Crystal growth and characterization of semiorganic single crystals of l-histidine family for NLO applications

Structural, topographical, linear and non linear optical, electrical and mechanical properties of pure and barium @ amino hydrogen chloride monohydrate single crystal by Slow Evaporation Solution Method

“…The peak at 530 cm -1 is due to torsional NH oscillation of NH 3+ [6]. The band at 959 cm -1 represents the O-H stretching of carboxylic acid [7]. The observed absorption peaks, well agree with the previous reported of LHC crystal [6,7,8] .…”

“…The powder XRD patterns of the LHC and Ba@LHC crystals are shown in Fig.1A. The obtained diffraction patterns of these crystals have been identified, which agree with the reported values [7,8].…”

“…The peak at 1417 cm -1 is attributed to symmetric mode of carboxyl ion and C-N stretching [6]. The C=O vibration of -COOH appears at 1635 cm -1 [7]. The peak at 530 cm -1 is due to torsional NH oscillation of NH 3+ [6].…”

“…Among the amino hydrogen chloride crystals, L -histidine hydrogen chloride monohydrate crystals (LHC) have been much attracted in crystal research technological field. L -histidine having the ability of imidazole moiety to act as a proton donor, a proton acceptor and a nucleophilic reagent and hydrochloric acid is a strong inorganic acid [6][7][8]. LHC is a semiorganic crystal which combine the positive aspects of organic (amino acid) and inorganic (HCl) materials resulting in desired nonlinear optical properties, high resistance, good mechanical hardness, low angular sensitivity, higher laser damage threshold [6,8].…”

Synthesis, growth and characterization of l-asparagine cadmium bromide: A novel semiorganic nonlinear optical single crystal

“…In the solid state amino acid, contains a protonated amino group (NH 3 + ) and deprotonated carboxylic acid group (COO − ). This dipolar nature exhibits the peculiar physical and chemical properties in amino acids which makes them suitable material for NLO applications [8][9][10][11][12][13].…”