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Influence of Chemical Structure of Fluorinated Surfactants on the Air/Water Interface Properties 含氟表面活性剂的化学结构对空气/水界面性能的影响
IF 1 4区 化学
Theoretical and Experimental Chemistry Pub Date : 2023-05-19 DOI: 10.1007/s11237-023-09767-4
Yuan Xu, Xianwu Jing, Lang Zhou, Yongfan Tang, Yongjun Xiao
{"title":"Influence of Chemical Structure of Fluorinated Surfactants on the Air/Water Interface Properties","authors":"Yuan Xu,&nbsp;Xianwu Jing,&nbsp;Lang Zhou,&nbsp;Yongfan Tang,&nbsp;Yongjun Xiao","doi":"10.1007/s11237-023-09767-4","DOIUrl":"10.1007/s11237-023-09767-4","url":null,"abstract":"<div><div><p>The formation heats for a number of gemini fluorocarbon surfactants have been estimated using density functional theory (DFT), the values of air/water interface formation energies (IFE) have been compared. It is shown that the fluorocarbon surfactants can efficiently reduce the surface tension of the air/water interface. One of the representatives of the surfactants, possessing the highest IFE value (in absolute value), has been prepared and its critical micelle concentration and the corresponding surface tension have been experimentally determined.</p></div></div>","PeriodicalId":796,"journal":{"name":"Theoretical and Experimental Chemistry","volume":"59 1","pages":"66 - 74"},"PeriodicalIF":1.0,"publicationDate":"2023-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4763179","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
Influence of Structure on Lifetime of the Excited State of New Heptamethinecyanines Based on Benzo[cd]Indole 结构对苯并吲哚类新型七甲基青碱激发态寿命的影响
IF 1 4区 化学
Theoretical and Experimental Chemistry Pub Date : 2023-05-19 DOI: 10.1007/s11237-023-09760-x
A. A. Ishchenko, I. V. Kurdyukova, Yu. L. Slominskii, I. P. Sharanov
{"title":"Influence of Structure on Lifetime of the Excited State of New Heptamethinecyanines Based on Benzo[cd]Indole","authors":"A. A. Ishchenko,&nbsp;I. V. Kurdyukova,&nbsp;Yu. L. Slominskii,&nbsp;I. P. Sharanov","doi":"10.1007/s11237-023-09760-x","DOIUrl":"10.1007/s11237-023-09760-x","url":null,"abstract":"<div><div><p>It is shown that new benzo[cd]indole-based heptamethinecyanines (HMCs) have an ultrashort lifetime τ of the photoexcited state and a high intensity of light absorption in the generation range of practically important neodymium lasers. The electronic structure and types of electronic transitions in HMCs are analyzed by the DFT and TD-DFT methods. The influence of vibronic and intermolecular interactions on τ is considered. The advantages of HMCs for passive mode locking of lasers over known dyes with ultrashort τ are demonstrated. The advantages of HMCs to implement passive mode locking of lasers over known dyes with ultrashort τ are demonstrated.</p></div></div>","PeriodicalId":796,"journal":{"name":"Theoretical and Experimental Chemistry","volume":"59 1","pages":"17 - 24"},"PeriodicalIF":1.0,"publicationDate":"2023-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4759526","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 Sn and Zr Content in ZrAl- and SnAl-BEA Hierarchical Zeolites on Their Acidic and Catalytic Properties in the Process of Cyclohexanone Oxidation with Hydrogen Peroxide ZrAl-和SnAl-BEA级沸石中Sn和Zr含量对过氧化氢氧化环己酮酸性和催化性能的影响
IF 1 4区 化学
Theoretical and Experimental Chemistry Pub Date : 2023-05-19 DOI: 10.1007/s11237-023-09765-6
M. M. Kurmach, A. O. Samotoi, S. O. Sotnik, P. S. Yaremov, O. V. Shvets, N. D. Scherban
{"title":"Effect of Sn and Zr Content in ZrAl- and SnAl-BEA Hierarchical Zeolites on Their Acidic and Catalytic Properties in the Process of Cyclohexanone Oxidation with Hydrogen Peroxide","authors":"M. M. Kurmach,&nbsp;A. O. Samotoi,&nbsp;S. O. Sotnik,&nbsp;P. S. Yaremov,&nbsp;O. V. Shvets,&nbsp;N. D. Scherban","doi":"10.1007/s11237-023-09765-6","DOIUrl":"10.1007/s11237-023-09765-6","url":null,"abstract":"<div><div><p>Series of ZrAl- and SnAl-silicate hierarchical zeolites of the BEA structural type have been synthesized by hydrothermall method, and their acidic and catalytic properties in the reaction of cyclohexanone oxidation with hydrogen peroxide have been investigated. For SnAl-BEA zeolites, the conversion of cyclohexanone into ε-caprolactone increases as the tin content in the samples increases in the range of 0.83-2.5 mole%Sn and the concentration of Lewis acid sites increases, while for ZrAl-BEA zeolites, the maximum value of conversion (80%) is achieved for the sample with 1.33 mole % Zr.</p></div></div>","PeriodicalId":796,"journal":{"name":"Theoretical and Experimental Chemistry","volume":"59 1","pages":"51 - 58"},"PeriodicalIF":1.0,"publicationDate":"2023-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"5061839","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 Modifying Additives of Molybdenum and Tungsten Compounds on the Catalytic Properties of MgO-Al2O3 in the Process of Gas-Phase Conversion of Ethanol Into 1-Butanol 钼钨化合物改性添加剂对MgO-Al2O3气相转化乙醇制1-丁醇催化性能的影响
IF 1 4区 化学
Theoretical and Experimental Chemistry Pub Date : 2023-05-19 DOI: 10.1007/s11237-023-09764-7
K. V. Valihura, O. V. Larina, S. O. Soloviev
{"title":"Effect of Modifying Additives of Molybdenum and Tungsten Compounds on the Catalytic Properties of MgO-Al2O3 in the Process of Gas-Phase Conversion of Ethanol Into 1-Butanol","authors":"K. V. Valihura,&nbsp;O. V. Larina,&nbsp;S. O. Soloviev","doi":"10.1007/s11237-023-09764-7","DOIUrl":"10.1007/s11237-023-09764-7","url":null,"abstract":"<div><div><p>The regulation of redox and acid–base properties of MgO-Al<sub>2</sub>O<sub>3</sub> systems has been carried out during the synthesis by introducing bifunctional additives of molybdate and tungstate ions. Doping with Mo and W compounds leads to an increase in the activity of Mg-Al-oxide catalysts and the selectivity of 1-butanol formation in the ethanol condensation process due to an increase in the concentration of the sites of ethanol dehydrogenation and acetaldehyde aldol condensation.</p></div></div>","PeriodicalId":796,"journal":{"name":"Theoretical and Experimental Chemistry","volume":"59 1","pages":"42 - 50"},"PeriodicalIF":1.0,"publicationDate":"2023-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4763178","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
Catalytic Benzoylation of Alanine in Two-Phase Water–Dichloromethane System 两相水-二氯甲烷体系中丙氨酸的催化苯甲酰化反应
IF 1 4区 化学
Theoretical and Experimental Chemistry Pub Date : 2023-05-19 DOI: 10.1007/s11237-023-09763-8
V. M. Anishchenko, A. M. Redko, O. M. Dykun, V. I. Rybachenko
{"title":"Catalytic Benzoylation of Alanine in Two-Phase Water–Dichloromethane System","authors":"V. M. Anishchenko,&nbsp;A. M. Redko,&nbsp;O. M. Dykun,&nbsp;V. I. Rybachenko","doi":"10.1007/s11237-023-09763-8","DOIUrl":"10.1007/s11237-023-09763-8","url":null,"abstract":"<div><div><p>The inverse phase transfer process of catalytic benzoylation of α-amino acids (on the example of alanine) in a two-phase water–dichloromethane system in the presence of pyridine derivatives as catalysts is investigated. The effect of the initial concentration of alanine, its form in solution, and the initial catalyst concentration on the reaction rate and the composition of the products is studied. It is established that using 4-methyl- and 4-methoxy pyridine N-oxides combined with a double excess of the sodium salt of alanine makes it possible to obtain 2-benzamidopropionic acid with a yield of more than 80%.</p></div></div>","PeriodicalId":796,"journal":{"name":"Theoretical and Experimental Chemistry","volume":"59 1","pages":"38 - 41"},"PeriodicalIF":1.0,"publicationDate":"2023-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4763177","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
Selectivity of Tryptophan and Phenylalanine Adsorption by Activated Coconut Carbon of Medical Assignment 医用活性炭吸附色氨酸和苯丙氨酸的选择性研究
IF 1 4区 化学
Theoretical and Experimental Chemistry Pub Date : 2023-05-19 DOI: 10.1007/s11237-023-09766-5
I. A. Farbun, V. A. Trykhlib
{"title":"Selectivity of Tryptophan and Phenylalanine Adsorption by Activated Coconut Carbon of Medical Assignment","authors":"I. A. Farbun,&nbsp;V. A. Trykhlib","doi":"10.1007/s11237-023-09766-5","DOIUrl":"10.1007/s11237-023-09766-5","url":null,"abstract":"<div><div><p>The adsorption capacity of carbon adsorbent KARBON™ for tryptophan and phenylalanine from the individual solutions, their mixtures, and in the presence of leucine, isoleucine, and valine has been studied. It is established that, at the adsorption from the mixture of these amino acids, the overall removal of tryptophan and phenylalanine is an order of magnitude exceeding the removal of aliphatic analogues. Maximum removals (&gt;90%) of tryptophan and phenylalanine are achieved at concentrations of 2.0-2.8 mmol/L, as the concentrations increase to 20-24 mmol/L, the efficiency of the removal of these amino acids is decreased approximately twice. The obtained data show that the enterofraction of the adsorbent KARBON™ can be used as an alternative to amino acid therapy for various diseases.</p></div></div>","PeriodicalId":796,"journal":{"name":"Theoretical and Experimental Chemistry","volume":"59 1","pages":"59 - 65"},"PeriodicalIF":1.0,"publicationDate":"2023-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4762822","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: 1
Spectral and Luminescence Properties of Mixed-Ligand Eu3+ and Tb3+ Complexes with tris(3-[2′-pyridyl]-pyrazolyl)borate and Carboxylates Containing an N-Salicylideneimine Fragment 三(3-[2 ' -吡啶基]-吡唑基)硼酸盐和含有n -水杨基亚胺片段的羧酸盐混合配体Eu3+和Tb3+配合物的光谱和发光性质
IF 1 4区 化学
Theoretical and Experimental Chemistry Pub Date : 2023-04-04 DOI: 10.1007/s11237-023-09756-7
E. A. Mikhalyova, K. V. Borysova, E. A. Goreshnik, A. W. Addison
{"title":"Spectral and Luminescence Properties of Mixed-Ligand Eu3+ and Tb3+ Complexes with tris(3-[2′-pyridyl]-pyrazolyl)borate and Carboxylates Containing an N-Salicylideneimine Fragment","authors":"E. A. Mikhalyova,&nbsp;K. V. Borysova,&nbsp;E. A. Goreshnik,&nbsp;A. W. Addison","doi":"10.1007/s11237-023-09756-7","DOIUrl":"10.1007/s11237-023-09756-7","url":null,"abstract":"<div><div><p>It has been shown by single crystal X-ray diffraction analysis that the salicylideneimine fragment of Tp<sup>Py</sup>Ln(sch)<sub>2</sub>(H<sub>2</sub>O) (Ln = Eu, Tb; Tp<sup>Py–</sup> = tris(3-[2′-pyridyl]pyrazolyl)borate; schH = p-schH, m-schH are carboxylate Schiff bases prepared by the reaction of 4- and 3-aminobenzoic acids, respectively, with salicylaldehyde) is not coordinated to the metal ion. The obtained Tb<sup>3+</sup> complexes exhibit ligand-centered emission, while in the luminescence spectra of Eu<sup>3+</sup> compounds narrow bands of characteristic emission of Eu<sup>3+</sup> are also observed. It is found that when the complexes are irradiated with UV light, the transformations of carboxylate ligands in the coordination compounds occur.</p></div></div>","PeriodicalId":796,"journal":{"name":"Theoretical and Experimental Chemistry","volume":"58 6","pages":"409 - 416"},"PeriodicalIF":1.0,"publicationDate":"2023-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4148084","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 Photosensitaizer Ability of Polymethine Dyes in Photodynamic Therapy: A Review 聚甲基染料在光动力治疗中的结构及光敏性研究进展
IF 1 4区 化学
Theoretical and Experimental Chemistry Pub Date : 2023-04-04 DOI: 10.1007/s11237-023-09754-9
A. A. Ishchenko, A. T. Syniugina
{"title":"Structure and Photosensitaizer Ability of Polymethine Dyes in Photodynamic Therapy: A Review","authors":"A. A. Ishchenko,&nbsp;A. T. Syniugina","doi":"10.1007/s11237-023-09754-9","DOIUrl":"10.1007/s11237-023-09754-9","url":null,"abstract":"<div><div><p>Different approaches to the development of promising photosensitizers based on polymethine dyes (PD) for photodynamic therapy are systematized, summarized, and analyzed. PD of the near-IR spectral range has drawn special attention. The influence of a heavy atom (chalcogens, halogens, and noble metals), the chromophore interaction, electron transfer, and free radicals on the singlet oxygen generation by PD is discussed. The PD photodynamic activity mechanisms under hypoxia conditions are considered. The PD structural modifications that ensure their targeted delivery to cancer cells are analyzed.</p></div></div>","PeriodicalId":796,"journal":{"name":"Theoretical and Experimental Chemistry","volume":"58 6","pages":"373 - 401"},"PeriodicalIF":1.0,"publicationDate":"2023-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4149863","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: 7
Catalytic Properties of Nickel-Containing Hierarchical Zeolites in the Reaction of n-Hexane Hydroizomerization 含镍分级沸石在正己烷氢异构化反应中的催化性能
IF 1 4区 化学
Theoretical and Experimental Chemistry Pub Date : 2023-04-01 DOI: 10.1007/s11237-023-09758-5
M. M. Kurmach, K. M. Konysheva, O. P. Pertko, P. S. Yaremov, Yu. G. Voloshyna, O. V. Shvets
{"title":"Catalytic Properties of Nickel-Containing Hierarchical Zeolites in the Reaction of n-Hexane Hydroizomerization","authors":"M. M. Kurmach,&nbsp;K. M. Konysheva,&nbsp;O. P. Pertko,&nbsp;P. S. Yaremov,&nbsp;Yu. G. Voloshyna,&nbsp;O. V. Shvets","doi":"10.1007/s11237-023-09758-5","DOIUrl":"10.1007/s11237-023-09758-5","url":null,"abstract":"<div><div><p>It is shown that H-forms of hierarchical aluminosilicate zeolites MOR, BEA, and MFI exhibit catalytic activity in the process of cracking <i>n</i>-hexane, while the introduction of nickel nanoparticles with an average size in the range of 2.3-5.5 nm changes the reaction direction towards isomerization. This opens up the prospects in creating catalysts based on Ni-containing zeolites for the reaction of the hydroisomerization of linear hydrocarbons.</p></div></div>","PeriodicalId":796,"journal":{"name":"Theoretical and Experimental Chemistry","volume":"58 6","pages":"427 - 434"},"PeriodicalIF":1.0,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4001615","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: 2
Influence of the Structure of Nanocomposites Based on Co,N,S-Doped Carbon and Co9S8 on the Catalytic Properties in the Processes of Quinoline and Its Methyl Derivatives Hydrogenation Co、N、s掺杂碳和Co9S8纳米复合材料结构对喹啉及其甲基衍生物加氢催化性能的影响
IF 1 4区 化学
Theoretical and Experimental Chemistry Pub Date : 2023-04-01 DOI: 10.1007/s11237-023-09757-6
O. O. Pariiska, D. O. Mazur, V. M. Asaula, V. V. Buryanov, R. Socha, Ya.I. Kurys, S. V. Kolotilov, V. G. Koshechko, V. D. Pokhodenko
{"title":"Influence of the Structure of Nanocomposites Based on Co,N,S-Doped Carbon and Co9S8 on the Catalytic Properties in the Processes of Quinoline and Its Methyl Derivatives Hydrogenation","authors":"O. O. Pariiska,&nbsp;D. O. Mazur,&nbsp;V. M. Asaula,&nbsp;V. V. Buryanov,&nbsp;R. Socha,&nbsp;Ya.I. Kurys,&nbsp;S. V. Kolotilov,&nbsp;V. G. Koshechko,&nbsp;V. D. Pokhodenko","doi":"10.1007/s11237-023-09757-6","DOIUrl":"10.1007/s11237-023-09757-6","url":null,"abstract":"<div><div><p>It has been found that composites based on Co,N,S-doped carbon and Co<sub>9</sub>S<sub>8</sub> can act as catalysts for the hydrogenation of quinoline and its monomethyl derivatives providing the formation of 1,2,3,4-tetrahydroquinolines with 75-99% yields. The high efficiency of these systems is caused first of all with the presence of Co-N<sub><i>x</i></sub> sites in their composition, which are formed as a result of the pyrolysis of cobalt salts and poly-5-aminoindole. The use of highly dispersed Vulcan XC72R carbon black as a component of the reaction mixture during the composite catalyst preparation by the pyrolysis contributes to a greater extent to the formation of active Co-N<sub><i>x</i></sub> sites in them, compared to graphene oxide or in the case when a carbon component is not added.</p></div></div>","PeriodicalId":796,"journal":{"name":"Theoretical and Experimental Chemistry","volume":"58 6","pages":"417 - 426"},"PeriodicalIF":1.0,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4001874","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: 2
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