Growth, structural, thermal, dielectric, mechanical, linear and nonlinear optical properties of semi-organic crystal: 2,5-dimethylanilinium chloride monohydrate

Abstract

Single crystal of 2,5-dimethylanilinium chloride monohydrate (DACM) was grown using slow evaporation solution growth technique at room temperature with dimensions 27×4×5 mm3. Single crystal X-ray diffraction studies confirmed that DACM crystallizes in monoclinic crystal system with non-centrosymmetric space group of P21. The presence of functional groups for the grown crystals was confirmed using Fourier Transform Infrared (FTIR) spectroscopy. The optical transparency and cut off wavelength of the grown crystal was examined by UV-Visible spectral studies. Thermal stability and melting temperature of the as grown crystal were identified from TG-DTA analysis. The dielectric constant and dielectric loss has been studied as a function of frequency for various temperatures. Photoluminescence excitation studies showed blue emission radiation occurred at 340.61 nm. Microhardness measurements revealed the mechanical strength of grown crystal. Laser damage threshold studies were carried out for the grown crystal. The second harmonic generation behavior of the grown crystals was confirmed by Kurtz–Perry powder technique.