ChemistrySelect最新文献_第6页

Synthesis, Characterization, and Electrochemical Applications of a New Lawsone Molecule: Potentiometric Determination of Cr(III) Ions with Low Detection Limit

IF 1.9 4区化学

ChemistrySelect Pub Date : 2025-03-28 DOI: 10.1002/slct.202500746

Oguz Özbek, Mehmet Emin Cakmak, Kıymet Berkil Akar, Ömer Isildak

引用次数: 0

Cover Picture: (ChemistrySelect 13/2025)

IF 1.9 4区化学

ChemistrySelect Pub Date : 2025-03-28 DOI: 10.1002/slct.202581301

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RETRACTION: Phosphorylated κ-Carrageenan-Facilitated Chitosan Nanovehicle for Sustainable Anti-Tuberculosis Multi Drug Delivery

IF 1.9 4区化学

ChemistrySelect Pub Date : 2025-03-28 DOI: 10.1002/slct.202501670

{"title":"RETRACTION: Phosphorylated κ-Carrageenan-Facilitated Chitosan Nanovehicle for Sustainable Anti-Tuberculosis Multi Drug Delivery","authors":"","doi":"10.1002/slct.202501670","DOIUrl":"https://doi.org/10.1002/slct.202501670","url":null,"abstract":"RETRACTION: R. A. Praphakar, A. A. Alarfaj, M. A. Munusamy, V. N. A. Dusthackeer, S. K. Subbiah, and M. Rajan, “Phosphorylated κ-Carrageenan-Facilitated Chitosan Nanovehicle for Sustainable Anti-Tuberculosis Multi Drug Delivery,” ChemistrySelect 2, no. 24 (2017): 7100–7107, https://doi.org/10.1002/slct.201701396.The above article, published online on 22 August 2017 in Wiley Online Library (wileyonlinelibrary.com), and its correction (https://doi.org/10.1002/slct.202004729) have been retracted by agreement between the journal Editor-in-Chief, Preeti Vashi; the publishing Chemistry Europe societies; and Wiley-VCH GmbH.The retraction has been agreed following an investigation based on allegations that the results were fabricated, which were raised by a third party after publication of the Correction. The experimental data provided by the authors was not comprehensive and contained additional inconsistencies. The authors were not able to provide a satisfactory explanation. Accordingly, the conclusions of this manuscript have to be considered insufficiently supported.Madurai Kamaraj University did not respond to requests by Wiley to investigate. The authors disagree with the decision to retract.","PeriodicalId":146,"journal":{"name":"ChemistrySelect","volume":"10 13","pages":""},"PeriodicalIF":1.9,"publicationDate":"2025-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/slct.202501670","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143717341","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Efficient Synthesis of Spirooxindole-Pyrrolo[1,2-a]Pyrazin-2-ones via Ionic Liquid-Ultrasonication

IF 1.9 4区化学

ChemistrySelect Pub Date : 2025-03-28 DOI: 10.1002/slct.202405095

Meeniga Indira, Dr. Peddiahgari Vasu Govardhana Reddy

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CuO/Cu-MOF for Electrocatalytic CO Reduction to Acetate and Ethanol

IF 1.9 4区化学

ChemistrySelect Pub Date : 2025-03-28 DOI: 10.1002/slct.202405152

Yaping Liu, Yuting Sheng, Jian Jiang, Jian Song, Jingwei Li, Shaomin Zhu, Li Yan, Yunjie Ding

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An Expedient Flow Chemistry Approach to Substituted 1,4-Dimethylcarbazoles

IF 1.9 4区化学

ChemistrySelect Pub Date : 2025-03-28 DOI: 10.1002/slct.202500249

Dr. Jennifer R Baker, Michael Hamilton, Dr. Cecilia C. Russell, Dr. Nicholas S O'Brien, Dr. Fiona M. Deane, Louis E Matheson, Prof. Adam McCluskey

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Structural, Morphological, and Optical Characteristics of RF Sputtered Silicon Nitride: Role of Film Thickness and Post-Annealing Temperature

IF 1.9 4区化学

ChemistrySelect Pub Date : 2025-03-28 DOI: 10.1002/slct.202404474

Kalpana Chhoker, Dr. Divya Gupta, Dr. Umesh Kumar Dwivedi, Dr. Rahul Singhal, Prof. Sanjeev Aggarwal

{"title":"Structural, Morphological, and Optical Characteristics of RF Sputtered Silicon Nitride: Role of Film Thickness and Post-Annealing Temperature","authors":"Kalpana Chhoker, Dr. Divya Gupta, Dr. Umesh Kumar Dwivedi, Dr. Rahul Singhal, Prof. Sanjeev Aggarwal","doi":"10.1002/slct.202404474","DOIUrl":"https://doi.org/10.1002/slct.202404474","url":null,"abstract":"Silicon nitride (Si3N4) films are valued for their exceptional properties, making them a key focus in industrial and scientific research. Si3N4 films of thicknesses 200,400, 600 nm are deposited on Si substrate using radio-frequency (RF) sputtering and then annealed for one hour at temperatures of 1000 & 1200 °C in nitrogen atmosphere. The alterations in structural, morphological and optical characteristics are assessed. Raman Spectroscopy reveals nonlinear variation in Full width at half maximum (FWHM) of the Si3N4 peaks with annealing temperature and thickness reflecting changes in crystallinity of films. AFM analysis shows nonlinear roughness and particle size behavior with annealing temperature while linear trend with thickness. Field emission scanning electron microscopy (FESEM) reveals the uniformity of all films. Spectroscopic Ellipsometry (SE) reveals that refractive index shows a similar trend as FWHM with annealing temperatures and increases with an increase in film thickness. Films shows multiple optical energy gaps which may be attributed to the introduction of defects related states. Photoluminescence (PL) study confirms the presence of these defect related states in films. These findings underscore the tunability of Si3N4 film properties through precise control of annealing temperature and thickness, making them highly adaptable for wide applications including optoelectronics and protective coatings.","PeriodicalId":146,"journal":{"name":"ChemistrySelect","volume":"10 13","pages":""},"PeriodicalIF":1.9,"publicationDate":"2025-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143717380","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Facile Synthesis of Highly Active and Ultrastable Palladium Catalysts for Formaldehyde Oxidation

IF 1.9 4区化学

ChemistrySelect Pub Date : 2025-03-28 DOI: 10.1002/slct.202405669

Fen Wang, Zhongao Zhang, Jianjun Shi, Kai Zhang

{"title":"Facile Synthesis of Highly Active and Ultrastable Palladium Catalysts for Formaldehyde Oxidation","authors":"Fen Wang, Zhongao Zhang, Jianjun Shi, Kai Zhang","doi":"10.1002/slct.202405669","DOIUrl":"https://doi.org/10.1002/slct.202405669","url":null,"abstract":"Formaldehyde (HCHO), a common pollutant in industrial productions and indoor environments, poses health risks to humans. Thermal catalytic oxidation has been regarded as an effective approach to eliminate formaldehyde pollution due to its environmental benefits and operational convenience. In this study, a Pd-based catalyst with high dispersion of Pd was prepared by a facile impregnation method and choosing the appropriate calcination temperature of MgFe2O4 support, which demonstrated excellent activity and robustness during a long term test of 60 h conducted at 30 °C and WHSV of 30,000 mL/(g-h). A comprehensive set of characterizations, such as N2 physisorption, CO chemisorption, STEM, XRD, XPS, H2-TPR, O2-TPD, and CO2-TPD, were employed. The results revealed that the outstanding catalytic activity and stability resulted from the high dispersion of Pd, good oxygen mobility, strong antioxidant capacity of Pd, the low CO2 desorption temperature, and high CO2 desorption amount at low temperature. This study presents a palladium catalyst with significant industrial application potential in formaldehyde removal.","PeriodicalId":146,"journal":{"name":"ChemistrySelect","volume":"10 13","pages":""},"PeriodicalIF":1.9,"publicationDate":"2025-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143717418","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Evaluation of the Inhibitory Potential of Platinum(II) Curcumin Complex on Aβ (1–42) Peptide Aggregation: Insights from Simulation at 310 K

IF 1.9 4区化学

ChemistrySelect Pub Date : 2025-03-28 DOI: 10.1002/slct.202402892

Zeinab Rohani Sarvestani, Dr. Majid Hashemi, Prof. Mohammad Hadi Ghatee, Dr. Maryam Bahrami, Dr. Leila Sakhtemanian

{"title":"Evaluation of the Inhibitory Potential of Platinum(II) Curcumin Complex on Aβ (1–42) Peptide Aggregation: Insights from Simulation at 310 K","authors":"Zeinab Rohani Sarvestani, Dr. Majid Hashemi, Prof. Mohammad Hadi Ghatee, Dr. Maryam Bahrami, Dr. Leila Sakhtemanian","doi":"10.1002/slct.202402892","DOIUrl":"https://doi.org/10.1002/slct.202402892","url":null,"abstract":"Aberrant protein folding and amyloid aggregation is known as the main mechanism of fibrillation in amyloidosis diseases such as Alzheimer's disease. In this study, using computational techniques, we investigated the inhibitory effects of a platinum(II) curcumin complex on Aβ aggregation. Docking calculations showed that platinum(II) curcumin is a better binder to Aβ oligomer than curcumin itself. The molecular dynamics (MD) simulation was conducted to evaluate the possibility of the destabilization effect of platinum(II) curcumin on Aβ oligomers. The diversion of RMSD, RMSF, MSD, potential energy, and SASA trends indicate Aβ fibril instability in the presence of platinum(II) curcumin complex. The notable decline in the number of hydrogen bonds, salt bridges, and β-sheet content results in the conformational changes in the Aβ fibril structure and the reduction of its neurotoxicity. We believe that our results could help to elucidate the mechanisms of the antiaggregation effects of platinum(II) curcumin complex and provide a ground base for experimental antiaggregation research on this compound.","PeriodicalId":146,"journal":{"name":"ChemistrySelect","volume":"10 13","pages":""},"PeriodicalIF":1.9,"publicationDate":"2025-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143717420","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Role of Surface Functional Groups in Reactive Species Generation at the Water-Solid Interface Under Contact Electrification

IF 1.9 4区化学

ChemistrySelect Pub Date : 2025-03-26 DOI: 10.1002/slct.202500098

Qingyuan Song, Xinlei Tao, Ying Liang, Yunjun Mei, Dr. Fengjie Chen, Dr. Mengxi Cao, Prof. Pu Wang, Prof. Bolei Chen, Prof. Yawei Wang

{"title":"Role of Surface Functional Groups in Reactive Species Generation at the Water-Solid Interface Under Contact Electrification","authors":"Qingyuan Song, Xinlei Tao, Ying Liang, Yunjun Mei, Dr. Fengjie Chen, Dr. Mengxi Cao, Prof. Pu Wang, Prof. Bolei Chen, Prof. Yawei Wang","doi":"10.1002/slct.202500098","DOIUrl":"https://doi.org/10.1002/slct.202500098","url":null,"abstract":"Water-solid contact electrification (CE) is a common physical phenomenon. The electron transfer during water-solid CE can mediate the redox reactions at the interface, however, the effect of different surface functional groups on this physicochemical process and its mechanism are limited in understanding. Here, we have regulated the redox reactions caused by CE between water and florine-doped tin oxide (FTO) with various functional groups, as well as their electron transfer processes during the contact. It is revealed that the -COOH FTO sample has a larger work function than the no functional group FTO and -OH FTO samples and can easily accept electrons to promote electron transfer from water-solid heterojunctions in CE by density functional calculation. The nitrate reduction and nitrite oxidation experiments showed that the redox capacity of the water – FTO heterojunction with -COOH is much more than that of the water – FTO heterojunction with -OH or fewer functional groups in the CE process. The redox capacity of the water-FTO CE originates from reduction and oxidation species, which was confirmed by the electron transfer and active species detection analysis. These findings deepen our understanding of the correlation between surface functional groups and redox capacity in the CE process.","PeriodicalId":146,"journal":{"name":"ChemistrySelect","volume":"10 12","pages":""},"PeriodicalIF":1.9,"publicationDate":"2025-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143707594","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0