Growth and Characterization Studies: Potential Nonlinear Optical Single Crystals Hippuric Acid (HA)

Organic non-linear optical materials receive much attention owing to their very large second order nonlinearities, ultra-fast response times and high optical damage thresholds. In the present work, low temperature solution growth technique has been employed to grow non-linear optical hippuric acid (HA) C 6 H 5 CONHCH 2 COOH single crystal with dimensions 10 x 6 x 3 mm 3 were obtained in a period of 18 days using acetone as solvent. Powder XRD analysis reveals that the crystal belongs to an orthorhombic system with space group P2 1 2 1 2 1 and lattice parameters were found to be a = 8.8514 A, b = 9.0842 A, c = 10.5807 A. UV optical absorption analysis on these samples reveals the transparency of the crystal in the visible region. The bonding structure and molecular associations due to chemical reactions were analyzed by FTIR spectroscopy.