Studies on growth, structural, thermal and nonlinear optical properties of 4-methylpyridinium 2, 4-dinitrophenolate single crystal

In this work, we have grown an organic nonlinear crystal of 4-methylpyridinium 2, 4-dinitrophenolate with reasonable size by slow evaporation solution growth method using ethanol solvent at ambient temperature. A well-developed surface crystal was selected for characterization studies, and single-crystal X-ray diffraction analysis provided a centrosymmetric monoclinic crystal structure. Various functional groups and different vibrational modes were identified using Fourier transform-infrared spectroscopy studies. Fluorescence emission declares that 4MPDNP crystal serves as a photoactive material. The optical transparency and optical band gap energy were examined by the UV–visible spectrum. Thermogravimetric and differential scanning calorimetry analyses were employed to understand the thermal and physio-chemical stability of the title compound. The relative dielectric permittivity and laser damage threshold of the grown crystal were measured by LCR/impedance analyzer and Q-switched Nd: YAG laser, respectively. The magnitude of third-order nonlinear optical parameters was evaluated by the Z-scan technique.