Abstract
Single crystals of 0.2, 0.4, 0.6, 0.8 and 1 M of ZnSO4-added glycine were grown by slow evaporation method and their structural, optical and antimicrobial properties were studied. The incorporation of ZnSO4 on glycine was confirmed by the Powder X-Ray Diffraction (PXRD) and Fourier Transform Infra Red (FTIR) studies. The lesser molar proportion of ZnSO4 yields only α polymorph of glycine where as higher molar proportion of ZnSO4 yields γ polymorph of glycine; this was confirmed by PXRD investigation. The influence of ZnSO4 on the optical transmission in the visible and Ultraviolet (UV) region was studied by UV–Visible–Transmission spectrum. Nonlinear Optical (NLO) productivity of γ- glycine crystals was studied by Kurtz and Perry technique using Nd: YAG laser. The results revealed increased SHG efficiency with the highest of about 3.7 in the presence of 0.6 M of ZnSO4 compared to the reference material Potassium dihydrogen orthophosphate (KDP) crystal. The antimicrobial behavior of the doped samples were studied using agar diffusion method.
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