An imidazolium (Im) salt with two long alkyl substituents at N atoms is employed to prepare cubelike palladium nanoparticles (PdNPs). The bilayer nature of the capped Im salts is characterized by thermogravimetric analysis and NMR studies. These capped Im salts are labile, as evidenced by their displacement reaction with dimethylaminopyridine, and the observation of fast exchange between those free and capped Im salts on the NMR time scale. NMR results also show that these capped Im salts exhibit different diffusion rates, and interesting spinning rate dependent chemical shifts. These cubelike PdNPs could catalyze the Suzuki coupling of aryl chlorides and boronic acids with high yields in 10 min, even at room temperature.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1021/la501569e | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Carbon Nanotube-Based Chemiresistive Sensor Array for Dissolved Gases.
ACS Omega
November 2024
Department of Chemistry and Chemical Biology, McMaster University, 1280 Main St. W., Hamilton, Ontario L8S 4M1, Canada.
Dissolved gases such as oxygen (DO) and ammonia (dNH) are among the most consequential parameters for the assessment of water quality. Since the concentrations of DO and dNH are interdependent through the nitrogen cycle, simultaneous monitoring can be useful in many applications. For example, in wastewater treatment, aeration baths are used to adjust the rate of removal of ammonia by the bioactive sludge.
View Article and Find Full Text PDFBiocompatibility and osteogenic assessment of experimental fluoride-doped calcium-phosphate cements on human dental pulp stem cells.
Dent Mater
November 2024
Dental Biomaterials and Minimally Invasive Dentistry, Department of Dentistry, Faculty of Health Sciences, Cardenal Herrera-CEU University, CEU Universities, Valencia, Spain. Electronic address:
Objectives: This study investigated the impact of some specific experimental calcium phosphate cements doped with different fluoride salts (FDCPCs) concentrations on the basal functions of human Dental Pulp Stem Cells (hDPSCs). Furthermore, this study also examined the migration, as well as the mineralisation through osteogenic differentiation.
Methods: Experimental FDCPCs were formulated using different concentrations of calcium/sodium fluoride salts [(5 wt%: VS5F), (10 wt%: VS10F), (20 wt%: VS20F)].
Fluorinated Arylarsonate-Containing Polyoxomolybdates: pH-Dependent Formation of Mo vs Mo Species and Their Solution Properties.
Inorg Chem
October 2024
School of Science, Constructor University, Campus Ring 1, Bremen 28759, Germany.
We report on the synthesis and structural characterization of six novel arylarsonate-containing polyoxomolybdates with fluorinated-functionalities in the position of the phenyl ring. The reaction of the various arylarsonic acids, RAsOH [ = 4-F-CH (H), 4-FC-CH (H), 4-FCO-CH (H)] with NaMoO·2HO in aqueous pH 3 solution resulted in the heteropoly-6-molybdates [{(4-F-CH)As}MoO(HO)] (), [{(4-FC-CH)As}MoO] () and [{(4-FCO-CH)As}MoO(HO)] (), which were isolated as guanidinium salts. When the reaction was performed in aqueous pH 1 solution the inverted-Keggin type heteropoly-12-molydates [{(4-F-CH)As}MoO] (), [{(4-FC-CH)As}MoO] () and [{(4-FCO-CH)As}MoO] (), were obtained and isolated as sodium salts.
View Article and Find Full Text PDFChemical Quantum Dots in Bell Laboratories.
Acc Chem Res
September 2024
Chemistry Department, Columbia University, New York, New York 10025, United States.
ConspectusChemical quantum dots are small semiconductor crystallites (1.5 to 5 nm in diameter). Too small to behave as bulk semiconductors, they have band gaps and luminescence colors that vary with size in a controllable and predictable manner.
View Article and Find Full Text PDFGreen synthesis of silver nanoparticles from extract for the evaluation of antibacterial and anticorrosion properties.
Heliyon
August 2024
Department of Chemistry, Mahendra Morang Adarsh Multiple Campus, Biratnagar, Tribhuvan University, Nepal.
Plant-mediated synthesis of silver nanoparticles (AgNPs) is an eco-friendly and convenient alternative to conventional methods. leaf extract (BHE) was used in this study to reduce metal salts and cap and stabilize nanoparticles (NPs), which were characterized and tested for antibacterial and anti-corrosion properties. Stirring the extract with AgNO led to a color change, indicating nanoparticle formation.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!