標題: Characterization of a newly synthesized organic nonlinear optical crystal: benzoyl valine
作者: Kumar, T. K.
Selvaraj, R. S.
Janarthanan, S.
Rajan, Y. C.
Selvakumar, S.
Pandi, S.
Selvakumar, M. S.
Anand, D. P.
材料科學與工程學系
Department of Materials Science and Engineering
公開日期: 1-五月-2010
摘要: Herein the synthesis and the crystal growth of benzoyl valine (BV), an organic nonlinear optical (NLO) material for frequency conversion was grown by slow evaporation solution growth technique at room temperature has been reported. The compound was prepared by Stockman method of benzoylation. The solubility curve shows linear nature up to a temperature of 313 K. XRD study reveals that the crystal belongs to monoclinic system with P2(1) non-centrosymmetric space group. The fundamental vibrational frequency of various functional groups (400-4000 cm(-1)) in the crystal was determined from FTIR analysis. (1)H and (13)C NMR spectral studies reveal the presence of proton and carbon network in the grown crystalline sample. The optical behaviour of the crystal was ascertained by optical UV absorption spectral studies. The UV cut off region (gimel(max)) lies around 200 nm and the crystal is absolutely transparent from 220800 nm suggesting its application as NLO material. The thermal stability of the crystal was determined by thermogravimetric and differential thermal analyses. Laser damage threshold of BV was found to be 0.34 GW/cm(2) and hence BV can be used in frequency doubler system. Photoconductivity study of BV revealed negative photoconductiviting nature of the sample. The microhardness studies confirm that BV has a moderate Vickers hardness number (VHN) value in comparison to the other organic NLO crystals.
URI: http://dx.doi.org/10.1051/epjap/2010033
http://hdl.handle.net/11536/5437
ISSN: 1286-0042
DOI: 10.1051/epjap/2010033
期刊: EUROPEAN PHYSICAL JOURNAL-APPLIED PHYSICS
Volume: 50
Issue: 2
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