Russian Chemical Bulletin最新文献_第3页

Chemiluminescence of Eu3+ in aqueous solutions upon electron transfer from Eu2+ to Ce4+ Eu3+在水溶液中电子从Eu2+转移到Ce4+时的化学发光

IF 1.7 4区化学

Russian Chemical Bulletin Pub Date : 2025-01-14 DOI: 10.1007/s11172-024-4444-y

A. M. Abdrakhmanov, L. R. Yakshembetova, K. S. Vasilyuk, B. M. Gareev, G. L. Sharipov

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Synthesis of 2-amino-1-(3-cyano-4,5,6,7-tetrahydrobenzo[b]thiophen-2-yl)-4-oxo-4,5-dihydro-1H-pyrrole-3-carboxylic acid derivatives and studies of their antitumor activity against melanoma cell line B16-F10 2-氨基-1-（3-氰基-4,5,6,7-四氢苯并[b]噻吩-2-基）-4-氧-4,5-二氢- 1h -吡咯-3-羧酸衍生物的合成及其对黑色素瘤细胞系B16-F10的抗肿瘤活性研究

IF 1.7 4区化学

Russian Chemical Bulletin Pub Date : 2025-01-14 DOI: 10.1007/s11172-024-4453-x

I. A. Gorbunova, A. Rogova, K. Yu. Parkhoma, D. A. Shipilovskikh, T. E. Karpov, R. R. Makhmudov, A. S. Timin, S. A. Shipilovskikh

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Experimental and quantum chemical study of transformations of a binuclear iron nitrosyl complex with a substituted mercaptotriazole ligand in DMSO 取代巯基三唑配体的双核亚硝基铁配合物在DMSO中转化的实验和量子化学研究

IF 1.7 4区化学

Russian Chemical Bulletin Pub Date : 2025-01-14 DOI: 10.1007/s11172-024-4454-9

E. A. Zagainova, O. V. Pokidova, N. S. Emel’yanova, N. A. Sanina

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Pairwise interaction and atomic structure in liquid gold 液态金的成对相互作用和原子结构

IF 1.7 4区化学

Russian Chemical Bulletin Pub Date : 2025-01-14 DOI: 10.1007/s11172-024-4434-0

N. E. Dubinin, R. E. Ryltsev

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Development of a novel rare earth element doped chitosan-graft-poly(hydroxyethyl methacrylate) composite for biomedical applications: synthesis, characterization, drug delivery, and antibacterial properties 新型稀土元素掺杂壳聚糖接枝聚甲基丙烯酸羟乙酯生物医学应用复合材料的研制：合成、表征、药物传递和抗菌性能

IF 1.7 4区化学

Russian Chemical Bulletin Pub Date : 2025-01-14 DOI: 10.1007/s11172-024-4463-8

N. Gürler, G. Torǧut, F. C. Yazdıç, A. Karaman, N. Karaaslan Ayhan

{"title":"Development of a novel rare earth element doped chitosan-graft-poly(hydroxyethyl methacrylate) composite for biomedical applications: synthesis, characterization, drug delivery, and antibacterial properties","authors":"N. Gürler, G. Torǧut, F. C. Yazdıç, A. Karaman, N. Karaaslan Ayhan","doi":"10.1007/s11172-024-4463-8","DOIUrl":"10.1007/s11172-024-4463-8","url":null,"abstract":"<div>The films of chitosan-graft-poly(hydroxyethyl methacrylate) polymer (Ch—g-poly(HEMA)) doped with the rare earth element (REE) lanthanum (La content of 0, 0.2, 0.4, and 0.8 wt.%) were fabricated. The films were characterized by attenuated total reflectance Fourier transform infrared (ATR-FTIR) spectroscopy, scanning electron microscopy with energy dispersive X-ray spectroscopy (SEM/EDS), thermogravimetric analysis (TGA), and powder X-ray diffraction (XRD) analysis. The films obtained were loaded with a model drug tetracycline by freezing/thawing method. The cumulative drug release properties of tetracycline were investigated. The release of tetracycline from the polymer matrix was carried out in phosphate-buffered saline (PBS) buffer (pH 7.4) at 37 °C. It was found that the REE-doped composite films had a retarding effect on tetracycline drug release compared to that of the undoped film. All tested composites regardless of the REE dopant content were found to be active against three Gram-positive and three Gram-negative bacterial strains used to assess the antimicrobial properties of the polymer composites. These findings demonstrated that lanthanum and tetracycline have a high affinity for the Ch—g-poly(HEMA) polymer and suggested a synergistic effect in the polymer—lanthanum—tetracycline system. The La3+-doped Ch—g-poly(HEMA) composite film can be used as drug carrier system in the biomedical field.</div>","PeriodicalId":756,"journal":{"name":"Russian Chemical Bulletin","volume":"73 11","pages":"3460 - 3470"},"PeriodicalIF":1.7,"publicationDate":"2025-01-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142976425","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}

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Synthesis, isolation, and molecular structures of twelve new isomers of trifluoromethylfullerene C60(CF3)14 十二种新的三氟甲基富勒烯C60(CF3)14异构体的合成、分离和分子结构

IF 1.7 4区化学

Russian Chemical Bulletin Pub Date : 2025-01-14 DOI: 10.1007/s11172-024-4448-7

N. B. Tamm, V. A. Brotsman, S. I. Troyanov

{"title":"Synthesis, isolation, and molecular structures of twelve new isomers of trifluoromethylfullerene C60(CF3)14","authors":"N. B. Tamm, V. A. Brotsman, S. I. Troyanov","doi":"10.1007/s11172-024-4448-7","DOIUrl":"10.1007/s11172-024-4448-7","url":null,"abstract":"<div>Trifluoromethyl derivatives C60(CF3)14 were synthesized by the reactions of fullerene C60 or chlorofullerenes C60Cln with gaseous CF3I in glass ampoules at 400–450 °C. The chromatographic separation of isomers of C60(CF3)14 was performed by a one- or two-step HPLC separation in hexane. Twelve out of 15 isomers were isolated for the first time. The molecular and crystal structures of the new isomers were determined by single-crystal X-ray diffraction analysis using synchrotron radiation. All isomers were characterized by MALDI mass spectrometry and UV—Vis absorption spectroscopy. The addition patterns of CF3 groups on the fullerene cage are considered in detail taking into account the formation of structural units, such as isolated or almost isolated C=C bonds, unoccupied pentagons, skew pentagonal-pyramid addition patterns, the attachment of CF3 groups in ortho positions, and benzenoid rings. The influence of different structural factors on the relative formation energy of the isomers (0.0–32.1 kJ mol−1), which was calculated by the DFT method, was analyzed. The isomers of C60(CF3)14 are the largest group of C60 trifluoromethyl derivatives with known molecular structures.</div>","PeriodicalId":756,"journal":{"name":"Russian Chemical Bulletin","volume":"73 11","pages":"3324 - 3334"},"PeriodicalIF":1.7,"publicationDate":"2025-01-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142976433","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

The influence of polymer dielectrics on electrical and sensory properties of organic field-effect transistors 聚合物电介质对有机场效应晶体管电学和感觉性能的影响

IF 1.7 4区化学

Russian Chemical Bulletin Pub Date : 2025-01-14 DOI: 10.1007/s11172-024-4438-9

A. A. Trul, V. A. Nagorny, V. P. Gaidarzhi, E. V. Agina, S. A. Ponomarenko

{"title":"The influence of polymer dielectrics on electrical and sensory properties of organic field-effect transistors","authors":"A. A. Trul, V. A. Nagorny, V. P. Gaidarzhi, E. V. Agina, S. A. Ponomarenko","doi":"10.1007/s11172-024-4438-9","DOIUrl":"10.1007/s11172-024-4438-9","url":null,"abstract":"<div>The work describes one of the stages of development of flexible polymer gas sensors based on organic field-effect transistors (OFETs) and is devoted to revealing the dependencies of the electrical and sensory properties of these devices on the characteristics of the polymer dielectric layer of the OFETs. The influence of the material of the dielectric layer, as well as the conditions of its application to the polymer substrate were investigated. It was shown that the surface morphology and the properties of the semiconductor layer, which was formed on top of the polymer dielectric by thermal evaporation in vacuo, strongly depend on the value of the surface energy of the dielectric used, while the roughness of its layer has no considerable effect on the morphology. The highest electrical characteristics were demonstrated by the OFETs based on the dielectric with the highest value of surface energy, that is, polymethyl methacrylate. At the same time, regardless of the dielectric used, all the sensor devices demonstrate a high sensitivity towards nitrogen dioxide, which has values that are comparable to those characterizing the sensitivity of similar devices fabricated on silicon substrates using the studied dielectrics as interface layers, as well as an ability towards recovery of the starting properties in pure air that is higher compared to that of silicon samples, which is very promising for the commercial application of the developed polymer gas sensors.</div>","PeriodicalId":756,"journal":{"name":"Russian Chemical Bulletin","volume":"73 11","pages":"3225 - 3238"},"PeriodicalIF":1.7,"publicationDate":"2025-01-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142976358","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

The PdFe, PdGa, and PdIn intermetallic compounds in CO2 hydrogenation to methanol: structure and catalytic properties 二氧化碳加氢制甲醇中PdFe、PdGa和PdIn金属间化合物的结构和催化性能

IF 1.7 4区化学

Russian Chemical Bulletin Pub Date : 2025-01-14 DOI: 10.1007/s11172-024-4437-x

A. V. Rassolov, G. N. Baeva, A. R. Kolyadenkov, A. E. Vaulina, A. V. Kazakov, A. Yu. Stakheev

{"title":"The PdFe, PdGa, and PdIn intermetallic compounds in CO2 hydrogenation to methanol: structure and catalytic properties","authors":"A. V. Rassolov, G. N. Baeva, A. R. Kolyadenkov, A. E. Vaulina, A. V. Kazakov, A. Yu. Stakheev","doi":"10.1007/s11172-024-4437-x","DOIUrl":"10.1007/s11172-024-4437-x","url":null,"abstract":"<div>The PdM intermetallic systems of various compositions (M = Fe, Ga, In) deposited on SiO2 were used to establish the relationship between the surface structure, phase composition of nanoparticles, and the behavior in the catalytic hydrogenation of carbon dioxide to methanol. The PdFe/SiO2 catalyst showed a high activity, but a very low methanol selectivity (2.7%). The activity of PdGa/SiO2 was slightly lower, while the selectivity was much higher (40%). The PdIn/SiO2 catalyst had the most promising catalytic performance over a wide range of operating temperatures (220–310 °C). Regarding the maximum selectivity (68.4%) and methanol productivity (0.85 gMeOH gPd+In−1 h−1), this catalyst markedly surpassed both the monometallic Pd catalyst and the Cu/ZnO/Al2O3 reference sample. The enhanced efficiency can be attributed to two key factors: more homogeneous phase composition of the nanoparticles and a unique structure of the active sites caused by the large electronegativity difference between the Pd and In atoms.</div>","PeriodicalId":756,"journal":{"name":"Russian Chemical Bulletin","volume":"73 11","pages":"3215 - 3224"},"PeriodicalIF":1.7,"publicationDate":"2025-01-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142976359","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}

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Synthesis of functionalized organophosphorus analogs of α- and β-alanine α-和β-丙氨酸功能化有机磷类似物的合成

IF 1.7 4区化学

Russian Chemical Bulletin Pub Date : 2025-01-14 DOI: 10.1007/s11172-024-4458-5

Yu. N. Bubnov, A. A. Prishchenko, M. V. Livantsov, O. P. Novikova, L. I. Livantsova, S. V. Baranin

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Synthesis, intramolecular cyclization, and antinociceptive activity of 4-(het)aryl-4-oxo-2-[(3-ethoxycarbonyl-5,6,7,8-tetrahydro-4H-cyclohepta[b]-thiophen-2-yl)amino]but-2-enoic acids 4-(het)芳基-4-氧-2-[（3-乙氧羰基-5,6,7,8-四氢- 4h -环庚[b]-噻吩-2-基）氨基]- 2-烯酸的合成、分子内环化及其抑菌活性

IF 1.7 4区化学

Russian Chemical Bulletin Pub Date : 2025-01-14 DOI: 10.1007/s11172-024-4452-y

K. Yu. Parkhoma, E. D. Davydenkova, R. R. Makhmudov, I. A. Gorbunova, D. A. Shipilovskikh

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