Der Pharma Chemica
Journal for Medicinal Chemistry, Pharmaceutical Chemistry, Pharmaceutical Sciences and Computational Chemistry
ISSN: 0975-413X
Abstract
Crystallization and Characterization of Nonlinear Optical Crystals of Urea
Author(s): Helen Merina Albert and C. Alosious GonsagoSingle crystals of Urea family such as Urea L-malate and Zn(II) incorporated Urea L-malate were synthesized and grown by slow solvent evaporation method in aqueous solution at an ambient temperature. Effect of metal dopant Zn(II) on physicochemical properties of Urea L-malate crystal has been studied. Crystal structure was analyzed by powder and single crystal X-ray diffraction techniques which indicate that both the pure and Zn(II) doped Urea Lmalate crystals are of monoclinic crystal system with P2 space group. Optical transmittance analysis was carried out to identify the optical behaviour of the grown crystals. It has been observed that the transmittance is adequate for both the crystals in the UV and visible regions. Kurtz powder method has been employed to find out the second harmonic generation efficiency of the grown crystals. The thermal decomposition and purity of the samples were studied by thermogravimetry and differential scanning calorimetry techniques. Dielectric nature of the as grown crystals Urea L-malate and Zn(II) doped Urea L-malate were studied in the frequency range of 100 Hz to 5 MHz at different temperatures.
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