%0 Journal Article
%T Growth and Characterization of a New Organic Non-Linear Optical (NLO) Material: L-Histidinium Trifluoroacetate
%A S.A. Martin Britto Dhas
%A J. Suresh
%A G. Bhagavannarayana and S. Natarajan
%J The Open Crystallography Journal
%D 2008
%I 
%R 10.2174/1874846500801010046]
%X A new organic nonlinear optical (NLO) material L-Histidinium trifluoroacetate was crystallized using LHistidine and trifluoroacetic acid in 1:1 stoichiometric ratio in water-ethanol medium. X-ray diffraction analysis of the single crystals showed that they belong to triclinic system, space group P1, with two molecules per unit cell. The lattice parameters are a = 5.1673(2)  , b = 8.8393(3)  , c = 12.4837(6)  , ¦Á = 96.190(3)¡ã, ¦Â= 100.020(3)¡ã and ¦Ã =102.010 (3)¡ã. The molecules are held together by a three-dimensional network of hydrogen bonds. The crystalline perfection was studied by high resolution X-ray diffraction. The second harmonic generation (SHG) efficiency was measured by Kurtz and Perry method. The FTIR, UV-Vis-NIR spectra and TGA/DTA were recorded and studied. Vickers microhardness measurement was also carried out.
%U http://www.benthamscience.com/open/tocryj/articles/V001/46TOCRYJ.htm