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Nanoparticles of Carboxymethyl Chitosan Crosslinked and Activated with Terbium Cations: Synthesis and Characterization 铽阳离子交联活化的羧甲基壳聚糖纳米颗粒的合成与表征
IF 0.8 4区 化学
Theoretical and Experimental Chemistry Pub Date : 2026-08-24 DOI: 10.1007/s11237-026-09893-9
O. D. Shchehlov, A. P. Kusyak, R. M. Kravchuk, P. O. Mechyk, P. P. Gorbyk
{"title":"Nanoparticles of Carboxymethyl Chitosan Crosslinked and Activated with Terbium Cations: Synthesis and Characterization","authors":"O. D. Shchehlov,&nbsp;A. P. Kusyak,&nbsp;R. M. Kravchuk,&nbsp;P. O. Mechyk,&nbsp;P. P. Gorbyk","doi":"10.1007/s11237-026-09893-9","DOIUrl":"10.1007/s11237-026-09893-9","url":null,"abstract":"<p>Nanosized biocompatible UV (X-ray) luminescent carboxymethylated chitosan, cross-linked and activated with terbium cations, has been obtained and characterized by IR and NMR spectroscopies, UV and X-ray luminescence, and TEM. The material can be used for the development of new bioimaging systems, targeted drug delivery, and release under X-ray irradiation.</p>","PeriodicalId":796,"journal":{"name":"Theoretical and Experimental Chemistry","volume":"62 1","pages":"34 - 41"},"PeriodicalIF":0.8,"publicationDate":"2026-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148859769","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
Singlet Oxygen: Selective Heterogeneous Photocatalytic Oxidation of Organic Compounds: A Review 单线态氧：有机化合物的选择性非均相光催化氧化研究进展
IF 0.8 4区 化学
Theoretical and Experimental Chemistry Pub Date : 2026-08-24 DOI: 10.1007/s11237-026-09892-w
S. Ya. Kuchmiy
{"title":"Singlet Oxygen: Selective Heterogeneous Photocatalytic Oxidation of Organic Compounds: A Review","authors":"S. Ya. Kuchmiy","doi":"10.1007/s11237-026-09892-w","DOIUrl":"10.1007/s11237-026-09892-w","url":null,"abstract":"<p>The current state of research on heterogeneous photocatalytic systems for selective oxidative transformations of organic compounds of various classes with a singlet oxygen is analyzed. The main physicochemical characteristics of <sup>1</sup>O<sub>2</sub>, as well as the mechanisms of its generation and detection, are presented. The processes of selective photocatalytic oxidation of saturated and unsaturated organic compounds, alcohols, aldehydes, organic acids, sulfides, and amines in systems involving solid-state photoactive materials of various nature, in particular organic photosensitizers on porous supports, inorganic semiconductors, covalent organic frameworks, coordination polymers, etc. are considered. Possible directions for further research in this field are outlined.</p>","PeriodicalId":796,"journal":{"name":"Theoretical and Experimental Chemistry","volume":"62 1","pages":"1 - 33"},"PeriodicalIF":0.8,"publicationDate":"2026-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148859768","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
Structure and Morphology of Electrospun Polycaprolactone Fibers Loaded with Silver Nanoparticles Formed in the Presence of β-Cyclodextrin β-环糊精存在下负载银纳米粒子的电纺丝聚己内酯纤维的结构和形态
IF 0.8 4区 化学
Theoretical and Experimental Chemistry Pub Date : 2026-08-19 DOI: 10.1007/s11237-026-09894-8
S. V. Riabov, L. V. Kobrina, V. V. Boiko, S. M. Kobylinskyi, M. G. Monastyretskyi, A. A. Tymoshyk, I. V. Fesych, D. O. Klymchuk
{"title":"Structure and Morphology of Electrospun Polycaprolactone Fibers Loaded with Silver Nanoparticles Formed in the Presence of β-Cyclodextrin","authors":"S. V. Riabov,&nbsp;L. V. Kobrina,&nbsp;V. V. Boiko,&nbsp;S. M. Kobylinskyi,&nbsp;M. G. Monastyretskyi,&nbsp;A. A. Tymoshyk,&nbsp;I. V. Fesych,&nbsp;D. O. Klymchuk","doi":"10.1007/s11237-026-09894-8","DOIUrl":"10.1007/s11237-026-09894-8","url":null,"abstract":"<p>Polymer microfibres (polymer mats) based on polycaprolactone and filled with metallic silver nanoparticles were obtained by electrospinning. Ascorbic acid was used as a reducing agent for Ag<sup>+</sup> ions, either individually or in combination with the naturally occurring macrocyclic compound β-cyclodextrin (β-CD), which also stabilizes for Ag<sup>0</sup> nanoparticles. The presence of Ag<sup>0</sup> nanoparticles in the fibres was confirmed by UV spectroscopy, X-ray phase analysis method, and transmission electron microscopy. It has been shown that the use of β-CD during the reduction of Ag<sup>+</sup> ions allows smaller silver crystallites to be obtained, while also resulting in decreased thermal stability of the material. This material can be used for the development of biocompatible composites with an antibacterial activity for a medical applications.</p>","PeriodicalId":796,"journal":{"name":"Theoretical and Experimental Chemistry","volume":"62 1","pages":"42 - 51"},"PeriodicalIF":0.8,"publicationDate":"2026-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148859771","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
Antioxidant and Antimicrobal Properties of Nanosized ZnO Obtained at Presence of Neem Leaf Extract 印楝叶提取物制备纳米氧化锌的抗氧化和抗菌性能
IF 0.8 4区 化学
Theoretical and Experimental Chemistry Pub Date : 2026-08-19 DOI: 10.1007/s11237-026-09897-5
F. R. Al-Behadili, M. J. Hezam, H. A. Abd Ali
{"title":"Antioxidant and Antimicrobal Properties of Nanosized ZnO Obtained at Presence of Neem Leaf Extract","authors":"F. R. Al-Behadili,&nbsp;M. J. Hezam,&nbsp;H. A. Abd Ali","doi":"10.1007/s11237-026-09897-5","DOIUrl":"10.1007/s11237-026-09897-5","url":null,"abstract":"<p>Zinc oxide nanoparticles (NPs) with an average crystallite size of 22 nm and a bandgap energy of 3.26 eV have been obtained using neem (Azadirachta indica) leaf extract as a natural green stabilizing agent. Significant reduction of 2,2-diphenyl-1-picrylhydrazyl (DPPH) quantity by ZnO NPs in dark has been found in the result of DPPH scavenging studies. This effect is explained by reductive action of the compounds from neem extract, immobilized on ZnO NPs, and it is an indicator of their antioxidant activity. It is shown that ZnO NPs demonstrate strong antimicrobial activity against Staphylococcus aureus, Escherichia coli and Candida albicans.</p>","PeriodicalId":796,"journal":{"name":"Theoretical and Experimental Chemistry","volume":"62 1","pages":"67 - 76"},"PeriodicalIF":0.8,"publicationDate":"2026-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148859773","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
Co2-Mediated Oxidative Dehydrogenation of n-Butane on Ni-Mo-Al Oxide Catalysts Ni-Mo-Al氧化物催化剂上co2介导的正丁烷氧化脱氢反应
IF 0.8 4区 化学
Theoretical and Experimental Chemistry Pub Date : 2026-08-15 DOI: 10.1007/s11237-026-09895-7
O. V. Zikrata, O. P. Pertko, O. V. Larina, S. O. Soloviev
{"title":"Co2-Mediated Oxidative Dehydrogenation of n-Butane on Ni-Mo-Al Oxide Catalysts","authors":"O. V. Zikrata,&nbsp;O. P. Pertko,&nbsp;O. V. Larina,&nbsp;S. O. Soloviev","doi":"10.1007/s11237-026-09895-7","DOIUrl":"10.1007/s11237-026-09895-7","url":null,"abstract":"<p>The influence of the preparation method (impregnation of γ-Al<sub>2</sub>O<sub>3</sub> vs. sol–gel method) on the physicochemical and catalytic properties of Ni-Mo-Al oxide systems in the CO<sub>2</sub>-mediated oxidative dehydrogenation of n-butane into C<sub>4</sub> alkenes/dienes has been analyzed. It is shown that the catalyst obtained by a sol–gel method is characterized by a prevalence of the crystalline Al<sub>2</sub>(MoO<sub>4</sub>)<sub>3</sub> phase in the composition and a lower acidity/basicity ratio. These features ensure higher selectivity and specific productivity toward the target buta-1,3-diene.</p>","PeriodicalId":796,"journal":{"name":"Theoretical and Experimental Chemistry","volume":"62 1","pages":"52 - 59"},"PeriodicalIF":0.8,"publicationDate":"2026-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148859770","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
Effect of Polarity and Fraction of Organic Solvent on Interface Catalytic Benzoylation of α-Amino Acids 有机溶剂极性和分数对α-氨基酸界面催化苯甲酰化反应的影响
IF 0.8 4区 化学
Theoretical and Experimental Chemistry Pub Date : 2026-08-13 DOI: 10.1007/s11237-026-09896-6
V. M. Anishchenko, A. M. Redko, O. M. Dykun, H. V. Anishchenko, V. I. Rybachenko
{"title":"Effect of Polarity and Fraction of Organic Solvent on Interface Catalytic Benzoylation of α-Amino Acids","authors":"V. M. Anishchenko,&nbsp;A. M. Redko,&nbsp;O. M. Dykun,&nbsp;H. V. Anishchenko,&nbsp;V. I. Rybachenko","doi":"10.1007/s11237-026-09896-6","DOIUrl":"10.1007/s11237-026-09896-6","url":null,"abstract":"<p>The effect of the polarity and volume fraction of organic solvents (n-heptane, isopropylacetate, ethylacetate, dichloromethane, and 1,2-dichloroethane) on the catalytic benzoylation of alanine, serine, and glutamic acid in a water–organic solvent two-phase system in the presence of pyridine N-oxide derivatives has been studied. It is found that the reaction occurs in a kinetic region, the effective rate constants increase with increasing solvent polarity. The possibility of replacing chlorine-containing solvents with ethyl acetate and isopropyl acetate was demonstrated, resulting in only a minor decrease in reaction rate (~10%) without a significant reduction in product yield.</p>","PeriodicalId":796,"journal":{"name":"Theoretical and Experimental Chemistry","volume":"62 1","pages":"60 - 66"},"PeriodicalIF":0.8,"publicationDate":"2026-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148859772","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
Photodegradation of Polycyclic Aromatic Hydrocarbons on Floating Composites Perlite-TiO2 and Perlite-TiO2/Ag perite - tio2和perite - tio2 /Ag漂浮复合材料光降解多环芳烃的研究
IF 0.8 4区 化学
Theoretical and Experimental Chemistry Pub Date : 2026-07-09 DOI: 10.1007/s11237-026-09885-9
A. R. Timonina, O. M. Lytvynova, M. O. Puzhaichereda, I. B. Shcherbakov, O. V. Hryshyna, V. M. Baumer, A. M. Shaposhnyk, P. V. Mateychenko, K. N. Belikov
{"title":"Photodegradation of Polycyclic Aromatic Hydrocarbons on Floating Composites Perlite-TiO2 and Perlite-TiO2/Ag","authors":"A. R. Timonina,&nbsp;O. M. Lytvynova,&nbsp;M. O. Puzhaichereda,&nbsp;I. B. Shcherbakov,&nbsp;O. V. Hryshyna,&nbsp;V. M. Baumer,&nbsp;A. M. Shaposhnyk,&nbsp;P. V. Mateychenko,&nbsp;K. N. Belikov","doi":"10.1007/s11237-026-09885-9","DOIUrl":"10.1007/s11237-026-09885-9","url":null,"abstract":"<p>Floating perlite-TiO<sub>2</sub> and perlite-TiO<sub>2</sub>/Ag composites have been obtained and their photocatalytic performance in the photodegradation of polycyclic aromatic hydrocarbons (PAHs), namely anthracene, pyrene, fluoranthene, and benz[a]anthracene, has been investigated. The phase composition and morphology of the samples have been characterized by X-ray diffraction analysis, TEM, and SEM methods. It is shown that the floating perlite-based composites exhibit high photocatalytic activity, providing more than 85% degradation of the studied PAHs under UV irradiation within 180 min.</p>","PeriodicalId":796,"journal":{"name":"Theoretical and Experimental Chemistry","volume":"61 6","pages":"389 - 398"},"PeriodicalIF":0.8,"publicationDate":"2026-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148695410","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
Quantum Chemical Analysis of Electron-Donating Properties of the Active Layer of a Solar Cell Based on the Electrically Conductive Polymer PSBTBT 基于导电聚合物PSBTBT的太阳能电池有源层供电子特性的量子化学分析
IF 0.8 4区 化学
Theoretical and Experimental Chemistry Pub Date : 2026-07-08 DOI: 10.1007/s11237-026-09886-8
O. V. Filonenko, E. M. Demianenko, M. I. Terebinska, O. I. Tkachuk, V. V. Lobanov
{"title":"Quantum Chemical Analysis of Electron-Donating Properties of the Active Layer of a Solar Cell Based on the Electrically Conductive Polymer PSBTBT","authors":"O. V. Filonenko,&nbsp;E. M. Demianenko,&nbsp;M. I. Terebinska,&nbsp;O. I. Tkachuk,&nbsp;V. V. Lobanov","doi":"10.1007/s11237-026-09886-8","DOIUrl":"10.1007/s11237-026-09886-8","url":null,"abstract":"<p>The equilibrium geometry and electronic structure of oligomers modeling the polymer poly[2,6-(4,4′-bis(2-ethylhexyl)dithieno[3,2-b:2′,3′-d]silole)-alt-4,7-(2,1,3-benzothiadiazole)] (PSBTBT) with several monomeric units ranging from 1 to 10 have been calculated using density functional theory (B3LYP/6-31G**). The computational results indicate that, for the investigation of materials used in organic solar cells (including determination of frontier molecular orbital energies, exciton dissociation energies, etc.), large polymer systems can be substituted by studying their lower oligomer analogues.</p>","PeriodicalId":796,"journal":{"name":"Theoretical and Experimental Chemistry","volume":"61 6","pages":"399 - 403"},"PeriodicalIF":0.8,"publicationDate":"2026-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148695686","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
Two-Stage Formation of Photosensitive Semiconductive CuI Films on SnO2 Substrate 在SnO2衬底上两阶段形成光敏半导体CuI薄膜
IF 0.8 4区 化学
Theoretical and Experimental Chemistry Pub Date : 2026-07-08 DOI: 10.1007/s11237-026-09884-w
S. S. Fomanyuk, V. O. Smilyk, I. A. Rusetsky, M. O. Danilov, G. Ya. Kolbasov
{"title":"Two-Stage Formation of Photosensitive Semiconductive CuI Films on SnO2 Substrate","authors":"S. S. Fomanyuk,&nbsp;V. O. Smilyk,&nbsp;I. A. Rusetsky,&nbsp;M. O. Danilov,&nbsp;G. Ya. Kolbasov","doi":"10.1007/s11237-026-09884-w","DOIUrl":"10.1007/s11237-026-09884-w","url":null,"abstract":"<p>A Cu<sub>2</sub>O layer was formed on a SnO<sub>2</sub> substrate by electrochemical deposition from an alkaline citrate electrolyte. This layer was then treated with hydroiodic acid solution to form a film consisting of γ-CuI crystals with size of 70-90 nm. It is shown that CuI in the film behaves a <i>p</i>-type semiconductor, which photosensitive in the 300-420 nm range and exhibits a maximum photocurrent at potential <i>E</i> = –0.33 V vs. silver chloride electrode. The developed method for forming CuI films can be used to determine concentration of copper ions in the initial electrolyte</p>","PeriodicalId":796,"journal":{"name":"Theoretical and Experimental Chemistry","volume":"61 6","pages":"381 - 388"},"PeriodicalIF":0.8,"publicationDate":"2026-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148695687","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
Stability of Activity of Gallium- and Zinc-Containing Zeolite Catalysts in the Process of Propane Oxidative Dehydrogenation with CO2 含镓和含锌沸石催化剂在丙烷CO2氧化脱氢过程中的活性稳定性
IF 0.8 4区 化学
Theoretical and Experimental Chemistry Pub Date : 2026-07-07 DOI: 10.1007/s11237-026-09888-6
S. M. Orlyk, N. V. Vlasenko, V. I. Chedryk, O. Z. Didenko
{"title":"Stability of Activity of Gallium- and Zinc-Containing Zeolite Catalysts in the Process of Propane Oxidative Dehydrogenation with CO2","authors":"S. M. Orlyk,&nbsp;N. V. Vlasenko,&nbsp;V. I. Chedryk,&nbsp;O. Z. Didenko","doi":"10.1007/s11237-026-09888-6","DOIUrl":"10.1007/s11237-026-09888-6","url":null,"abstract":"<p>The results of a study on the stability of the activity and selectivity of Ga- and Zn-containing catalysts based on BEA zeolite in the oxidative dehydrogenation of propane with CO<sub>2</sub> have been analyzed. According to X-ray diffraction, nitrogen adsorption/desorption, and Raman spectroscopy data, the observed changes in catalytic activity and selectivity over 10 h of operation are attributed to surface carbonization involving Brønsted acid sites. The catalytic activity is restored after regeneration in a temperature-programmed oxidation mode (20% O<sub>2</sub> + 80% He, 650°C).</p>","PeriodicalId":796,"journal":{"name":"Theoretical and Experimental Chemistry","volume":"61 6","pages":"414 - 422"},"PeriodicalIF":0.8,"publicationDate":"2026-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148695467","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
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