrazyl) method with an IC₅₀ = 0.820 ± 0.031 mg/mL) or ABTS (2,2′-azinobis-(3-ethylbenzthiazolin-6-sulfonic acid) with an IC₅₀ = 15.65 ± 1.21 mg/mL, and molybdenum (474 ± 6 mg equiv Vit C/mg). This result was consistent with results of docking analysis that showed that F. communis also had stable intermolecular interactions, expected to have a potent antioxidant effect. Extracts of roots caused no toxicity to mice during acute exposures. Results of the docking study and ADMET pharmacokinetic predictions demonstrated the safety of the primary plant compounds under investigation, specifically luteolin (C8).

Selenium is a well-known element that can be toxic and potentially harmful in excessive amounts. In this study, the microwave-assisted synthesis of selenium nanoparticles (SeNP) was achieved using glucose as a green reductant, resulting in reduced toxicity. This method provides a rapid, cost-effective, and environmentally friendly alternative to traditional SeNP synthesis techniques. The antioxidant activity of the SeNPs was assessed using the 2,2-diphenyl-1-picrylhydrazyl (DPPH) assay, while their antibacterial properties were tested against both Gram-positive (E. coli) and Gram-negative (S. aureus) bacteria using the agar diffusion method. Additionally, the cytotoxicity of SeNPs towards the Beas2B cell line was evaluated using the MTT viability assay at various concentrations. Results produced confirm the successful synthesis of SeNPs with notable antioxidant and antibacterial properties through a simple and economical approach, indicating potential applications in various fields.

https://doi.org/10.1002/slct.202401485

Several references in the original article were cited wrongly, that is, [161] instead of [160], [169] instead of [168], up to [213] instead of [212]. In addition, three references need to be replaced for the appropriate citations with the following:

[133] J. Zou, H. Duan, Y. Chen, S. Ji, J. Cao, H. Ma, Compos. B Eng. 2020, 199, 108228.

[160] C. Hamciuc, T. V. Bubulac, D. Serbezeanu, I.D. Carja, E. Hamciuc, G. Lisa, V. F. Pérez, RSC Adv. 2016, 6, 22764-76.

[170] J. Sun, X. Wang, D. Wu, ACS Appl. Mater. Interfaces. 2012, 4, 4047.

We are very sorry for the inconvenience caused by these errors and thank the reader who brought this to our attention.

e202200724

ChemistrySelect 2022, 7

https://doi.org/10.1002/slct.202200724

In this article, Figure 1 and Supporting Information Figure S1 include nonoriginal scanning electron micrograph images that were used had errors. The correct images are shown herein. These images are new, original, and accurately represent the originally reported findings.

To ensure accuracy and integrity, the entire analysis was repeated. These errors do not influence the overall data and scientific conclusions of the article. The image captions and all related details remain unchanged, as the corrected images serve the same purpose as those originally published.

This study presents a comparative study on architecture-dependent electrochemical properties of anodes made from aluminum particles and aluminum foil for lithium-ion batteries (LIBs) application. The purity and other physicochemical features were analyzed by X-ray diffraction (XRD), energy-dispersive X-ray spectroscopy (EDX), and scanning electron microscopy (SEM) methods. The electrochemical characteristics were determined by cycling voltammetry (CV) and galvanostatic charge/discharge (GCD) tests. The obtained results demonstrated that, due to the architecture nature of aluminum foil, the aluminum foil electrode had better conductivity and higher nucleation overpotential compared to the aluminum particles electrode, which involved other components such as PVDF as binder and carbon super P as conductive agent. Thus, the CV curves of the aluminum foil electrode showed sharper redox peaks with higher peak intensity. In addition, the aluminum foil electrode provided significantly higher initial capacity than that of the aluminum particles electrode. However, the architecture of the foil anode rendered it extremely prone to volume expansion during cycling, resulting in a fast and complete capacity fading just after 13 cycles. The anode made from aluminum particles, in contrast, witnessed slower capacity decay and ultimately stabilized at approximately 50 mAh g⁻¹ for extending cycles.

Researchers are exploring sustainable methods for synthesizing metal oxide nanoparticles to address wastewater pollution, which poses a global threat to aquatic life and human health. The present research aims to biosynthesize recyclable Lemon peel-extracted copper oxide nanoparticles (CuO NPs) to remove methylene blue dye via adsorption. Our approach involves a comprehensive range of techniques, such as FTIR, XRD, SEM-EDX, Zeta potential, and UV-VIS, to thoroughly characterize the NPs. SEM analysis confirmed that the CuO NPs, with an average size of 64.5 nm and a nearly spherical shape, exhibited a zeta potential value of – 16.34, indicating their relative stability. Optimized conditions for the 92.20% adsorption efficiency for methylene blue dye were pH at 6, contact time of 90 min, 0.06 g of adsorbent dose, 10  ppm dye conc., and Temp. 27 °C. Langmuir 1-based maximum adsorption capacity (qm) was 617.28 mg/g for CuO NPs. Langmuir 1 and Freundlich are the most suitable isotherm models for experimental data, supporting Physi-chemisorption and chemisorption as rate-limiting steps in the exothermic adsorption process. A reusability study of up to three cycles proved the sustainability of the materials.

This study explores novel ligands that potentially offer superior binding and stability compared to the peptidic molecules currently associated with the ribosomal RNA–protein complex. This study aims to elucidate the molecular mechanisms underlying protein–RNA interactions and their disruptions, identify potential therapeutic targets, and explore novel compounds capable of modulating these interactions for therapeutic benefit. We conducted molecular docking and dynamics simulations using advanced computational tools such as rDock and REINVENT4 to generate novel compounds. ADMET analysis confirmed the chosen compound's advantageous pharmacokinetic attributes and safety profiles. Among the generated compounds, C21, C23, C56, C120, and C195 were identified as the best candidate molecules for inhibiting protein–RNA interactions. These ligands demonstrated superior binding affinity and stability, outperforming the peptidic molecules bound to the reference protein–RNA–peptide complex structure.The ligand molecules were notable for their ability to settle into low–energy states, indicating a strong potential to outperform the peptide bound in the reference protein–RNA–peptide complex structure. These findings highlight the capability of these ligands to serve as more effective therapeutic agents and as superior alternatives to the current peptidic molecules, with implications for developing novel therapeutic strategies targeting protein–RNA interactions.