Growth and Characterization of a Nonlinear Optical Crystal a Complex Orthonitroaniline with Picric Acid Single Crystal by Vertical Bridgman Technique

Single crystal of organic NLO material Orthonitroaniline with picric acid (2[C6H6N2O2]-C6H2(NO2)3OH) (ONAP) of dimensions 27mm length and 12mm of diameter was grown from melt using vertical Bridgman technique. The grown crystal was confirmed with monoclinic structure by single crystal X-ray diffraction studies. Fourier transform infrared spectroscopy was used to assign various modes and to identify the functional groups present in the crystal. The presence of title compound was confirmed by NMR studies. The suitability for laser applications for the reported crystal was confirmed with UV-Vis studies. Keywords: Vertical Bridgman Technique, Organic compounds, NLO materials Characterization.