Binding interaction and optical properties of 1-(4-methoxyphenyl)-2-(naphthalen-1-yl)-1H-phenanthro [9, 10-d] imidazole (MPNPI) with ZnO nanoparticle has been studied. MPNPI is analyzed by 1 H, 13 C NMR, mass and elemental means. Single crystal X-Ray Diffraction (XRD) investigation is carried out to verify the arrangement of MPNPI and it shows that the MPNPI has monoclinic arrangement. Sol-gel method has been applied to synthesize ZnO nanoparticles, whereas powder XRD, Scanning Electron Microscope (SEM) and Energy Dispersive X-ray Spectra (EDS) methods have been used to characterize them. Binding interaction and optical properties are established by electronic spectral analysis. It is observed that MPNPI strongly binds on the surface of nanoparticles and increases the concentration of nanoparticles into MPNPI resulting in remarkable fluorescence quenching. Fluorescence quenching completes via the electrons transfer from MPNPI's excited state to nanoparticle.
The imidazole derivatives are synthesised and characterized by FT-IR, NMR and mass spectral analysis. The optimized geometrical parameters, HOMO -LUMO energy levels and Molecular Electrostatic Potential (MEP) were carried out. The imidazole derivatives (1-4) against bacterial strains and fungal strains were carried out by using Agar well diffusion method and serial dilution method. The bacterial strain such as Bacillus subtilis, Staphylococcus aureus, Salmonella typhi, Klebsiella pneumonia, Pseudomonas, Auruginosa, Escherichia coli and Candida albicans, Candida-6, Rhizopus, Aspergillus flavus, Aspergillus niger and Mucor fungal strains are used for this study. Fluconazole and Ciprofloxacin are used as standards (positive control) for fungal and bacterial strains, respectively.
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