Structural, vibrational and thermal studies of a new nonlinear optical material: l-Asparagine-l-tartaric acid

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• 作者：K. Moovendaran^a ; Bikshandarkoil R. Srinivasan^b ; J. Kalyana Sundar^c ; S.A. Martin Britto Dhas^d ; S. Natarajan^a ; ^{s_natarajan50@yahoo.com}
• 关键词：Crystal growth ; l-Asparagine l-tartaric acid ; Crystal structure ; Non-linear optical material ; Single crystal
• 刊名：Spectrochimica Acta Part A ; Molecular and Biomolecular Spectroscopy
• 出版年：2012
• 期刊代码：99_13861425
• 类别：ch
• 出版时间：15 June, 2012
• 卷：92
• 期：Complete
• 页码：388-391
• 文件大小：519 K

摘要

Crystals of a new nonlinear optical (NLO) material, viz., l-asparagine-l-tartaric acid (LALT) (dFont">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 P2₁ 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 OH鈰疧, NH鈰疧 and CH鈰疧. The UV-Vis-NIR spectrum of dFont">1 reveals its transparent nature while the vibrational spectra confirm the presence of the functional groups in dFont">1. The thermal stability and second harmonic generation (SHG) conversion efficiency of dFont">1 were investigated.