ABSTRACT A organic nonlinear optical material, L-alanine maleate (LALM) was synthesized. Bulk Single crystals of LALM have been grown by slow cooling method with a solution pH of 5. The solubility of L-alanine maleate has been deter-mined for various temperatures. Large size sin-gle crystal of 2.0 x 1.2 x 0.8 cm3 has been grown with reasonable growth rate along the three crystallographic directions by optimizing the growth parameters. The structure of LALM crys- tal was studied by single-crystal X-ray diffrac-tion analysis. The presence of functional groups was confirmed by Fourier transform infrared spectroscopy. The LALM crystal was analysed for its thermal and mechanical behaviours. The grown crystals have also been subjected to linear and non-linear optical property studies. From these studies, it is inferred that the LALM crystals exhibit better thermal and mechanical stabilities with improved optical properties. Thus satisfies the essential requirements for optical device fabrication.
Cite this paper
nullBalasubramanian, D. , Jayavel, R. and Murugakoothan, P. (2009) Studies on the growth aspects of organic L-alanine maleate: a promising nonlinear optical crystal. Natural Science, 1, 216-221. doi: 10.4236/ns.2009.13029.
 N. B. Singh, T. Henningsen, R. H. Hopkins, R. Mazelsky, R. D. Hamacher, E. P. Supertzi, F. K. Hopkins, D. Zel-mon, and E. O. P. Singh, (1993) Nonlinear optical char-acteristics of binary organic system. J. Cryst. Growth, 128, 976-980.
D. S. Chemla and J. Zyss, (1987) Nonlinear optical properties of organic molecules and crystals. 1 & 2, Aca-demic Press, New York.
J. Badan, R. Hierle, A. Perigaud, J. Zyss, and D. J. Wil-liams, (1993) Nonlinear optical properties of organic molecules and polymeric materials. American Chemical Society, Washington, DC, American Chemical Sym- po-sium Series, 233.
R. Rajasekaran, P. M. Ushasree, R. Jayavel, and P. Rama-samy, (2001) Growth and characterization of zinc thio-urea chloride (ZTC): A semiorganic nonlinear optical crystal. J. Cryst. Growth, 229, 563-567.
D. Xu, M. Jiang, and Z. Tan, (1983) A new phase matchable nonlinear optical crystal L-arginine phosphate monohydrate, Acta Chem.Sinica, 41, 570-573.
E. Espinosa, B. Wyncke, F. Bréhat, X. Gerbaux, S. Vein-temillas, and E. Molins, (1997) Infrared vibrational spec-tra of L-histidinium dihydrogen orthophosphate ortho-phosphoric acid (LHP). Infrared Physics & Technology, 38, 449-458.
D. R. Babu, D. Jayaraman, R. M. Kumar, G. Ravi, and R. Jayavel, (2003) Growth aspects of semi-organic non- linear optical L-arginine tetrafluoroborate single crystals, Journal of Crystal Growth, 250, 157-161.
D. R. Babu, D. Jayaraman, R. M. Kumar, and R. Jayavel, (2002) Growth and characterization of non-linear optical L-alanine tetrafluoroborate (L-AlFB) single crystals, J. Crystal Growth, 245, 121-125.
C. Razzetti, M. Ardoino, L. Zanotti, M. Zha, and C. Pao-rici, (2002) Solution growth and characterisation of l-alanine single crystals. Cryst. Res. Technol, 37, 456- 465.
R. Muralidharan, R. Mohankumar, R. Jayavel, and P. Ramasamy, (2003) Growth and characterization of L-arginine acetate single crystals: A new NLO material. J. Cryst. Growth, 259, 321-325.
R. M. Kumar, D. R. Babu, D. Jayaraman, R. Jayavel, and K. Kitamura, (2005) Studies on the growth aspects of semi-organic l-alanine acetate: A promising NLO crystal, J. Crystal Growth, 275, 1935-1939.
S. A. Natarajan, S. M. Britto, and E. Ramachandran (2006) Growth, thermal, spectroscopic, and optical stud-ies of l-alaninium maleate, a new organic nonlinear opti-cal material. Crystal Growth & Design, 6(1), 137-140.
M. N. G. James and G. J. B. Williams, (1974) A refine-ment of the crystal structure of Maleic Acid. Acta Cryst. B30, 1249-1257.
K. Nakamoto, (1970) Infrared spectra of inorganic and coordination compounds. Wiley-Interscience, New York, 233.
D. R. Babu, (2003) Ph.D Thesis, University of Madres, India.