Growth physio chemical and quantum chemical investigation of organic single crystals for nonlinear optical applications

Abstract

ABSTRACT newlineA brief overview of the nonlinear optical concepts focusing on second order and newlinethird order nonlinearity and various crystal growth methods emphasizing low newlinetemperature solution growth techniques have been discussed in detail. An introduction newlineto nonlinear optical materials and organic, inorganic and semi-organic classification newlinebased on their properties are discussed. newline4-chloroanilinium quinoline-2-carboxylate (4CQ), a new organic salt was newlineprepared and productively achieved as a single crystal with diffraction feature by newlineengaging solution evaporation method. The obtained 4CQ crystal has been newlinecharacterized experimentally using single-crystal XRD, NMR, FTIR, UV- Vis spectra newlineand TG-DTA thermal analysis. The chemical productions (1H and 13C) of 4CQ, newlinesynthesized compounds were initially confirmed unambiguously using NMR spectral newlinetechnique. The determined crystal structure of 4CQ exhibited triclinic, P1and#773; space group. newlineFTIR and FT-Raman spectrum revealed unique spectroscopic nature compared with newlineparent compounds leading to the confirmation of 4CQ complex formation. UV-Vis newlineabsorbance spectrum of 4CQ crystal showed a lower cut of wavelength at 312 nm. TG- newline