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Crystal growth, thermal and optical studies of L-histidine tetrafluoroborate: A semiorganic NLO material

✍ Scribed by S. Dhanuskodi; J. Ramajothi

Publisher
John Wiley and Sons
Year
2004
Tongue
English
Weight
119 KB
Volume
39
Category
Article
ISSN
0232-1300

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✦ Synopsis

Abstract

L‐histidine tetrafluoroborate (L‐HFB), a semiorganic nonlinear optical (NLO) material has been synthesized and characterized by elemental analysis and FT–NMR spectroscopic studies. Solubility of L‐HFB has been determined in water and ethanol. The single crystals with dimensions 15 x 12 x 3 mm^3^ were grown by slow evaporation technique under two different pH conditions. The effect of pH on the morphology of the crystals have been studied. The grown crystals of both pH values has been subjected to single crystal X‐ray diffraction to determine the unit cell dimensions and morphology. The thermal stability has been analyzed by TGA and DTA. The microhardness test was carried out in (001) plane and the hardness coefficient was calculated. The birefringence values (Δ~n~) were determined in the wavelength region 5540–6460 Å. (© 2004 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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