Synthesis, Growth, Optical and Dielectric Characterization of 8-Hydroxyquinolinium Hydrogen Fumarate Single Crystal

Abstract

An organic nonlinear optical single crystal, 8-hydroxyquinolinium hydrogen fumarate (8HQF) was grown from mixed solvent of ethanol and water using slow evaporation solution growth technique. The single crystal XRD studies confirmed that the grown crystal belongs to the triclinic crystal system with the centrosymmettric space group P ī. FT-IR spectral analysis confirms the various functional groups present in the compound. The optical absorption studies shows that the crystal is transparent with a lower cut-off wavelength of 439 nm and the optical energy band gap Eg is found to be 2.66 eV. The variation of dielectric properties of the grown crystal with respect to the frequency has been investigated at different temperatures.