Single crystal growth and characterization of pyroelectric L-arginine dihydrobromide monohydrate (LADB)

Abstract

The formation and the crystal growth conditions of all compounds from the L-Arg + HBr + H2O system were studied and described. IR spectroscopy method was used to identify the obtained crystals. Solubility was determined by the sequential dissolution of decreasing amounts method at a given temperature. The main difficulty of L-Arginine dihydrobromide monohydrate (LADB) crystal growth is its very high solubility in water. This study however demonstrates that a high-quality single crystal was grown by the SERS method, developed by the authors. The achieved high quality of grown LADB crystal makes it possible to count on its wide application as a pyroelectric crystal. These grown crystals were subjected to a microhardness study. Thermal properties and UV–Vis transmittance spectrum were also investigated. The efficiency of the second harmonic generation of L-arginine halide crystals was measured and compared with that of KDP.