Spectroscopic studies on the influence of 10 mol% of glycine on nonlinear optical crystal L-valinium picrate |
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Authors: | Antony Joseph A Ebenezar I John David Ramachandra Raja C |
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Institution: | aSt. Joseph's College of Engineering & Technology, Thanjavur 613 403, Tamil Nadu, India;bTBML College, Porayar 609 307, Tamil Nadu, India;cGovernment Arts College (Autonomous), Kumbakonam 612 001, Tamil Nadu, India |
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Abstract: | Nonlinear optics is a fascinating field, which plays a vital role in the emerging field of photonics and optoelectronics. A new nonlinear optical crystal of glycine mixed l-valine picrate (GVP) have been grown from saturated aqueous solution by slow evaporation method at a temperature of 36 °C using a constant temperature bath of accuracy of ±0.01 °C. The synthesized organic optical material has been purified by repeated recrystallization. Single crystal X-ray diffraction analysis has been made to determine the cell parameters and it confirms the crystal lattice to be orthorhombic. UV–vis-NIR spectrum have recorded for GVP crystals in the range from 190 nm to 1100 nm and it is found that the crystal has cut-off at 450 nm. Fourier transform infrared transmission has confirmed the presence of the functional group present in the title compound. The spectrum has been recorded by KBr pellet technique. The 1H and 13C NMR spectra have been recorded to elucidate the molecular structure of GVP crystals. The second harmonic generation (SHG) of the grown crystal have been confirmed by Kurtz–Perry method using Nd:YAG laser as source. |
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Keywords: | l-valinium picrate" target="_blank">Glycine mixed l-valinium picrate Amino acids XRD FT-IR FT-NMR Crystal growth |
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