合成、生长、结构、光谱和光学研究半有机 NLO 晶体：磷酸胍锌。
Synthesis, growth, structural, spectroscopic and optical studies of a semiorganic NLO crystal: zinc guanidinium phosphate.
机构信息
Post Graduate & Research Department of Physics, Pachaiyappa's College, Chennai 600 030, India.
出版信息
Spectrochim Acta A Mol Biomol Spectrosc. 2012 Feb;86:266-70. doi: 10.1016/j.saa.2011.10.034. Epub 2011 Oct 20.
The semi-organic nonlinear optical (NLO) crystal, zinc guanidinium phosphate (ZGuP) has been grown through synthesis between zinc sulphate, guanidine carbonate and orthophosphoric acid from its aqueous solution by slow solvent evaporation technique. Solubility of the synthesized material has been determined for various temperatures using water as solvent. The grown crystal has been characterized by powder X-ray diffraction to confirm the crystal structure. Investigation has been carried out to assign the vibrational frequencies of the grown crystals by Fourier transform infrared spectroscopy technique. (1)H and (13)C FT-NMR have been recorded to elucidate the molecular structure. The optical absorption study confirms the suitability of the crystal for device applications. The second harmonic generation (SHG) efficiency of ZGuP is found to be 1.825 times that of potassium dihydrogen phosphate (KDP). Thermal behavior of the grown crystals has been studied by thermogravimetric and differential thermal analysis. The mechanical properties of the grown crystals have been studied using Vickers microhardness tester.
半有机非线性光学（NLO）晶体——磷酸锌胍（ZGuP），是通过在水溶液中用硫酸锌、碳酸胍和正磷酸合成得到的，采用的是缓慢溶剂蒸发技术。使用水作为溶剂，测定了合成材料在不同温度下的溶解度。通过粉末 X 射线衍射对生长晶体进行了表征，以确认晶体结构。通过傅里叶变换红外光谱技术对生长晶体的振动频率进行了研究。（1）H 和（13）C FT-NMR 被记录下来以阐明分子结构。光学吸收研究证实了该晶体适用于器件应用。ZGuP 的二次谐波产生（SHG）效率是磷酸二氢钾（KDP）的 1.825 倍。通过热重分析和差热分析研究了生长晶体的热行为。使用维氏硬度计研究了生长晶体的机械性能。
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