Journal of The Chinese Chemical Society最新文献_第4页

Contents and Masthead: Journal of the Chinese Chemical Society 02/2025 目录及刊头：《中国化学会学报》第02/2025期

IF 1.6 4区化学

Journal of The Chinese Chemical Society Pub Date : 2025-02-12 DOI: 10.1002/jccs.1994

引用次数: 0

How simple models explain complex protein folding behaviors 简单的模型如何解释复杂的蛋白质折叠行为

IF 1.6 4区化学

Journal of The Chinese Chemical Society Pub Date : 2025-02-11 DOI: 10.1002/jccs.202400396

Min-Yeh Tsai

{"title":"How simple models explain complex protein folding behaviors","authors":"Min-Yeh Tsai","doi":"10.1002/jccs.202400396","DOIUrl":"https://doi.org/10.1002/jccs.202400396","url":null,"abstract":"Understanding complex protein folding behaviors requires simplified models that capture the essential features of the folding process. Protein folding involves a delicate interplay between short-range (secondary) and long-range (tertiary) interactions, which together dictate the thermodynamic and kinetic properties of the system. In this study, we employ a mean-field framework to investigate these interactions using three progressively refined models. The regular model considers only short-range, nearest-neighbor interactions and reveals a cooperative folding transition driven by localized secondary interactions, consistent with standard two-state folding behavior. The Bryngelson–Wolynes (BW) model incorporates stochastic nonlocal interactions, demonstrating long-range cooperativity and introducing energy landscape ruggedness that shifts the folding transition. The modified Bryngelson–Wolynes (M-BW) model integrates both short-range and long-range effects, leading to the emergence of a hysteresis loop characteristic of first-order-like phase transitions, even in finite systems. These results suggest that the interplay between secondary and tertiary interactions is sufficient to induce phase transition-like properties in proteins. By providing a unified framework, this study highlights how simplified models can elucidate the complex dynamics of protein folding, misfolding, and aggregation, offering critical insights into the underlying mechanisms of these fundamental biological processes.","PeriodicalId":17262,"journal":{"name":"Journal of The Chinese Chemical Society","volume":"72 3","pages":"247-256"},"PeriodicalIF":1.6,"publicationDate":"2025-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143688708","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

A comprehensive review on photocatalytic degradation of agro-organochlorine pollutants using multifunctional metal oxide and supported and doped metal oxide nanoarchitecture materials 多功能金属氧化物及负载和掺杂金属氧化物纳米结构材料光催化降解农业有机氯污染物的研究进展

IF 1.6 4区化学

Journal of The Chinese Chemical Society Pub Date : 2025-02-10 DOI: 10.1002/jccs.202400307

Stephen Sunday Emmanuel, Hamza Badamasi, Saheed O. Sanni, Odunayo T. Ore, Ajibola A. Bayode, Ademidun Adeola Adesibikan

{"title":"A comprehensive review on photocatalytic degradation of agro-organochlorine pollutants using multifunctional metal oxide and supported and doped metal oxide nanoarchitecture materials","authors":"Stephen Sunday Emmanuel, Hamza Badamasi, Saheed O. Sanni, Odunayo T. Ore, Ajibola A. Bayode, Ademidun Adeola Adesibikan","doi":"10.1002/jccs.202400307","DOIUrl":"https://doi.org/10.1002/jccs.202400307","url":null,"abstract":"The environment and public health are seriously threatened by the rising incidence of organochlorine pollutants (OCPs) in aquatic environments. In response, photocatalytic degradation has emerged as a viable and sustainable method for getting rid of these dangerous contaminants. This study offers a thorough examination of the most recent developments in photocatalytic degradation approaches, with a specific focus on multifunctional metal oxide nanoparticles (MONPs). Through a critical appraisal of relevant literature, the review elucidates the underlying mechanisms involved in the photocatalytic degradation of OCPs and evaluates the performance of various metal oxide nanoarchitecture materials. The review also includes an in-depth exploration of the regenerability and recyclability of spent MONPs. Future research directions in the area of circular economy and cost analysis were also provided to help upcoming researchers. In conclusion, this review consolidates the current knowledge on the photocatalytic degradation of emerging OCPs, providing valuable insights into the application of MOPs, and contributing to the development of sustainable and efficient strategies for mitigating the environmental damage of OCPs to aid the actualization of Sustainable Development Goals 3, 6, and 14.","PeriodicalId":17262,"journal":{"name":"Journal of The Chinese Chemical Society","volume":"72 3","pages":"265-305"},"PeriodicalIF":1.6,"publicationDate":"2025-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143688868","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

An ultrasensitive chemosensor based on Pb(II) complex of a xanthene ligand as an easily commercially available dye for the detection of cysteine in biological samples 一种基于铅（II）配合物的超灵敏化学传感器，它是一种易于商用的染料，用于检测生物样品中的半胱氨酸

IF 1.6 4区化学

Journal of The Chinese Chemical Society Pub Date : 2025-01-29 DOI: 10.1002/jccs.202400291

Mehdi Moalemian, Hossein Tavallali, Fereydoon Khazali, Mina Hosseini

{"title":"An ultrasensitive chemosensor based on Pb(II) complex of a xanthene ligand as an easily commercially available dye for the detection of cysteine in biological samples","authors":"Mehdi Moalemian, Hossein Tavallali, Fereydoon Khazali, Mina Hosseini","doi":"10.1002/jccs.202400291","DOIUrl":"https://doi.org/10.1002/jccs.202400291","url":null,"abstract":"In this study, an ultra-sensitive colorimetric chemosensor was designed and built for the identification and determination of Pb2+ and cysteine (Cys) by optical color variation based on indicator displacement evaluation (IDA) using xanthine, bromopyrogallol red (BPR) dye. Label exchange between BPR and Cys occurred when Cys was added to the lead(II) complex (BPR), resulting in a clear and immediate color variation from red to purple in a DMSO/MES buffer (10.0 mmol/L, pH 5.5 (1:4 v/v)). The suggested method shows a detection limit of 5.0 nmol/L and a good linear range of 0.04–4.71 μmol/L for cysteine. Moreover, based on the produced absorbance and color variation, this chemosensor is suggested as an “IMPLICATION” logic gate discussing Pb2+ and cysteine as input. As an application in molecular devices, based on such a fast and repeatable signal, a molecular-scale sequential memory unit has been designed to exhibit “keypad lock” behavior. The expanded receptor provides satisfactory reproducibility, good precision, and is used for selective determination of Cys in human blood plasma and urine. In addition, the procedure's precision was compared with the results of the suggested procedure with the HPLC method.","PeriodicalId":17262,"journal":{"name":"Journal of The Chinese Chemical Society","volume":"72 3","pages":"333-347"},"PeriodicalIF":1.6,"publicationDate":"2025-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143690263","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

Porous carbon from ZnCl2-activated biomass: Catalytic performance and structural insights in ORR ZnCl2 活性生物质多孔碳：ORR 催化性能和结构见解

IF 1.6 4区化学

Journal of The Chinese Chemical Society Pub Date : 2025-01-20 DOI: 10.1002/jccs.202400334

Salman Khan, Zhen Yang, Shouhua Yang, Ying Tang, Xuhong Guo, Feng Yu

{"title":"Porous carbon from ZnCl2-activated biomass: Catalytic performance and structural insights in ORR","authors":"Salman Khan, Zhen Yang, Shouhua Yang, Ying Tang, Xuhong Guo, Feng Yu","doi":"10.1002/jccs.202400334","DOIUrl":"https://doi.org/10.1002/jccs.202400334","url":null,"abstract":"The advancement of metal-air battery and fuel cell technologies depends on finding out of oxygen reduction reaction (ORR) catalysts with higher efficiency. The RH-900/ZnCl2 catalyst, which is activated by ZnCl2 and produced from biomass, shows superior ORR activity compared with commercial Pt/C catalysts, with half-wave potentials of 0.89 V. Nanoparticles of ZnO and SiO2 as well as nitrogen doping, combined with the porous carbon structure, produce this improved performance. The combination enhances the ORR's active site density and enhances electron transfer efficiency. Function groups that facilitate proton transfer and structural stability are shown by Raman spectroscopy and Fourier transform infrared studies, which also show an excellent combination of ordered graphitic and disordered carbon structures and BET analysis confirms a high porous surface area of 1134.82 m2/g. Important for enhancing conductivity and catalytic activity, XPS studies reveal the existence of silicon, oxygen, zinc, and nitrogen species. FE-SEM and HRTEM analyses reveal a carbon matrix that is extremely porous and contains ZnO and SiO2 nanoparticles that are uniformly distributed. Based on the results of the electrochemical tests, RH-900/ZnCl2 is the best ORR catalyst easily accessible with superior stability and resistance to methanol poisoning compared with RH-900 and commercial Pt/C catalysts. These features placed RH-900/ZnCl2 unique as a potential long-term replacement for standard Pt-based catalysts in ORR applications within energy conversion and storage devices.","PeriodicalId":17262,"journal":{"name":"Journal of The Chinese Chemical Society","volume":"72 3","pages":"306-316"},"PeriodicalIF":1.6,"publicationDate":"2025-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143689142","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

Cover: Journal of the Chinese Chemical Society 01/2025 封面：《中国化学会学报》2025年第1期

IF 1.6 4区化学

Journal of The Chinese Chemical Society Pub Date : 2025-01-18 DOI: 10.1002/jccs.1990

引用次数: 0

Preview: Journal of the Chinese Chemical Society 01/2025 《中国化学会学报》2025年第1期

IF 1.6 4区化学

Journal of The Chinese Chemical Society Pub Date : 2025-01-18 DOI: 10.1002/jccs.202501001

引用次数: 0

Contents and Masthead: Journal of the Chinese Chemical Society 01/2025 目录及刊头：《中国化学会学报》第1/2025期

IF 1.6 4区化学

Journal of The Chinese Chemical Society Pub Date : 2025-01-18 DOI: 10.1002/jccs.1991

引用次数: 0

Molecularly imprinted polyaniline-modified electrode for quantitative detection of acetaminophen 分子印迹聚苯胺修饰电极定量检测对乙酰氨基酚

IF 1.6 4区化学

Journal of The Chinese Chemical Society Pub Date : 2025-01-16 DOI: 10.1002/jccs.202400280

Alireza Ahmadi, Mohammad Masoudi Farid, Sourena Masoumzadeh Khalkhali, Farideh Piri

{"title":"Molecularly imprinted polyaniline-modified electrode for quantitative detection of acetaminophen","authors":"Alireza Ahmadi, Mohammad Masoudi Farid, Sourena Masoumzadeh Khalkhali, Farideh Piri","doi":"10.1002/jccs.202400280","DOIUrl":"https://doi.org/10.1002/jccs.202400280","url":null,"abstract":"In this work, a voltammetry sensor was prepared using the general molecularly imprinted polymer (MIP) method based on polyaniline for detection of acetaminophen (ACT). The polyaniline molecularly imprinted polymer was made by electropolymerization of aniline in the presence of acetaminophen as a template using power supply, and then acetaminophen was separated from the polymer by solvent extraction method. Different concentrations of ACT were detected using cyclic voltammetry (CV) in water-ethanol solution, and a calibration curve with a limit of detection (LOD) and limit of quantification (LOQ) of 0.43 and 1.42 ppm, respectively, was reported along with a linear equation. The sensor showed a linear range between 5 and 40 ppm for acetaminophen detection. To investigate the selectivity of the reported sensor, a copper electrode was used to detect ACT and an ibuprofen solution was used as analyte for detection by the ACT-MIP sensor. Additionally, the nonimprinted polymer (NIP) did not show any significant peak in the presence of ACT. This sensor was able to detect acetaminophen dissolved in a real urine sample successfully. This novel sensor is prepared from polyaniline, which is a conductive polymer, and no other reinforcements are needed for the sensor's conductivity in the presence of template molecule, which in this paper is acetaminophen.","PeriodicalId":17262,"journal":{"name":"Journal of The Chinese Chemical Society","volume":"72 2","pages":"229-236"},"PeriodicalIF":1.6,"publicationDate":"2025-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143389117","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

Removal of malachite green dye by adsorption onto chitosan-montmorillonite nanocomposite: Kinetic, thermodynamic and equilibrium studies 壳聚糖-蒙脱土纳米复合材料对孔雀石绿染料的吸附：动力学、热力学和平衡研究

IF 1.6 4区化学

Journal of The Chinese Chemical Society Pub Date : 2025-01-13 DOI: 10.1002/jccs.202400331

Mert Çetin, Yeliz Ozudogru

{"title":"Removal of malachite green dye by adsorption onto chitosan-montmorillonite nanocomposite: Kinetic, thermodynamic and equilibrium studies","authors":"Mert Çetin, Yeliz Ozudogru","doi":"10.1002/jccs.202400331","DOIUrl":"https://doi.org/10.1002/jccs.202400331","url":null,"abstract":"In this study, the efficiencies of chitosan, montmorillonite, and chitosan/montmorillonite composites in various ratios for the removal of malachite green dye from aqueous solutions were investigated, and their maximum adsorption capacities were compared, and the effects of factors such as composite concentration, pH, contact time, dye concentration, and temperature were examined. Recovery attempts using different chemicals were also performed. Adsorption was analyzed using Langmuir and Freundlich isotherm models, and thermodynamic analyses were conducted. Fourier-transform infrared (FTIR) and scanning electron microscopy (SEM) analyses were used to investigate surface changes. The highest adsorption capacity was found for the 20% chitosan/montmorillonite composite (400 mg g−1). Temperature studies indicated a decrease in adsorption capacity with increasing temperature. Kinetic studies observed that the data fit the pseudo-second-order kinetic model better. In recovery attempts, more than 95% recovery was achieved with HNO3 and HCl. FTIR results showed that chitosan–montmorillonite interactions involved -NH, -OH, C=O, and C-O bonds, while dye binding was mainly through OH bonds. SEM analysis revealed that montmorillonite reduced surface cracks and roughness, creating a more homogeneous structure, and more rough areas appeared after dye binding. As a result, the chitosan/montmorillonite composite significantly enhanced dye adsorption capacity.","PeriodicalId":17262,"journal":{"name":"Journal of The Chinese Chemical Society","volume":"72 2","pages":"196-210"},"PeriodicalIF":1.6,"publicationDate":"2025-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143389289","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