RSC Mechanochemistry最新文献_第4页

Chalcogen-bonded cocrystals and salt cocrystals via automated resonant acoustic mixing with a button operative bot† 通过一个按钮操作机器人自动共振声学混合的硫键共晶和盐共晶

RSC Mechanochemistry Pub Date : 2024-12-10 DOI: 10.1039/D4MR00109E

Grace E. Cosby, Téodor Iftemie, Alireza Nari and David L. Bryce

{"title":"Chalcogen-bonded cocrystals and salt cocrystals via automated resonant acoustic mixing with a button operative bot†","authors":"Grace E. Cosby, Téodor Iftemie, Alireza Nari and David L. Bryce","doi":"10.1039/D4MR00109E","DOIUrl":"https://doi.org/10.1039/D4MR00109E","url":null,"abstract":"Mechanochemical approaches to the preparation of chalcogen-bonded cocrystals have not been systematically well-studied. We report here the preparation of six cocrystals and salt cocrystals of chalcogen bond (ChB) donor 3,4-dicyano-1,2,5-telluradiazole using resonant acoustic mixing (RAM). The ChB acceptors employed are tetraphenylphosphonium chloride, tetraphenylphosphonium bromide, 4-methoxypyridine N-oxide, 4-phenylpyridine N-oxide, tetrabutylammonium bromide, and tetrabutylammonium iodide. Acceptor atoms include Cl, Br, I, and O. In all six cases, RAM reproduces the known crystal forms of the ChB products as assessed by powder X-ray diffraction and FTIR spectroscopy. The role of liquid additives is also assessed. The success of RAM in generating ChB products in pure form contrasts with previous efforts to use ball milling for this purpose. We show that ball milling pure 3,4-dicyano-1,2,5-telluradiazole using standard instrumental settings results in amorphization and decomposition in five minutes or less, thereby highlighting the difficulties of using ball milling to generate ChB cocrystals. The design, construction, and implementation of a button operative bot (BOB) to help automate RAM experiments is also described herein. Overall, these results suggest that RAM offers a suitably gentle and tailorable mechanochemical approach for generating known and novel cocrystals.","PeriodicalId":101140,"journal":{"name":"RSC Mechanochemistry","volume":" 2","pages":" 201-208"},"PeriodicalIF":0.0,"publicationDate":"2024-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/mr/d4mr00109e?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143553656","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Mechanochemical synthesis of eucairite CuAgSe and investigation of physicochemical and transport properties 长叶云母CuAgSe的机械化学合成及其理化和输运性质的研究

RSC Mechanochemistry Pub Date : 2024-12-10 DOI: 10.1039/D4MR00111G

Dáša Drenčaková, Marcela Achimovičová, Matej Baláž, Jiří Navrátil, Erika Tóthová, Maksym Lisnichuk, Jaroslav Briančin, Viktor Puchý and Tomáš Plecháček

{"title":"Mechanochemical synthesis of eucairite CuAgSe and investigation of physicochemical and transport properties","authors":"Dáša Drenčaková, Marcela Achimovičová, Matej Baláž, Jiří Navrátil, Erika Tóthová, Maksym Lisnichuk, Jaroslav Briančin, Viktor Puchý and Tomáš Plecháček","doi":"10.1039/D4MR00111G","DOIUrl":"https://doi.org/10.1039/D4MR00111G","url":null,"abstract":"Copper silver selenide, CuAgSe, was easily and conveniently prepared from Cu, Ag and Se powders in a stoichiometric ratio by one-step solvent-free mechanochemical synthesis after 7 min of milling in a planetary ball mill. The kinetics of the synthesis, along with the structure, morphology, thermal stability, physicochemical, and thermoelectric properties of the product were investigated. The crystal structure, physicochemical properties, and morphology were characterised by X-ray diffraction, particle size distribution analysis, specific surface area measurements, X-ray photoelectron spectroscopy, and scanning and transmission electron microscopy. XRD confirmed the crystal structure as a mixture of tetragonal and orthorhombic CuAgSe. Analysis of surface composition revealed partial surface oxidation. Electron microscopy revealed that the nanostructured product consisted of agglomerated particles of irregular shape which formed clusters with a size >20 μm while the mean size of crystallites was 12.1 nm. The mixed crystal structure was also confirmed by selected area diffraction. Thermal analysis clearly indicated a reversible phase transformation. The spark plasma sintering method was applied to prepare a dense CuAgSe pellet for thermoelectric characterization. High-temperature transport properties were examined to assess the potential application of mechanochemically synthesized synthetic eucairite in energy conversion.","PeriodicalId":101140,"journal":{"name":"RSC Mechanochemistry","volume":" 2","pages":" 246-255"},"PeriodicalIF":0.0,"publicationDate":"2024-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/mr/d4mr00111g?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143553679","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Scaling theory for the kinetics of mechanochemical reactions with convective flow† 具有对流流动的机械化学反应动力学的标度理论

RSC Mechanochemistry Pub Date : 2024-12-07 DOI: 10.1039/D4MR00091A

Tetsuya Yamamoto, Koji Kubota, Yu Harabuchi and Hajime Ito

引用次数: 0

Mechanochemical synthesis of rock salt-type Na2CaSnS4 as a sodium-ion conductor† 岩盐型钠离子导体Na2CaSnS4的机械化学合成

RSC Mechanochemistry Pub Date : 2024-12-03 DOI: 10.1039/D4MR00028E

Hamdi Ben Yahia, Atsushi Sakuda and Akitoshi Hayashi

引用次数: 0

Mechanochemical kilogram-scale synthesis of rac-ibuprofen:nicotinamide co-crystals using a drum mill† 机械化学公斤级合成racc -布洛芬：卷筒磨烟酰胺共晶

RSC Mechanochemistry Pub Date : 2024-12-03 DOI: 10.1039/D4MR00096J

Jan-Hendrik Schöbel, Frederik Winkelmann, Joel Bicker and Michael Felderhoff

{"title":"Mechanochemical kilogram-scale synthesis of rac-ibuprofen:nicotinamide co-crystals using a drum mill†","authors":"Jan-Hendrik Schöbel, Frederik Winkelmann, Joel Bicker and Michael Felderhoff","doi":"10.1039/D4MR00096J","DOIUrl":"https://doi.org/10.1039/D4MR00096J","url":null,"abstract":"Within pharmaceutical research and development, co-crystallization has emerged as a common strategy to modify the physicochemical properties of active pharmaceutical ingredients, tackling a wide array of challenges in drug formulation. Contrasting with conventional solution-based methods that typically consume substantial amounts of solvents and energy, we herein present a more eco-friendly and efficient mechanochemical process for producing co-crystals at kilogram scale. Our study pioneers the use of a drum mill for pharmaceutical co-crystal synthesis, using rac-ibuprofen:nicotinamide as a representative example. Our findings demonstrate the viability of repurposing common industrial milling equipment for potential large-scale production of pharmaceutical co-crystals. With the optimized system and utilizing liquid-assisted grinding techniques, the reaction was completed within 90 min and yielded 99% of pure rac-ibuprofen:nicotinamide co-crystals by simply sieving off the grinding media. Examination of the resulting co-crystals showed minimal metal contamination from abrasion, with levels well within acceptable regulatory standards for daily intake. Our findings underscore the promise of drum mill technology in creating greener processes for large-scale pharmaceutical co-crystal synthesis, paving the way for more sustainable industrial drug manufacturing practices.","PeriodicalId":101140,"journal":{"name":"RSC Mechanochemistry","volume":" 2","pages":" 224-229"},"PeriodicalIF":0.0,"publicationDate":"2024-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/mr/d4mr00096j?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143553658","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Mechanochemical synthesis and transformation of the polymorphic double carbonates fairchildite and buetschliite, (K2Ca(CO3)2): an in situ X-ray powder diffraction study† 多晶双碳酸盐（K2Ca(CO3)2）的机械化学合成与转化：原位x射线粉末衍射研究。

RSC Mechanochemistry Pub Date : 2024-11-28 DOI: 10.1039/D4MR00093E

Volker Kahlenberg, Doris E. Braun, Wolfgang Schmidt, Hang Liu, Sebastian Leiting and Claudia Weidenthaler

{"title":"Mechanochemical synthesis and transformation of the polymorphic double carbonates fairchildite and buetschliite, (K2Ca(CO3)2): an in situ X-ray powder diffraction study†","authors":"Volker Kahlenberg, Doris E. Braun, Wolfgang Schmidt, Hang Liu, Sebastian Leiting and Claudia Weidenthaler","doi":"10.1039/D4MR00093E","DOIUrl":"10.1039/D4MR00093E","url":null,"abstract":"This study presents the mechanochemical synthesis of the two K2Ca(CO3)2 polymorphs, fairchildite and buetschliite, from CaCO3 and K2CO3 using a shaker mill. Unlike previous methods requiring high temperatures and prolonged heating, fairchildite, a high-temperature polymorph, is formed initially in all experiments, adhering to Ostwald's rule of stages. Notably, the transformation to the stable buetschliite phase can be achieved by varying milling parameters, particularly frequency and moisture content. The results suggest that pressure, rather than temperature, plays a significant role in this phase transition, with moisture further accelerating the transformation. These findings offer a new, efficient route for the synthesis of these polymorphs, highlighting the critical influence of milling conditions on the reaction pathway.","PeriodicalId":101140,"journal":{"name":"RSC Mechanochemistry","volume":" 1","pages":" 152-158"},"PeriodicalIF":0.0,"publicationDate":"2024-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11603408/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142776181","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Mechanochemical ZIF-9 formation: in situ analysis and photocatalytic enhancement evaluation† 机械化学ZIF-9形成：原位分析和光催化强化评价

RSC Mechanochemistry Pub Date : 2024-11-19 DOI: 10.1039/D4MR00114A

Noelia Rodríguez-Sánchez, Carsten Prinz, Ralf Bienert, Menta Ballesteros, A. Rabdel Ruiz Salvador, Biswajit Bhattacharya and Franziska Emmerling

引用次数: 0

Mechanochemical coupling of two coupled kinesin monomers: comparison with that of the single dimer† 两偶联激酶单体的机械化学偶联：与单二聚体的比较

RSC Mechanochemistry Pub Date : 2024-11-16 DOI: 10.1039/D4MR00057A

Ping Xie

{"title":"Mechanochemical coupling of two coupled kinesin monomers: comparison with that of the single dimer†","authors":"Ping Xie","doi":"10.1039/D4MR00057A","DOIUrl":"https://doi.org/10.1039/D4MR00057A","url":null,"abstract":"The dynamics of cargo transport by two coupled kinesin monomers, such as kinesin-1, kinesin-2 and kinesin-3, is studied theoretically and is compared with that by the corresponding single dimer on the basis of our proposed model for the mechanochemical coupling of the two coupled monomers and that of the single dimer. It is shown that if the stalk, which connects the monomer and cargo, has a short length LS (e.g., LS < 5 nm) the cargo transport by the two monomers can be efficient with an unloaded velocity that can be similar to that by the corresponding single dimer, whereas the cargo transport by the two monomers with a long LS can only be inefficient with an unloaded velocity and a stall force much smaller than those with the short LS. Although the unloaded velocity for the two coupled kinesin-1 monomers with a short LS can be similar to that for the single kinesin-1 dimer, the stall force for the former is reduced by about 2 times relative to that for the latter. The dynamics of the two coupled kinesin-3 KIF1A monomers relative to the single kinesin-3 dimer is similar to that of the two coupled kinesin-1 monomers relative to the single kinesin-1 dimer. By contrast, the stall force for the two kinesin-2 KIF3A monomers with a short LS can be similar to that for the single kinesin-2 KIF3AA, KIF3BB or KIF3AB dimer. The theoretical results agree well with the available experimental evidence. The underlying mechanism of the two coupled kinesin-1 or kinesin-3 monomers with the short LS having an evidently smaller stall force than the corresponding single dimer and the two coupled kinesin-2 KIF3A monomers with the short LS having a stall force similar to that of the corresponding single dimer is explained.","PeriodicalId":101140,"journal":{"name":"RSC Mechanochemistry","volume":" 1","pages":" 127-141"},"PeriodicalIF":0.0,"publicationDate":"2024-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/mr/d4mr00057a?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142976278","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Rapid mechanochemical synthesis and properties in Pb–Bi–S system†‡ Pb-Bi-S体系的快速机械化学合成与性能研究[j]

RSC Mechanochemistry Pub Date : 2024-11-13 DOI: 10.1039/D4MR00107A

Peter Baláž, Erika Dutková, Nina Daneu, Michal Hegedüs, Matej Baláž, Emmanuel Guilmeau, Róbert Džunda, Mária Bali-Hudáková, Veronika Garbárová, Jianzhong Jiang and Marcela Achimovičová

{"title":"Rapid mechanochemical synthesis and properties in Pb–Bi–S system†‡","authors":"Peter Baláž, Erika Dutková, Nina Daneu, Michal Hegedüs, Matej Baláž, Emmanuel Guilmeau, Róbert Džunda, Mária Bali-Hudáková, Veronika Garbárová, Jianzhong Jiang and Marcela Achimovičová","doi":"10.1039/D4MR00107A","DOIUrl":"https://doi.org/10.1039/D4MR00107A","url":null,"abstract":"We prepared a ternary sulfide with a stoichiometry close to Pb6Bi2S9 from PbS, Bi, and S precursors using mechanochemical synthesis. After 5 min of high-energy milling, conversion of the precursors to Pb5.95Bi2.02S9.03 was confirmed using scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDXS). Further milling (up to 120 min) led to the metal-enriched and sulfur-deficient composition Pb6.40Bi2.24S8.36. Values of the specific surface area of the produced powder samples were used as an indicator of the transition from the mechanical activation mode to the mechanochemical synthesis mode. The products crystallized in the galena structure, with the crystallite size ranging from 5 to 15 nm, as determined by X-ray diffractometry (XRD) with Rietveld refinement and transmission electron microscopy (TEM). The dissolution of Bi from the synthesized nanocrystals corresponds to changes in the specific surface area. Spark plasma sintering (SPS) densified ingots in the temperature range of 300–525 K exhibit semiconducting properties and a low thermal conductivity of 0.38–0.5 W m−1 K−1, making them promising for thermoelectric applications. The possibility of modifying the properties of a ternary Pb–Bi–S system by mechanochemistry paves the way for the synthesis of more sophisticated ternary and multinary structures suitable for energy applications.","PeriodicalId":101140,"journal":{"name":"RSC Mechanochemistry","volume":" 1","pages":" 91-99"},"PeriodicalIF":0.0,"publicationDate":"2024-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/mr/d4mr00107a?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142976255","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Mechanosynthesis of ruthenium trisbipyridyl complexes and application in photoredox catalysis in a ball-mill† 三联吡啶钌配合物的机械合成及其在球磨机光氧化还原催化中的应用

RSC Mechanochemistry Pub Date : 2024-11-08 DOI: 10.1039/D4MR00112E

Florian Luttringer, Matthieu Lavayssiere, Enita Rastoder, Nikita Salov, Tristan Gravelet, François Quintin, Julien Pinaud, Frédéric Lamaty and Xavier Bantreil

引用次数: 0