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Doped Silicon Nanoparticles. A Review 掺杂硅纳米颗粒。综述
IF 0.8 4区 化学
Doklady Chemistry Pub Date : 2024-04-13 DOI: 10.1134/S001250082460007X
S. S. Bubenov, S. G. Dorofeev
{"title":"Doped Silicon Nanoparticles. A Review","authors":"S. S. Bubenov,&nbsp;S. G. Dorofeev","doi":"10.1134/S001250082460007X","DOIUrl":"10.1134/S001250082460007X","url":null,"abstract":"<p>Doped silicon nanoparticles combine material availability and biocompatibility with a wide variety of functional properties. The review focuses on the methods of fabrication of doped silicon nanoparticles, the prevalent of those being chemical vapor deposition, annealing of substoichiometric silicon compounds, and diffusion doping. Data on the achieved doping levels have been summarized. For the important case of phosphorus, it has been shown that an impurity excessive relative to its solubility in silicon crystals is electrically inactive. The patterns of intraparticle dopant distributions studied in the last decade using powerful techniques of atom probe tomography and solid-state NMR are presented. The promising optical and electrophysical properties of doped silicon nanoparticles are considered, and the significant role of the position of dopants in the design of a material with the desired properties is exemplified by plasmonic behavior.</p>","PeriodicalId":530,"journal":{"name":"Doklady Chemistry","volume":"514 1","pages":"1 - 20"},"PeriodicalIF":0.8,"publicationDate":"2024-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140588306","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
Synthesis of Polyfunctional O-Containing Compounds with Acetal Fragment by Low-Temperature Ozonolysis of 1,3-Dioxepins 通过低温臭氧分解 1,3-二氧杂环庚烷合成含乙缩醛片段的多官能团 O 型化合物
IF 0.8 4区 化学
Doklady Chemistry Pub Date : 2024-04-13 DOI: 10.1134/S0012500824600081
E. R. Belyaeva, Yu. G. Borisova, G. Z. Raskildina, R. M. Sultanova, S. S. Zlotsky
{"title":"Synthesis of Polyfunctional O-Containing Compounds with Acetal Fragment by Low-Temperature Ozonolysis of 1,3-Dioxepins","authors":"E. R. Belyaeva,&nbsp;Yu. G. Borisova,&nbsp;G. Z. Raskildina,&nbsp;R. M. Sultanova,&nbsp;S. S. Zlotsky","doi":"10.1134/S0012500824600081","DOIUrl":"10.1134/S0012500824600081","url":null,"abstract":"<p>3,5-Dioxo-1,7-heptanedials, 3,5-dioxo-1,7-heptanediols, and derivatives of 1,3-dioxo-1,7-heptanediboxylic acid have been synthesized for the first time by the low-temperature ozonolysis of 1,3-dioxepins. It has been shown that intermediate ozonolysis products, peroxy compounds, depending on decomposition conditions can produce corresponding individual dialdehydes, diols, and diesters with high selectivity.</p>","PeriodicalId":530,"journal":{"name":"Doklady Chemistry","volume":"514 2","pages":"58 - 61"},"PeriodicalIF":0.8,"publicationDate":"2024-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140588295","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
Evaluation of Toxicity of Ionic Liquids as Solvents in C–C Cross-coupling Reaction 评估离子液体作为 C-C 交叉偶联反应溶剂的毒性
IF 0.8 4区 化学
Doklady Chemistry Pub Date : 2024-04-13 DOI: 10.1134/S0012500824600068
A. E. Kolesnikov, K. S. Egorova
{"title":"Evaluation of Toxicity of Ionic Liquids as Solvents in C–C Cross-coupling Reaction","authors":"A. E. Kolesnikov,&nbsp;K. S. Egorova","doi":"10.1134/S0012500824600068","DOIUrl":"10.1134/S0012500824600068","url":null,"abstract":"<p>In this work, by means of bio-strips and cytotoxic potentials of chemical reactions, the decisive impact of solvent choice on the “overall cytotoxicity” of the process is shown by example of 36 routes of 1,1′-biphenyl synthesis.</p>","PeriodicalId":530,"journal":{"name":"Doklady Chemistry","volume":"514 2","pages":"50 - 57"},"PeriodicalIF":0.8,"publicationDate":"2024-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140588313","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
Synthesis, Characterization, and Biological Evaluation of New Cyclic Quinazoline Derivatives as Potential Antibacterial and Antifungal Agents 作为潜在抗菌剂和抗真菌剂的新型环状喹唑啉衍生物的合成、表征和生物学评价
IF 0.8 4区 化学
Doklady Chemistry Pub Date : 2024-03-08 DOI: 10.1134/S0012500823600554
Oday H. R. Al-Jeilawi, Safaa H. F. Tuama, Iftikhar A. Hussein, Andy N. S. Shamaya
{"title":"Synthesis, Characterization, and Biological Evaluation of New Cyclic Quinazoline Derivatives as Potential Antibacterial and Antifungal Agents","authors":"Oday H. R. Al-Jeilawi,&nbsp;Safaa H. F. Tuama,&nbsp;Iftikhar A. Hussein,&nbsp;Andy N. S. Shamaya","doi":"10.1134/S0012500823600554","DOIUrl":"10.1134/S0012500823600554","url":null,"abstract":"<p>Heterocyclic compounds are crucial for medicinal chemistry and the development of therapeutic agents like broad-spectrum antibiotics. This study devised a facile procedure to synthesize novel antimicrobial bicyclic heterocycles from 2-mercapto-3-phenylquinazolin-4(3<i>H</i>)-one. Advanced analytical techniques including <sup>1</sup>H and <sup>13</sup>C NMR, elemental analysis, and FT-IR spectroscopy characterized the intricate chemical structures of the products. In vitro assays tested the heterocycles against aerobic and anaerobic bacterial strains using fluconazole and ciprofloxacin as antifungal and antibacterial controls. Results demonstrated the formidable broad-spectrum antibacterial and antifungal activities of the synthesized compounds, with growth inhibition approaching that of the positive controls. These findings highlight the immense potential of these novel heterocyclic compounds as antimicrobial agents. Further research can optimize their drug-like properties for eventual clinical use in combating drug-resistant infections.</p>","PeriodicalId":530,"journal":{"name":"Doklady Chemistry","volume":"514 2","pages":"27 - 34"},"PeriodicalIF":0.8,"publicationDate":"2024-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140073870","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 Surface Microstructure on the Corrosion Resistance and Magnetic Properties of an Amorphous Cobalt-Based Co–Si–Fe–Cr–Al Alloy 表面微观结构对非晶钴基 Co-Si-Fe-Cr-Al 合金耐腐蚀性和磁性能的影响
IF 0.8 4区 化学
Doklady Chemistry Pub Date : 2024-03-08 DOI: 10.1134/S0012500823700222
I. I. Kuznetsova, O. K. Lebedeva, D. Yu. Kultin, N. S. Perov, L. M. Kustov
{"title":"Effect of Surface Microstructure on the Corrosion Resistance and Magnetic Properties of an Amorphous Cobalt-Based Co–Si–Fe–Cr–Al Alloy","authors":"I. I. Kuznetsova,&nbsp;O. K. Lebedeva,&nbsp;D. Yu. Kultin,&nbsp;N. S. Perov,&nbsp;L. M. Kustov","doi":"10.1134/S0012500823700222","DOIUrl":"10.1134/S0012500823700222","url":null,"abstract":"<p>The surface of an amorphous cobalt-based alloy with a nominal composition of Co75Si15Fe5Cr4.5Al0.5 was modified with nanostructures by anodizing in an ionic liquid—1-butyl-3-methylimidazolium bis(trifluoromethanesulfonyl)imide. The magnetic (specific saturation magnetization and coercive force) and corrosion (corrosion potential and resistance) characteristics of an amorphous alloy before and after electrochemical modification of the surface with nanostructures have been compared. Modification of the alloy surface partially changes its magnetic properties. After corrosion tests, an increase in the coercive force is observed. Corrosion tests were carried out using the polarization curve method in Ringer’s solution. The corrosion resistance of alloys modified with oxide nanostructures is higher than the corrosion resistance of an abrasive-treated alloy. The increase in corrosion resistance is determined mainly by the presence of nanostructures.</p>","PeriodicalId":530,"journal":{"name":"Doklady Chemistry","volume":"514 2","pages":"35 - 41"},"PeriodicalIF":0.8,"publicationDate":"2024-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140073872","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
Antifriction Composites Based on a Two-Component Modified Phenol–Formaldehyde Binder 基于双组分改性苯酚-甲醛粘合剂的减摩复合材料
IF 0.8 4区 化学
Doklady Chemistry Pub Date : 2024-03-08 DOI: 10.1134/S0012500823601080
M. O. Panova, D. I. Buyaev, V. V. Shaposhnikova
{"title":"Antifriction Composites Based on a Two-Component Modified Phenol–Formaldehyde Binder","authors":"M. O. Panova,&nbsp;D. I. Buyaev,&nbsp;V. V. Shaposhnikova","doi":"10.1134/S0012500823601080","DOIUrl":"10.1134/S0012500823601080","url":null,"abstract":"<p>New polymer composite materials (PCMs) were obtained based on a mixture of phenol–formaldehyde and phthalide-containing phenol–formaldehyde resole-type binders reinforced with polyoxadiazole fiber, and their tribological properties were investigated. A study was made of the effect of the content of the phthalide-containing phenol–formaldehyde polymer in the two-component mixture of binders on the hardness of the surface layer and the tribological and thermofrictional properties of the PCM in various systems of dry friction on steel. It was shown that the resulting PCMs are superior in tribological and thermofrictional properties to PCMs based on phenol–formaldehyde or phthalide-containing phenol–formaldehyde resole-type binders.</p>","PeriodicalId":530,"journal":{"name":"Doklady Chemistry","volume":"514 1","pages":"21 - 25"},"PeriodicalIF":0.8,"publicationDate":"2024-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140073684","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
Synthesis of Novel Composite Sorbents Based on Titanium, Calcium, and Magnesium Phosphates 基于钛、钙和镁磷酸盐的新型复合吸附剂的合成
IF 0.8 4区 化学
Doklady Chemistry Pub Date : 2024-03-08 DOI: 10.1134/S0012500824600020
N. V. Mudruk, M. V. Maslova,  A. I. Nikolaev
{"title":"Synthesis of Novel Composite Sorbents Based on Titanium, Calcium, and Magnesium Phosphates","authors":"N. V. Mudruk,&nbsp;M. V. Maslova,&nbsp; A. I. Nikolaev","doi":"10.1134/S0012500824600020","DOIUrl":"10.1134/S0012500824600020","url":null,"abstract":"<p>Heterogeneous and mechanochemical syntheses of new materials based on titanium, calcium, and magnesium phosphates were developed for the first time. The products demonstrated high efficiency as sorbents for the removal of heavy metal cations and radionuclides from solutions. The joint action of the sorption components ensures high sorption capacity towards various cations over a wide pH range. The optimal conditions providing products with a specified phase composition were identified. The use of a solution of a phosphorus-containing agent and solid precursors taken in a stoichiometric ratio, together with mild hydrothermal conditions make it possible to minimize the amount of liquid waste. In the first step of the synthesis, precipitation of titanium phosphate and formation of the precursor needed for the second step (formation of calcium and magnesium phosphates) take place simultaneously. Thus, the synthesis protocol complies with the green chemistry principles.</p>","PeriodicalId":530,"journal":{"name":"Doklady Chemistry","volume":"514 2","pages":"42 - 49"},"PeriodicalIF":0.8,"publicationDate":"2024-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140073686","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
C(2)H-Alkylation of (Benz)oxazoles with Tertiary Alkyl Chlorides and Bromides under Photoinduced Palladium Catalysis 在光诱导钯催化下，(苯)恶唑与叔烷基氯化物和溴化物的 C(2)H 烷基化反应
IF 0.8 4区 化学
Doklady Chemistry Pub Date : 2024-02-28 DOI: 10.1134/S0012500823600815
I. V. Lavrentev, A. V. Astakhov, K. E. Shepelenko, V. M. Chernyshev
{"title":"C(2)H-Alkylation of (Benz)oxazoles with Tertiary Alkyl Chlorides and Bromides under Photoinduced Palladium Catalysis","authors":"I. V. Lavrentev,&nbsp;A. V. Astakhov,&nbsp;K. E. Shepelenko,&nbsp;V. M. Chernyshev","doi":"10.1134/S0012500823600815","DOIUrl":"10.1134/S0012500823600815","url":null,"abstract":"<p>A method has been developed for the selective C(2)H alkylation of (benz)oxazoles with tertiary alkyl chlorides and alkyl bromides under visible light-induced (460 nm) catalysis with the Pd(PPh<sub>3</sub>)<sub>4</sub>/[Bu<sub>4</sub>N]I system in <i>N,N</i>-dimethylacetamide. The tetraalkylammonium salt has a significant promoting effect on the reaction, which seems to be based on the stabilization of nanosized palladium species in the catalytic system.</p>","PeriodicalId":530,"journal":{"name":"Doklady Chemistry","volume":"513 1","pages":"327 - 336"},"PeriodicalIF":0.8,"publicationDate":"2024-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140007622","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
Unconventional Approach to the Synthesis of Nickel and Platinum Complexes of 1,3,6-Azadiphosphacycloheptanes 以非常规方法合成 1,3,6-叠氮磷杂环庚烷的镍和铂络合物
IF 0.8 4区 化学
Doklady Chemistry Pub Date : 2024-02-28 DOI: 10.1134/S0012500823600827
E. I. Musina, I. D. Strelnik, I. A. Litvinov,  A. A. Karasik
{"title":"Unconventional Approach to the Synthesis of Nickel and Platinum Complexes of 1,3,6-Azadiphosphacycloheptanes","authors":"E. I. Musina,&nbsp;I. D. Strelnik,&nbsp;I. A. Litvinov,&nbsp; A. A. Karasik","doi":"10.1134/S0012500823600827","DOIUrl":"10.1134/S0012500823600827","url":null,"abstract":"<p>A new method has been proposed for the synthesis of bis(phosphine sulfides) and nickel and platinum chelate complexes of 1,3,6-azadiphosphacycloheptanes. The method is based on the ability of 14-membered 3,6,10,13-diazadiphosphacyclotetradecanes to undergo a reversible transformation in solutions into a mixture of <i>meso-</i> and <i>rac</i>-isomers of seven-membered bis-phosphines. The reaction of 3,6,10,13-diazadiphosphacyclotetradecanes with elementary sulfur results in 14-membered tetrakis(phosphine sulfides) or seven-membered bis(phosphine sulfides), depending on the reaction conditions. The reaction of 1,3,6-azadiphosphacycloheptanes, resulting from the reversible dissociation of 14-membered tetraphosphines in chloroform, with Ni(CH<sub>3</sub>CN)<sub>6</sub>(BF<sub>4</sub>)<sub>2</sub> and Pt(COD)Cl<sub>2</sub> gives the corresponding chelate complexes. The structures of the <i>meso</i>-isomer of 1-cyclohexyl-3,6-diphenyl-1-aza-3,6-diphosphacycloheptane-3,6-disulfide, bis-(κ<sup>2</sup>-1-isopropyl-3,6-diphenyl-1-aza-3,6-diphosphacycloheptane)nickel bis(tetrafluoroborate), bis-(κ<sup>2</sup>-1-cyclohexyl-3,6-diphenyl-1-aza-3,6-diphosphacycloheptane)chloronickel tetrafluoroborate, and <i>cis</i>-dichloro-(κ<sup>2</sup>-1-cyclohexyl-3,6-diphenyl-1-aza-3,6-diphosphacycloheptane)platinum(II), isolated in crystalline form, have been confirmed by single crystal X-ray diffraction.</p>","PeriodicalId":530,"journal":{"name":"Doklady Chemistry","volume":"513 1","pages":"342 - 350"},"PeriodicalIF":0.8,"publicationDate":"2024-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140007615","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
Synthesis and Structure of New [5]Ferrocenophane 新型 [5]ferrocenophane 的合成与结构
IF 0.8 4区 化学
Doklady Chemistry Pub Date : 2024-02-28 DOI: 10.1134/S0012500823600840
A. V. Medved’ko, A. V. Churakov, D. P. Krut’ko, S. Z. Vatsadze
{"title":"Synthesis and Structure of New [5]Ferrocenophane","authors":"A. V. Medved’ko,&nbsp;A. V. Churakov,&nbsp;D. P. Krut’ko,&nbsp;S. Z. Vatsadze","doi":"10.1134/S0012500823600840","DOIUrl":"10.1134/S0012500823600840","url":null,"abstract":"<p>The first example of intramolecular diastereoselective domino reaction of ferrocene 1,1'-bis-enone to [5]ferrocenophane initiated with sodium ethoxide was found. The product is [5]ferrocenophane with two pyridyl and one ethoxy substituents arranged asymmetrically in a five-carbon bridge. Diffraction studies showed that ferrocene is in almost ideal eclipsed conformation. The fan conformation found in the crystal is also preserved in solution, which was determined by NMR spectroscopy.</p>","PeriodicalId":530,"journal":{"name":"Doklady Chemistry","volume":"513 2","pages":"375 - 379"},"PeriodicalIF":0.8,"publicationDate":"2024-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140007746","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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