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has been cited by the following article:

• TITLE: Investigation on Structural, Optical and Thermal Properties of Diphenyl Urea—An Organic Non-Linear Optical Crystal

  AUTHORS: Jaishree Damodharan, Kanchana Gopinath, Kesavasamy Ramasamy

  KEYWORDS: Non-Linear Optical Crystal, Slow Evaporation Technique, Characterization

  JOURNAL NAME: Journal of Minerals and Materials Characterization and Engineering, Vol.3 No.2, January 27, 2015

  ABSTRACT: Organic non-linear optical crystal diphenyl urea with molecular formula C13H12N2O was synthesized and grown successfully by slow evaporation solution growth technique. The single crystal X-ray diffraction (XRD) confirms that it crystallizes in orthorhombic crystal system with non-centrosymmetric space group Pna21. The various functional groups were identified qualitatively by Fourier transform-infra red (FT-IR) and FT-Raman techniques. The electron absorption spectrum was studied by UV-Vis spectrophotometer. Thermal behavior of the crystal was evidenced by thermogravimetric (TG) and differential scanning calorimetric (DSC) analyses. From DSC the melt ing point of the crystal is found to be 145°C. The existence of second harmonic generation (SHG) signal was evidenced using Kurtz Perry powder test and the efficiency of the crystal was found to be 0.64 times that of the standard KDP crystal.