Synthesis, Growth and Optical Properties of Semiorganic Non-linear Optical Single Crystal: L-Arginine Acetate
ABSTRACT In the recent past, nonlinear optical materials are getting attention in the field fibre optic communica-tion and optical signal processing. In the present study, the title compound was successfully synthesized by conventional chemical reaction and then the single crystal was grown by slow evaporation solution growth technique. l-Arginine acetate (LAA) is semi organic non linear optical single crystal and crystal-lizes in noncentrosymmetric space group. The grown good quality single crystals have been analyzed by different characterization analyses such as powder X-ray diffraction, high resolution X-ray diffraction (HRXRD), Raman spectroscopy, photoluminescence, SEM, micro-hardness, thermal and birefringence analyses.
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ABSTRACT: L-Arginine semi-oxalate (LASO) single crystal has been grown by solution growth technique at room temperature. The crystal structure and lattice parameters were determined for the grown crystal by single crystal X-ray diffraction studies. Photoluminescence studies confirm the violet fluorescence emission peak at 395 nm. Optical constants like band gap, refractive index, reflectance, extinction coefficient and electric susceptibility were determined from UV-VIS-NIR spectrum. The dielectric constant, dielectric loss and ac conductivity of the compound were calculated at different temperatures and frequencies to analyze the electrical properties. The solid state parameters such as plasma energy, Penn gap, Fermi energy and polarizability were calculated to analyze second harmonic generation (SHG). Nonlinear optical property was discussed to confirm the SHG efficiency of the grown crystal.Bulletin- Korean Chemical Society 01/2013; 34(1). DOI:10.5012/bkcs.2013.34.1.128 · 0.84 Impact Factor
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ABSTRACT: The present study reports the successful development of five new cyclohexenone derivatives (CDs) using rational design synthesis principles and quantum chemical calculations. These new CDs were synthesized by following a convenient route of Robinson annulation, and the molecular structure of these CDs were later confirmed by various analytical techniques such as 1H NMR, 13C NMR, FT-IR, UV–Vis spectroscopy and Mass spectrometry. The results from spectroscopic studies show that the as-synthesized CDs molecules apparently emit violet light at about 406-414 nm. Moreover, polarizability (α) and first static hyperpolarizability (β) were computed by density functional theory (DFT). In addition, the UV–Vis spectra, transition character and electronic structures of these CDs were computed by using the time dependent density functional theory (TD-DFT). It was interesting to note that the values of computed and experimental electronic transitions (λmax) were in good agreement. Finally, the measurements of higher non-linear optical (NLO) response of our newly synthesized CDs suggest their potential for application in photonic devices.Journal of Molecular Structure 05/2014; 1071. DOI:10.1016/j.molstruc.2014.04.074 · 1.60 Impact Factor
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ABSTRACT: Single crystals of pure and metal ions (K+, Na+ and Li+) doped l-serine have been grown by slow evaporation solution growth technique (SEST). Energy dispersive X-ray analysis (EDAX) and inductively coupled plasma optical emission spectroscopy (ICP-OES) prove the incorporation of metal ions into the doped crystals. The lattice parameters have been obtained from single crystal X-ray diffraction (XRD) studies. The presence of functional groups is identified by Fourier transform infrared (FTIR) and FT-RAMAN analyses. The thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC) reveal that the thermal stability of lithium doped l-serine crystal is enhanced. The mechanical properties have been studied by vicker's microhardness test. UV–vis-NIR spectroscopy shows that the percentage of transmission is increased in lithium doped l-serine crystals. Potassium and lithium ions doped l-serine crystals have enhanced second harmonic generation (SHG) efficiency indicating that these crystals are potential candidates for non linear optical (NLO) applications.Optik - International Journal for Light and Electron Optics 05/2014; 125(9):2051–2056. DOI:10.1016/j.ijleo.2013.09.084 · 0.77 Impact Factor