St. Joseph's College of Engineering & Technology, Thanjavur 613 403, Tamil Nadu, India.
Spectrochim Acta A Mol Biomol Spectrosc. 2012 Nov;97:1120-4. doi: 10.1016/j.saa.2012.07.134. Epub 2012 Aug 8.
Single crystals of organic optical material, diglycine fumarate monohydrate (DGFM) has been synthesized and grown from solution by slow evaporation solution growth method. Purity of synthesized materials was increased by continuous recrystallization. The lattice parameters of the grown crystals are observed by X-ray diffraction method and the crystal system of grown crystal is identified as monoclinic. The optical transparency range has been investigated by UV-Vis-NIR spectroscopy method in the range between 190 and 1,100 nm. The presence of different modes of vibrations is analyzed using FT-IR technique. The carbon and hydrogen atmosphere in molecular structure of DGFM is investigated using FT-NMR method. The thermogravimetrrc analysis (TGA), differential thermal analysis (DTA) and differential scanning calorimetry (DSC) analysis shows that the grown crystal has very good thermal stability up to 263°C. The Kurtz-Perry powder SHG test has done for grown crystals.
采用溶液缓慢蒸发法，从溶液中合成并生长出有机光学材料富马酸二甘氨酸单水合物（DGFM）的单晶。通过连续重结晶提高了合成材料的纯度。通过 X 射线衍射法观察了生长晶体的晶格参数，确定生长晶体的晶系为单斜晶系。通过紫外-可见-近红外光谱法在 190 至 1100nm 范围内研究了光学透明范围。使用傅里叶变换红外光谱（FT-IR）技术分析了不同振动模式的存在。使用傅里叶变换核磁共振（FT-NMR）方法研究了 DGFM 分子结构中的碳氢气氛。热重分析（TGA）、差热分析（DTA）和差示扫描量热法（DSC）分析表明，生长晶体在 263°C 以下具有非常好的热稳定性。对生长晶体进行了库尔茨-珀尔（Kurtz-Perry）粉末倍频 SHG 测试。
