有机非线性光学晶体对氨基偶氮苯的晶体生长、振动及光学性质研究
Studies on crystal growth, vibrational and optical properties of organic nonlinear optical crystal: p-aminoazobenzene.
作者信息
Eazhilarasi G, Nagalakshmi R, Krishnakumar V
机构信息
Department of Physics, Periyar University, Salem 636 011, India.
出版信息
Spectrochim Acta A Mol Biomol Spectrosc. 2008 Nov 15;71(2):502-7. doi: 10.1016/j.saa.2007.12.049. Epub 2008 Jan 19.
p-Aminoazobenzene (p-AAZB), an organic nonlinear optical (NLO) crystal having good optical quality has been grown by slow evaporation solution technique using ethanol as a solvent. Solubility studies were performed at different temperatures. The structural characterization of the grown crystals was carried out by X-ray diffraction. Group theoretical analysis was carried out to calculate the number of modes of vibration. The lowering of the wave numbers of azo group suggests the existence of strong intermolecular N-H...H hydrogen bonding. This has been analysed based on the vibrational spectral features. Optical absorption studies show the effective transmission in the entire UV-vis region. The second harmonic generation results show the suitability of this material for NLO applications.
对氨基偶氮苯（p-AAZB）是一种具有良好光学质量的有机非线性光学（NLO）晶体，采用乙醇作为溶剂，通过缓慢蒸发溶液技术生长而成。在不同温度下进行了溶解度研究。通过X射线衍射对生长的晶体进行了结构表征。进行了群论分析以计算振动模式的数量。偶氮基团波数的降低表明存在强分子间N-H...H氢键。基于振动光谱特征对此进行了分析。光吸收研究表明在整个紫外-可见区域具有有效的透射率。二次谐波产生结果表明该材料适用于NLO应用。
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