Growth dynamics and molecular structural analysis of Dimethylketo thiosemicarbazone single crystals for frequency conversion applications - Optical and thermal characterization

Abstract

New organic Schiff base of Dimethylketo thiosemicarbazone (DMKT) was synthesized by condensation process and grown by solvent slow evaporation method in methanol solution. The grown crystal was subjected to a single crystal and powder X-ray diffraction study and to identify that the material crystallized into a triclinic crystal system with a P-1 noncentrosymmetric space group. The X-Ray data reveals that the crystalline network cohesion of this compound. The FT-IR and FT Raman spectral analysis show the vibration behavior of chemical bonds in the grown material. Its optical behavior was examined by UV–VIS spectrum and the DMKT crystal was found to have transparency in the region between 350 nm and 1100 nm. The luminescent emission of the grown material was identified from the fluorescence spectrum. Improvement in the second harmonic generation efficiency of the grown material was studied by the Kurtz and Perry powder method and it shows 26.7 mV of green light emission. The thermal stability and melting point of DMKT were confirmed by various thermal analyses.