Fabrication of nonlinear optical metal-organic framework dizinc tetraglycinate dihydrate with optical limiting applications

Abstract

Single crystals of dizinc tetraglycinate dihydrate have been synthesized by the slow evaporation solution growth technique and it was characterized by Single-crystal X-ray Diffraction (SXRD), Powder X-ray Diffraction (PXRD), Hirshfeld surface analysis, Ultraviolet–Visible-Near-Infrared analysis (UV–Vis-NIR), Thermogravimetric-differential thermal analysis (TG/DTA), Photoluminescence (PL) study, Fourier Transform Infrared Spectroscopy (FT-IR), Second Harmonic Generation (SHG), Z scan measurements, and laser threshold power density study. From the structure, the metal part Zn (II) forms five membered fused ring structure. The PXRD study proved the crystalline nature of the material. Williamson–Hall method is used to calculate the lattice strain and crystalline size of the grown crystal. The Hirshfeld surface analysis shows the major contributions of intermolecular interactions. Optical parameters transmittance, band gap, and refractive index were calculated. Wemple–DiDomenico single-oscillator model determine the nature of refractive index below the energy gap. PL analysis revealed the photo-luminescence property of the crystal. The TG/DTA analysis confirmed its thermal stability. From C-R plot, the kinetic and thermodynamic parameters of crystal Dizinc Tetraglycinate Dihydrate (DZTGD) have been calculated. All the functional groups were determined by the FT-IR analysis. The laser threshold power density of the crystal was elucidated. The title compound shows second- and third-order non-linear responses.