Synthesis of monodisperse Cu nanoparticles in Ionic Liquids: A synthetic and catalytic approach of in situ nanoparticles

• Synthesis of monodisperse copper nanoparticles size of 6 nm in ionic liquids.
• The key role of ionic liquids to determine the size of copper nanoparticles.
• The size of the copper nanoparticles is inversely proportional to the quantity of ionic liquid used.
• The catalytic activity of copper nanoparticles to synthesize triazoles through click chemistry.
• Ionic liquids are act as stabilizer to nanoparticles and solvent for click reaction as well.

We described herein the importance of Ionic Liquids to synthesize in situ monodisperse copper nanoparticles with high surface area at room temperature. The in situ formed nanoparticles were characterized by Transmission Electron Microscopy (TEM), Energy-dispersive spectrometer (EDS) and X-ray powder diffraction (XRD) and shows excellent catalytic activity for cycloaddition reaction between azides with terminal alkynes to furnish 1,4-triazoles in excellent yields under mild conditions. The present catalytic system can take advantage of both ionic liquids and nanoparticles. The proposed catalytic system can minimize the time to synthesize copper nanoparticles with stabilizer and eliminates additional additives as well.

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