A comparative study on the growth and characterization of nonlinear optical amino acid crystals: l-Alanine (LA) and l-alanine alaninium nitrate (LAAN)

A. , Aravindan and P. , Srinivasan and N. , Vijayan and R. , Gopalakrishnan and P. , Ramasamy (2007) A comparative study on the growth and characterization of nonlinear optical amino acid crystals: l-Alanine (LA) and l-alanine alaninium nitrate (LAAN). Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 71 (2). pp. 297-304. ISSN 1386-1425

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Official URL: http://dx.doi.org/10.1016/j.saa.2007.12.023

Abstract

A comparative study on the properties of l-alanine and LAAN crystals has been made and discussed. It may be concluded that the protonation of the amino group in the l-alanine molecule is the key factor in increasing the relative SHG efficiency of LAAN. The protonation is justified by the crystal structure analysis, FTIR and photoluminescence studies. The factor group vibrations are compared and found that there is an increase in vibrational modes of LA when reacted with nitric acid forming LAAN.

Item Type:	Article
Additional Information:	Copyright for this article belongs to M/s Elsevier B.V.
Uncontrolled Keywords:	Solution growth; Photoluminescence; Second harmonic generation; X-ray diffraction
Subjects:	Biochemistry & Molecular Biology Biophysics Chemistry Physics Spectroscopy
Divisions:	UNSPECIFIED
Depositing User:	Ms Neetu Chandra
Date Deposited:	22 Nov 2012 12:46
Last Modified:	22 Nov 2012 12:46
URI:	http://npl.csircentral.net/id/eprint/842

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