title: Structural, vibrational and thermal studies of a new nonlinear optical material: L-asparagine-L-tartaric acid.
abstract: Crystals of a new nonlinear optical (NLO) material, viz., L-asparagine-L-tartaric acid (LALT) (1) were grown by slow evaporation of an aqueous solution containing equimolar concentrations of L-asparagine and L-tartaric acid. The structure of the title compound which crystallizes in the non-centrosymmetric monoclinic space group P2(1) consists of a molecule of L-asparagine and a molecule of free l-tartaric acid both of which are interlinked by three varieties of H-bonding interactions namely O-H···O, N-H···O and C-H···O. The UV-Vis-NIR spectrum of 1 reveals its transparent nature while the vibrational spectra confirm the presence of the functional groups in 1. The thermal stability and second harmonic generation (SHG) conversion efficiency of 1 were investigated.
authors.affiliation: Department of Physics, Madurai Kamaraj University, Madurai, India.
authors.forename: K
authors.initials: K
authors.lastname: Moovendaran
authors.forename: Bikshandarkoil R
authors.initials: BR
authors.lastname: Srinivasan
authors.forename: J
authors.initials: J
authors.lastname: Kalyana Sundar
authors.forename: S A
authors.initials: SA
authors.lastname: Martin Britto Dhas
authors.forename: S
authors.initials: S
authors.lastname: Natarajan
mesh_terms: D001216:Asparagine / Q000737:chemistry*; D003460:Crystallization; D006860:Hydrogen Bonding; D008958:Models, Molecular; D055620:Optical Phenomena; D017550:Spectroscopy, Fourier Transform Infrared; D013644:Tartrates / Q000737:chemistry*; D013696:Temperature
chemical_list: D013644:Tartrates; D001216:Asparagine; C029768:tartaric acid