Current physical chemistry最新文献

{"title":"The Dynamic Impact of Synthetic Dyes on the Physicochemical Parameters of Cationic and Anionic Surfactants","authors":"Nisar Ahmad Malik, Ishrat Fatma, Mohd Azharuddin, Hilal Ahmad, Syed Lubna, Musharaf Ashraf","doi":"10.2174/0118779468336057240919162508","DOIUrl":"https://doi.org/10.2174/0118779468336057240919162508","url":null,"abstract":"Introduction: The interaction of dyes (crystal violet, malachite green, and congo red) with cationic (cetrimide) and anionic surfactants (sodium dodecyl sulfate) in the aqueous medium were studied via conductometric and UV-visible spectroscopy. Methods: The critical micelle concentration (CMC) of both cetrimide and SDS upsurges in all the selected dyes on increasing the temperature. Thermodynamic parameters like change in Gibb’s free energy of micellization (Δ G°m ), change in enthalpy of micellization (Δ H°m ) as well as change in entropy of micellization (Δ S°m ) were calculated by employing mass action model. Results: The Δ S°m values obtained are positive with Δ G°m and Δ H°m values being negative signified that the phenomenon of micellization is spontaneous as well as exothermic in nature. Moreover, the more negative Δ H°m in water as well as in the presence of dyes signify the presence of electrostatic forces of attraction between the oppositively charged dyes and surfactant moieties. UV-spectroscopy reveals that spectral changes occur because of the interaction of surfactants with dye molecules. Conclusion: By analyzing shifts in absorption peaks, changes in intensity, and alterations in band shape, insights into the nature of surfactant-dye complexes and their potential applications in various industries can be assessed. This understanding can help in the design and optimization of products and processes involving surfactants and dyes.","PeriodicalId":89671,"journal":{"name":"Current physical chemistry","volume":"15 1","pages":"43-56"},"PeriodicalIF":0.0,"publicationDate":"2024-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147890869","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}

{"title":"Spectrophotometric Determination of Curcumin using\u00003-Methyl-2-benzothiazolinone Hydrazone Hydrochloride Hydrate\u0000as Electrophilic Coupling Agent","authors":"Syeda Ayesha","doi":"10.2174/0118779468312580240712045328","DOIUrl":"https://doi.org/10.2174/0118779468312580240712045328","url":null,"abstract":"\u0000\u0000Nutraceuticals are products derived from food sources that provide extra health benefits in addition to the basic nutritional value found in foods. Spectrophotometric methods for the determination of curcumin were developed, which are\u0000simple, sensitive, selective, rapid, and reliable.\u0000\u0000\u0000\u0000The methods are based on the reduction of iron (III) to iron (II) by 3-Methyl-2-\u0000benzothiazolinone hydrazone hydrochloride hydrate (MBTH), which is an electrophilic\u0000coupling agent and subsequent reaction with curcumin in mild hydrochloric acid medium.\u0000Spectrophotometric methods for the determination of curcumin were developed, which\u0000are simple, sensitive, selective, rapid, and reliable. The methods are based on the reduction of iron (III) to iron (II) by 3-Methyl-2-benzothiazolinone hydrazone hydrochloride hydrate (MBTH), which is an electrophilic coupling agent and subsequent reaction\u0000with curcumin in mild hydrochloric acid medium.\u0000\u0000\u0000\u0000The reaction produces a bluish–green complex with maximum absorbance at 670\u0000nm. The colour complex can be extracted into chloroform. The methods obey Beer’s law\u0000in the range 0.3-7.0 and 0.2-7.0 (µg mL-1\u0000).\u0000\u0000\u0000\u000010 common anions and cations were added, and the method was tested, and\u0000no interference was observed. The proposed methods offered the advantages of having\u0000good reproducibility and were satisfactorily worked out to estimate the amount of curcumin in various turmeric samples.\u0000","PeriodicalId":89671,"journal":{"name":"Current physical chemistry","volume":"21 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141807916","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}

{"title":"Investigation of the Effects of Different Phases of TiO2 Nanoparticles on PVA Membranes","authors":"Akanksha Mehto, Jyotsna Chauhan, V. R. Mehto","doi":"10.2174/0118779468312436240627074337","DOIUrl":"https://doi.org/10.2174/0118779468312436240627074337","url":null,"abstract":"\u0000\u0000PVA/TiO2 nanocomposite membranes are prepared by solution\u0000casting technique where different phases of TiO2 nanoparticles like brookite, brookiterutile\u0000and rutile are dispersed in PVA matrix. Sol-gel method was employed to prepare\u0000TiO2 nanoparticles, while different phases of TiO2 have been obtained by controlling the\u0000calcination temperature.\u0000\u0000\u0000\u0000PVA/TiO2 nanocomposite membranes were characterized by XRD, FTIR,\u0000AFM, TEM, UV-visible and PL techniques. XRD results confirmed the presence of different\u0000phases of TiO2, exhibiting 3.3 nm, 8.4 nm, and 35.7 nm mean crystalline size. The\u0000XRD studies also confirmed that TiO2 nanoparticles became properly dispersed to the\u0000PVA matrix, leading to increased PVA crystallinity after doping of different phases of\u0000TiO2 nanoparticles. UV-visible analysis revealed an increase in absorption intensity and\u0000peak position shifts slightly towards longer wavelengths, which indicates that nanofillers\u0000tuned the band gap of PVA. The doping of the TiO2 (brookite) phase in the PVA matrix\u0000results in a decreased in PL intensity.\u0000\u0000\u0000\u0000PVA/TiO2 nanocomposite membrane prepared by solution casting technique where different phases of TiO2 nanoparticles like brookite, brookite-rutile and rutile dispersed in PVA matrix. Sol-gel method was employed to prepare TiO2 nanoparticles while different phases of TiO2 have been obtained by controlling the calcination temperature. PVA/TiO2 nanocomposite membrane was characterized by XRD, FTIR, AFM, TEM UV-Visible and PL techniques.\u0000\u0000\u0000\u0000This suggests that the PVA/TiO2 (brookite) membrane exhibits a greater degree\u0000of photocatalytic activity in comparison to the other two composites. According to the\u0000FTIR investigation, the hydroxyl (OH) groups present in PVA interact with the dopants\u0000Ti+ ions via intra- and intermolecular hydrogen bonds to produce charge transfer complexes\u0000(CTC). The AFM study shows surface roughness details for PVA and PVA/TiO2\u0000composite membranes. The average grain size of TiO2 nanoparticles calculated from\u0000TEM images is in good agreement with the grain size calculated by XRD.\u0000\u0000\u0000\u0000By adjusting the phase of TiO2 nanoparticles into PVA matrix, composites\u0000can be developed that are optimized for a variety of applications such as water purification,\u0000UV protection, self-cleaning surfaces, lithium-ion batteries, and optoelectronic devices.\u0000","PeriodicalId":89671,"journal":{"name":"Current physical chemistry","volume":" 83","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141825593","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}

{"title":"Thermo-Gravimetric Studies and Specific Heat Capacity Estimations of the Products of Biginelli Reaction using TGA-DSC","authors":"K. C. Sawant, C. Sarode, Y. V. Marathe, G. R. Gupta, S. A. Dhanmane","doi":"10.2174/0118779468284583240528075819","DOIUrl":"https://doi.org/10.2174/0118779468284583240528075819","url":null,"abstract":"\u0000\u0000In this work, the thermal behavior and specific heat capacities of nine\u0000derivatives which were obtained via Biginellipyrimidone synthesis reaction have been\u0000experimentally determined using thermal gravimetry analysis and differential scanning\u0000calorimetry, and the obtained results have been thoroughly analyzed and discussed. The\u0000influence of the structural variation on the thermal analysis has been discussed along with\u0000the influence of the structure of the derivatives of pyrimidines on the specific heat capacity.\u0000\u0000\u0000\u0000To date, heterocycles have successfully been switched from synthetic organic\u0000chemistry laboratory to the core of a variety of biomolecules, conducting devices\u0000and so on. Derivatives of 2-hydroxypyrimidine or pyrimidines have a wide window of\u0000pharmaceutical applications. Therefore, attempts have been made to understand the\u0000thermal response of these organic frameworks.\u0000\u0000\u0000\u0000The main objective of this study was to explore thermal methods to understand\u0000heat-induced structural interactions as well as the specific heat capacity (Cp) as a\u0000function of temperature for the synthesized derivatives of 2-hydroxy pyrimidine or pyrimidones.\u0000\u0000\u0000\u0000Room temperature condensation of ethyl acetoacetate, urea, and variety of aldehydes\u0000or ketones has been optimized in ionic liquids for the formation of pyrimidones.\u0000Thereafter, the thermal profiles of the synthesized derivatives of pyrimidines have been\u0000studied thoroughly and the thermal response of the synthesized derivatives of pyrimidones\u0000gives sound information about thermal stability of these heterocycles.\u0000\u0000\u0000\u0000In the present work, the effect of substituents on the thermal behavior of the\u0000synthesized derivatives of pyrimidines has been investigated with the help of TGA-DSC\u0000analysis. Specific heat capacity (Cp) data as a function of temperature for the synthesized\u0000derivatives of pyrimidones have been reported for the first time.\u0000\u0000\u0000\u0000The specific heat capacity data of the molecules of high commercial and biological\u0000relevance such as pyrimidines like organic frameworks play a subtle role in the\u0000development of the computational methods and molecular modelling, to comprehend the\u0000fundamentals of these molecular frameworks and effectively explore the pharmaceutical\u0000as well as materialistic potentials of these heterocyclic frameworks via simulation.\u0000","PeriodicalId":89671,"journal":{"name":"Current physical chemistry","volume":" 12","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141373239","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}

{"title":"pH-Sensitive Polymers with their Important Applications (A\u0000Review)","authors":"Chintan R. Madhu, Bharat H. Patel","doi":"10.2174/0118779468296209240427102827","DOIUrl":"https://doi.org/10.2174/0118779468296209240427102827","url":null,"abstract":"\u0000\u0000Materials that modify their chemical or physical characteristics in reaction to\u0000diverse stimuli, such as moisture, heat, water, or pH, are commonly known as smart materials\u0000or stimuli-responsive polymers. Typical applications for these polymers include catalysis,\u0000finishing, and coating processes. Tissue engineering, drug delivery, and gene\u0000transportation are additional applications that have emerged in the past two decades. As a\u0000result, their potential use extends to a wider range of applications, encompassing chemical\u0000processes, drug delivery, body-site targeting, separation, membrane activity, sensing and\u0000actuation, and agriculture. Recently, pH-responsive polymers have garnered considerable\u0000interest for implementation in membrane and 4D printing. The current review work encompasses\u0000previously published research through 2022, with a particular focus on the\u0000critical application of pH-sensitive polymers.\u0000","PeriodicalId":89671,"journal":{"name":"Current physical chemistry","volume":"34 11","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141120562","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}

{"title":"Ionic Liquid-Based Green Solvents for Extraction and Purification\u0000of Natural Plant Products","authors":"Neha Aggarwal","doi":"10.2174/0118779468304352240423084047","DOIUrl":"https://doi.org/10.2174/0118779468304352240423084047","url":null,"abstract":"\u0000\u0000This research paper explores the environmental sustainability of\u0000ionic liquid-based green solvents in the extraction and purification of natural plant products, with a focus on their entire life cycle. The objectives of the study were to assess the\u0000environmental impact of ionic liquid synthesis, energy consumption, water usage, emissions, recycling rates, policy effects, and stakeholder perceptions.\u0000\u0000\u0000\u0000Methodologically, we conducted a comprehensive Life Cycle Assessment (LCA) that involved primary data collection through field surveys and interviews with key stakeholders in the ionic\u0000liquid production and usage industry across various regions in India. The data were analyzed using specialized LCA software tools to quantify environmental impacts. Key findings include the identification of synthesis as a major contributor to environmental impact, emphasizing the need for greener synthesis methods.\u0000\u0000\u0000\u0000The study revealed the\u0000significant carbon footprint, energy consumption, and water usage during production,\u0000highlighting opportunities for improvement. Emissions data underscored the importance\u0000of emission control measures, particularly for greenhouse gases and volatile organic\u0000compounds. Recycling and reuse were identified as environmentally friendly disposal\u0000methods. Policy compliance varied among stakeholders, indicating room for stricter regulations. Stakeholder perceptions varied, with researchers having the most positive outlook. Implications of the findings extend to sustainable chemistry practices, emphasizing\u0000interdisciplinary collaboration and the importance of considering the entire life cycle of\u0000chemical processes.\u0000\u0000\u0000\u0000This research contributes to a deeper understanding of\u0000green solvents and provides a foundation for promoting sustainable practices in industrial\u0000processes in India and globally\u0000","PeriodicalId":89671,"journal":{"name":"Current physical chemistry","volume":" 76","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140991034","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}

{"title":"Modulation of Solid-state Thermal Reaction of Iron(III)Citrate by a\u0000Co-precursor Studied using Thermogravimetry: Evaluation of Kinetic and\u0000Thermodynamic Parameters and Nucleation Rate","authors":"Sani Kundu, Manisha Chakraborty, Ashis Bhattacharjee","doi":"10.2174/0118779468297477240315072636","DOIUrl":"https://doi.org/10.2174/0118779468297477240315072636","url":null,"abstract":"\u0000\u0000Solid state reaction of iron(III)citrate leads to a range of ironbased\u0000oxides by varying the reaction conditions, e.g., the presence of co-precursor. The\u0000influence of reaction conditions on the kinetics of the solid-state reaction of\u0000iron(III)citrate needs to be investigated.\u0000\u0000\u0000\u0000Kinetic analysis of the solid-state reaction of iron(III)citrate in the presence of\u0000a co-precursor has been explored to realize the influences of the co-precursor on the reaction\u0000process as well as decomposed material.\u0000\u0000\u0000\u0000Non-isothermal thermogravimetry profiles are deconvoluted to individual reaction\u0000steps. The model-free kinetic methodology is utilized to estimate step-wise activation\u0000energy and, hence, the reaction mechanism along with the reaction rate. Conversiondependent\u0000thermodynamic parameters and nucleation rate are estimated. XRD analysis\u0000has been used to characterize the decomposed material.\u0000\u0000\u0000\u0000Thermogravimetry profiles obtained for an iron(III)citrate and malonic acid\u0000mixture are deconvoluted into six steps. The decomposed nanomaterial is identified as\u0000magnetite (size 10 nm). The observed reaction mechanisms associated with each step are\u0000different, where the activation/reaction rate is conversion-dependent. A good fit between\u0000the experimental and reverse-constructed conversion profiles is obtained. The nucleation\u0000rate at higher temperatures is affected by both the extent of conversion and the heating\u0000rate. A possible reaction pathway is proposed. The study elucidates the role of malonic\u0000acid as a co-precursor in modifying the thermal reaction of iron(III)citrate and product\u0000formation.\u0000\u0000\u0000\u0000This investigation proposes the applicability of suitable co-precursors as a\u0000potential controlling factor for preparing iron oxides from iron-based compounds.\u0000","PeriodicalId":89671,"journal":{"name":"Current physical chemistry","volume":"75 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140749596","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}

{"title":"Study of Selected Patents on the Manufacture of Activated Carbon\u0000as Electrodes in Power Storage Devices","authors":"Farahat Javed Khan, Sonali Sandeep Kokane","doi":"10.2174/0118779468279377240318035448","DOIUrl":"https://doi.org/10.2174/0118779468279377240318035448","url":null,"abstract":"\u0000\u0000The field of activated carbon has attracted many researchers. Our study of selected\u0000patents on the mentioned subject reveals an interesting fact, such as including the\u0000pore characteristics of the electrode material in the claims of a patent specification. The\u0000parameters, such as power density, energy density, capacitance and charge-recharge cycles,\u0000are mentioned for the various embodiments in the patent specification. The technolegal\u0000aspects of patenting in this field are concerned with the source of the carbon, the active\u0000material with which it is composited or activated, the process of treatment, which includes\u0000time, temperature and method, the resulting energy storage device, and the process\u0000of making such a device.\u0000","PeriodicalId":89671,"journal":{"name":"Current physical chemistry","volume":"118 48","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140370192","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}

{"title":"Residual Moisture Determination in Lyophilized Drug Product\u0000Samples Using FT-NIR: A Comparison of Data Processing\u0000Methods","authors":"R. Burtea, T. Upton, G.M. Jensen, S. Kim, K. Jalkanen","doi":"10.2174/0118779468275339231206062433","DOIUrl":"https://doi.org/10.2174/0118779468275339231206062433","url":null,"abstract":"\u0000\u0000Remdesivir for injection is a Gilead Sciences manufactured drug\u0000product approved by the FDA to treat COVID-19. One of the critical attributes of this drug\u0000product, which is lyophilized, is its water moisture content. The current method used to determine\u0000the water content of remdesivir is the Karl Fischer titration method. The Karl\u0000Fischer method is considered the gold standard for determining the residual water moisture\u0000content of lyophilized drug products in the pharmaceutical industry. However, it is timeconsuming,\u0000can at times be sensitive to difficult-to-control techniques, and most importantly\u0000is destructive. The purpose of this study was to create a non-destructive residual water\u0000moisture determination method using FT-NIR.\u0000\u0000\u0000\u0000Three FT-NIR methods were proposed as a non-destructive alternative to Karl\u0000Fischer method: partial least squares regression, Beer’s law and area under the curve, and\u0000Beer’s law and peak height. Results were statistically validated using RMSEC, RMSEP,\u0000and R2, and the percent differences of predicted and accepted residual moisture values\u0000were compared with external validation vials.\u0000\u0000\u0000\u0000Results showed that the partial least squares regression method produced a 0.999\u0000correlation coefficient and a 95% performance index score, highlighting the accuracy between\u0000the actual Karl Fischer moisture values and the predicted FT-NIR moisture values.\u0000The Beer’s law methods produced acceptable correlation coefficients of 0.996 and 0.982\u0000for the peak area and height, respectively, but comparisons between the actual and predicted\u0000values were not as closely matched as the partial least squares method.\u0000\u0000\u0000\u0000Our results support the use of a non-destructive partial least squares FT-NIRbased\u0000moisture contest method, which is a useful alternative to the destructive Karl Fischer\u0000method for determining residual water moisture of lyophilized drug products. Only an FTNIR\u0000instrument and chemometric statistical software along with the appropriately\u0000trained/educated analysts, and routine Karl Fischer instrumentation to measure/determine\u0000moisture content values of either water spiked or lyo-thieved and normal lyophilized samples\u0000are required.\u0000","PeriodicalId":89671,"journal":{"name":"Current physical chemistry","volume":"30 12","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140086451","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}

{"title":"Kinetic and Mechanistic Pathway of Electron Transfer Reactions:\u0000Pyridine Oxidation by Peroxomonophosphoric Acid in Acidic\u0000Aqueous Medium","authors":"A. Agarwal, A. Meena","doi":"10.2174/0118779468262862231220094220","DOIUrl":"https://doi.org/10.2174/0118779468262862231220094220","url":null,"abstract":"\u0000\u0000The kinetic and mechanistic pathways of pyridine oxidation by peroxomonophosphate has been studied in an acidic aqueous medium. Reactions of peroxomonophosphoric acid are the least exploited kinetically. This reaction has been attempted to understand the role of oxidation of pyridine and the reactivity pattern of peroxomonophosphate.\u0000The reaction has been second-order or first-order concerning the oxidant and substrate,\u0000respectively. The reaction rate showed a decreasing effect with increasing hydrogen ion\u0000concentration. Considering peroxomonophosphate reactions as non-chain reactions and all\u0000the results, a feasible mechanism for the reaction has been suggested. The calculated energy of activation and entropy of activation has been observed conventionally to be 80 ± 5 kJ\u0000mol-1 and – 45 ± 6 JK-1 mol-1\u0000. The oxidation product was pyridine-N-oxide in this reaction.\u0000","PeriodicalId":89671,"journal":{"name":"Current physical chemistry","volume":"78 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140494357","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}