Category Ranking
98%
Total Visits
921
Avg Visit Duration
2 minutes
Citations
20
Article Abstract
The motivation for this work was to develop new protic ionic liquids (PILs) as additives for the lubrication of micro and nanoelectromechanical systems (MEMS and NEMS). Ten PILs based on the combination of methylimidazolium ([MIMH]), 4-picolinium ([4-picH]), pyridinium ([PyrH]), 1,8-diazabicyclo[5.4.0]-undec-7-ene-8-ium ([DBUH]) and tetramethylguanidinium ([TMGH]) cations with hydrogen sulfate([HSO]) and mesylate ([MeSO]) anions were tested as additives in polyethylene glycol (PEG200) to lubricate steel/silicon and silicon/silicon contacts. The best additive was [4-picH][HSO], which adsorbed strongly on the Si surface, leading to a protective film that reduced wear by up to 15 times compared to PEG200.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10057895 | PMC |
| http://dx.doi.org/10.3390/molecules28062678 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Durable Near-Zero Wear Behavior Achieved by Polymer-Based Protic Ionic Liquids on Engineering Steel Surfaces.
ACS Appl Mater Interfaces
September 2025
State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China.
Near-zero wear on engineering steel surfaces is a promising solution to extend the service life of mechanical equipment. However, most existing strategies offer only limited low wear under particular conditions and friction pairs. To address this, we design a polymer-based proton ionic liquid (PPILs) lubricant, leveraging the proton exchange between polyethylenimine, which is rich in active nitrogen groups, and bis(2-ethylhexyl) phosphate.
View Article and Find Full Text PDFApplication of a protic ionic liquid/lignin mixture from sugarcane pretreatment as a supporting agent for the entrapment of Eversa® Transform 2.0 lipase in alginate beads.
Int J Biol Macromol
August 2025
Metabolic and Bioprocess Engineering Laboratory, Department of Food Engineering and Technology, Faculty of Food Engineering, University of Campinas, São Paulo, Brazil; Interinstitutional Graduate Program in Bioenergy (USP/UNICAMP/UNESP), Rua Cora Coralina, 330, Cidade Universitária, Campinas, São
In this study, sugarcane straw pretreatment liquor, the residual fraction from biomass pretreatment containing protic ionic liquid and lignin, was used for the immobilization of Eversa® Transform 2.0 lipase via alginate entrapment. In its wet form, liquor beads (BLw) achieved a high value of mechanical strength (7.
View Article and Find Full Text PDFInterfacial Modification of Conjugated Coordination Polymers for Efficient and Selective Nitrogen Electroreduction to Ammonia.
ACS Nano
September 2025
Hefei National Research Center for Physical Sciences at Microscale, University of Science and Technology of China, Hefei 230026, China.
Electrocatalytic nitrogen reduction reaction (NRR) to ammonia holds great potential for sustainable ammonia synthesis at ambient conditions, where a single-atom catalyst has recently emerged as a prospective NRR catalyst candidate owing to its advantageous features such as maximal metal-utilization efficiency and low-coordinated single-atom metal sites. Nevertheless, owing to the uncontrolled coordination structures of the single-metal-atom sites in single-atom catalysts and the unregulated gas/ion migration in their surface reaction microenvironments, it still remains a formidable challenge to simultaneously improve the NRR selectivity and activity. In this work, we report a facile and general strategy to prepare a composite catalyst with protic ionic liquids (PIL) modified on conjugated coordination polymers that feature abundant single-atom metal sites with well-defined coordination structures, significantly outperforming its counterpart catalyst without PIL.
View Article and Find Full Text PDFCatalytic Asymmetric Ionic Hydrogenation of α-Alkyl Styrenes.
J Am Chem Soc
September 2025
Max-Planck-Institut für Kohlenforschung, 45470 Mülheim an der Ruhr, Germany.
Over the past two decades, chemists have made significant advances in the field of catalytic asymmetric transfer hydrogenation of various unsaturated compounds with biomimetic hydrogen donors. The reduction of carbon-carbon double bonds, however, has been limited to activated substrate classes, such as enals, enones, nitroolefins, or α-(2-hydroxyaryl) styrenes. Here we report a highly enantioselective Brønsted acid-catalyzed ionic hydrogenation of α-alkyl styrenes using a hydrosilane in combination with a protic additive.
View Article and Find Full Text PDFUncovering the Residual Electrolyte Quantity in Recycled Battery Black Mass via Liquid Chromatography Tandem Mass Spectrometry and Ion Chromatography-Conductivity Detection.
ChemSusChem
August 2025
MEET Battery Research Center, University of Münster, Corrensstraße 46, 48149, Münster, Germany.
A workflow for the quantification of electrolyte residues, including linear and cyclic carbonates, conducting salt and selected degradation products from shredded lithium ion battery material black mass, is developed. Therefore, a liquid chromatography method hyphenated to a tandem mass spectrometer is set up which is capable of separating and reliably quantifying standard organic electrolyte compounds showing low limits of quantification and detection. For the quantification of ionic species, ion chromatography with a conductivity detector is used.
View Article and Find Full Text PDF