Investigation on nonlinear optical and antimicrobial applications ofγ-glycine single crystals

In this paper, we report the successful growth of MnSO₄-added glycine single crystals by the slow evaporation method. Powder X-ray diffraction analysis confirms the grown γ-glycine crystallizes into a hexagonal structure with a space group of P31/n. The percentage of transmittance of the crystal was recorded using UV–Vis Spectrophotometer and the optical band gap Eg was estimated for γ-glycine single crystal. Functional groups present in the grown crystals were identified by FTIR spectroscopic analysis. The dielectric constant and dielectric loss of grown crystal was carried out as a function of frequency and the results were discussed. Differential scanning calorimetry technique was employed to determine the phase transition, thermal stability and melting point of the grown crystal. The antibacterial activities of the title compound were performed by agar disk diffusion method against the standard bacteria's such as proteus, Staphylococcus aures, Streptococcus aures, Klebsiella and shigella. (author)