Synthesis, Crystal Growth and Characterization of l-Proline Lithium Chloride Monohydrate: A New Semiorganic Nonlinear Optical Material

Abstract

A new semiorganic material, l-proline lithium chloride monohydrate (LPLCM), was synthesized for the first time. Its solubility and metastable zonewidth in double distilled water were estimated. Employing a temperature reduction method, a crystal of size 16 × 6 × 5 mm3 was grown from aqueous solution. The cell dimensions obtained by single crystal X-ray diffraction studies reveal that the crystal belongs to the monoclinic system. Functional groups of the grown crystal were identified from FTIR spectral analysis. UV−vis−NIR studies show that the crystal is transparent in the wavelength range of 300−1100 nm. Second harmonic generation conversion efficiency found using the Kurtz and Perry method is about 0.2 times that of KDP. The thermal stability of the compound was determined by TG-DTA analyses of the specimen. The microhardness test was carried out, and the load dependent hardness was measured.