Ali Kakanejadifard - Department of Chemistry, Faculty of Science, Lorestan University, Khorramabad, Iran
Vida Khojasteh - Department of Chemistry, Faculty of Science, Lorestan University, Khorramabad, Iran
Abedin Zabardasti - Department of Chemistry, Faculty of Science, Lorestan University, Khorramabad
Farideh Azarbani - Department of Biology, Faculty of Science, Lorestan University, Khorramabad, Iran

A novel azo-Schiff base ligand (L) was prepared by reacting ۲-hydroxy-۵-(pyridine-۴-yldiazenyl) benzaldehyde with ۱,۲-phenylenediamine. Moreover, Silver nanoparticles (Ag-NPs) and Cadmium sulfide nanoparticles (CdS-NPs) were prepared by employing azo-Schiff base ligand (L) as capping and reducing agent. The solid-state fluorescence spectroscopy was used to investigate the interaction between L with one of the nanomaterials (CdS-NPs). The fluorescence studies showed that L suppresses the CdS-NPs fluorescence. The antibacterial and antifungal activities of mentioned nanoparticles were determined against different bacteria and plant fungal strains and the obtained results were compared. The azo-Schiff base ligand (L) only exhibited antibacterial activity against B. cereus as Gram-positive bacterium. L-Ag-NPs had moderate to high antibacterial properties for both Gram-negatives and Gram-positives species. Moreover, L-CdS-NPs showed activity against B. cereus as a Gram-positive and E. coli as a Gram-negative baterium. All the described compounds showed antifungal activity against the fungal strains tested.

Azo-Schiff base, Antibacterial and antifungal activity, CdS nanoparticles, Ag Nanoparticles