నైరూప్య

Microwave-Assisted Synthesis of ZnO Nanoparticles From 1, 2, 3 Tri Substituted Ionic Liquid and Their Antimicrobial and Biofilm Activities

K. Saravanan and K. Rajathi

In the present investigation, certain highly substituted imidazolium based ionic liquids ([HEMIM] BF4 and [HEMIM] PF6) were synthesized and the structures were confirmed by spectral studies such as FT-IR, 1H-NMR and 13C-NMR. Stable zinc oxide nanoparticles were successfully synthesized by wet chemical method using imidazolium based ionic liquids (ILs). The structural, morphological and chemical composition of the nanoparticles have been investigated by X-Ray Diffraction (XRD), Scanning Electron Microscopy (SEM) and with Energy Dispersive X-ray spectroscopy (EDX). The antimicrobial activity of the zinc oxide (ZnO) nanoparticles were studied by determining its minimum inhibitory concentration (MIC) by broth dilution method and bio film inhibition of ZnO were also tested against one gram positive and one gram negative bacteria. In view of the results, it appeared that nanoparticles prepared in ionic liquids with PF6 - are the most effective products against the tested bacterial strains compared with nanoparticles prepared in ionic liquids with BF4 - anion.