Crystal growth, spectroscopic and antimicrobial investigations on glycine-doped ZnSO_4-(NH_4)_2SO_4 single crystal

摘要

In this paper, investigations on Glycine doped in Zinc Sulphate, ammonium sulphate were reported for the first time. Single crystals Glycine and zinc-ammonium sulphate were grown at room temperature by slow evaporation technique. Single-crystal X-ray diffraction studies show that the grown crystal belongs to hexagonal crystal structure with a P3_1 space group. Inductively coupled optical emission spectrometry studies were analyzed to know the Zinc Sulphate-ammonium sulphate element presence in the grown new material. To find the title material crystalline nature Powder X-ray diffraction analysis was carried out, and using FT-IR the grown crystal functional groups was identified. Thermal behavior and melting point of the sample was found using TG/DTA-DSC analysis which indicated that the material does not decompose before melting. The emission of green light on passing the Nd: YAG laser light confirmed the second harmonic generation property of the crystals and the SHG efficiency of the crystals was found to be higher than that of KDP. The NLO test confirms the second harmonic signal generation in the sample. The UV-Vis-NIR result shows that the crystal has a sharp cut off at 210 nm and is nearly 75% transparent over a wide wavelength range enabling it for application in the UV region. To know the grown crystal surface morphology scanning electron microscopy analysis was done. The antibacterial activity was carried out for the title compound using agar diffusion method. The test compounds were screened in vitro for their antibacterial activity against three Gram-positive species (Staphylococcus aureus) (E. coli, Salmonella typhi) of bacterial strains and also against two fungal strains i.e., Aspergillus Niger and Aspergillus clavatus.