RSC Mechanochemistry最新文献_第3页

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

Experimental and kinetic modelling study of NC palladacycles mechanosynthesis† 数控palladycle机械合成的实验与动力学建模研究

RSC Mechanochemistry Pub Date : 2024-11-08 DOI: 10.1039/D4MR00082J

Rachel J. Allenbaugh, Tia M. Ariagno and Jeffrey Selby

引用次数: 0

Trapping in situ generated CF3-nitrile imines with maleimides under solvent-free mechanochemical conditions† 在无溶剂机械化学条件下用马来酰亚胺捕获原位生成的cf3 -腈亚胺†

RSC Mechanochemistry Pub Date : 2024-11-07 DOI: 10.1039/D4MR00075G

Greta Utecht-Jarzyńska, Szymon Jarzyński and Marcin Jasiński

引用次数: 0

Coordination polymers containing dimeric Cu2X2 and polymeric (CuI)n clusters linked by unsymmetrical isomeric pyridine-benzimidazole linkers: modulating photophysical properties by mechanical stimuli† 含二聚体Cu2X2和由不对称异构体吡啶-苯并咪唑连接的聚合物（CuI）n簇的配位聚合物：通过机械刺激调节光物理性质

RSC Mechanochemistry Pub Date : 2024-11-05 DOI: 10.1039/D4MR00071D

Prantik Dutta, Abhijit Garai and Kumar Biradha

{"title":"Coordination polymers containing dimeric Cu2X2 and polymeric (CuI)n clusters linked by unsymmetrical isomeric pyridine-benzimidazole linkers: modulating photophysical properties by mechanical stimuli†","authors":"Prantik Dutta, Abhijit Garai and Kumar Biradha","doi":"10.1039/D4MR00071D","DOIUrl":"https://doi.org/10.1039/D4MR00071D","url":null,"abstract":"Two rigid unsymmetrical linkers, 4-PBI and 3-PBI, have been successfully employed to synthesize three CuX cluster-based coordination polymers (CPs). The complexation reaction of 4-PBI with CuI and CuBr resulted in isostructural crystalline CP1 and CP2, respectively, containing Cu2X2 clusters. On the other hand, the isomeric 3-PBI with CuI resulted in crystalline CP3 containing a one-dimensional polymeric (CuI)n cluster. Furthermore, the mechanochromism of the CPs has been examined using DRS, solid state PL, FT-IR and Raman spectroscopy. CP1 and CP2 exhibited mechanochromism as their colours changed from reddish brown to orangish yellow upon grinding. The pressure induced local distortion around the flexible dimeric cores of CP1 and CP2 was responsible for the resultant mechanochromism. The presence of a polymeric CuI cluster with μ3-bridging I atoms within the 2D layer of CP3 renders it rigid, thereby hampering its ability to display mechanochromism.","PeriodicalId":101140,"journal":{"name":"RSC Mechanochemistry","volume":" 1","pages":" 100-107"},"PeriodicalIF":0.0,"publicationDate":"2024-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/mr/d4mr00071d?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142976228","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

Shaking up conjugates between chitosan and aldehydes via mechanochemistry† 壳聚糖和醛之间的偶联物的机械化学研究

RSC Mechanochemistry Pub Date : 2024-11-05 DOI: 10.1039/D4MR00110A

Casper Van Poucke, Sven Mangelinckx and Christian V. Stevens

引用次数: 0

Efficient racemization of the pharmaceutical compound Levetiracetam using solvent-free mechanochemistry† 用无溶剂机械化学研究药物化合物左乙拉西坦的高效消旋作用

RSC Mechanochemistry Pub Date : 2024-10-31 DOI: 10.1039/D4MR00103F

Chrystal Lopes, Lucia Casali, Franziska Emmerling, Tom Leyssens, Valérie Dupray, Clement Brandel and Yohann Cartigny

引用次数: 0

Eco-friendly anaerobic oxidation of aryl diazo esters with heterocyclic N-oxide under ball milling: synthesis of 1,2-dicarbonyl systems† 杂环n -氧化物在球磨下对芳基重氮酯的生态友好厌氧氧化：1,2-二羰基体系的合成

RSC Mechanochemistry Pub Date : 2024-10-25 DOI: 10.1039/D4MR00097H

Souvik Guha, Subhabrata Sen and Ludovic Gremaud

引用次数: 0