Investigation on the Effects of MnCl2 Doping on Structural and Optical Properties of DAST Single Crystals as Materials for Second Order Nonlinear Optics,Crystal Research and Technology

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Investigation on the Effects of MnCl2 Doping on Structural and Optical Properties of DAST Single Crystals as Materials for Second Order Nonlinear Optics
Crystal Research and Technology ( IF 1.5 ) Pub Date : 2021-06-25 , DOI: 10.1002/crat.202100016
Thirumuruganantham Sivakumar ₁ , Palaniyasan Eniya ₁ , Jeyaperumal Kalyana Sundar ₁ , Arisiappan Thirunavukkarasu ₂ , Muppudathi Anna Lakshmi ₃ , Gomathinayagam Kanthimathi ₄

Affiliation

The intent is to explore the optoelectronic properties of metal ions doped stilbazolium derivative, 4-N,N′-dimethylamino-N-methyl-4-stilbazolium tosylate (MnCl₂-DAST) nonlinear optical crystal materials for the existing technological necessities. The Mn-DAST single crystals are crystallized by adopting the slow evaporation solution technique (SEST). The structural and crystallographic dimensions of grown crystals are affirmed using single-crystal X-ray diffraction and powder crystal X-ray diffraction. Fourier transform infrared spectra are performed to explicate the functional groups and energy dispersive X-ray analysis (EDAX) spectra confirm the presence of the chemical elements of grown crystals. The UV–vis absorption spectra of DAST and Mn-DAST crystals exhibit all possible n–π* and π–π* electronic transitions. The blue shift is observed in the doped materials due to the exchange of lone pair electrons between the metal ions and organic molecule. Tremendously, the second order harmonic generation (SHG) efficiency of Mn (0.01 mol%) doped DAST crystals has 1.68 times larger than that of DAST crystal. From the metal-organic crystals (Mn-DAST), all the results brought out are the promising materials in the design of nonlinear optical applications.

中文翻译：

MnCl2 掺杂对作为二阶非线性光学材料的 DAST 单晶结构和光学性能影响的研究

目的是探索金属离子掺杂的 stilbazolium 衍生物 4- N , N ' -二甲氨基-N -methyl-4-stilbazolium tosylate (MnCl ₂-DAST)非线性光学晶体材料为现有技术必需品。Mn-DAST单晶采用慢蒸发溶液技术（SEST）结晶。使用单晶 X 射线衍射和粉末晶体 X 射线衍射确认生长晶体的结构和晶体尺寸。执行傅里叶变换红外光谱以解释官能团，能量色散 X 射线分析 (EDAX) 光谱证实生长晶体的化学元素的存在。DAST 和 Mn-DAST 晶体的紫外可见吸收光谱显示出所有可能的n–π* 和 π–π* 电子跃迁。由于金属离子和有机分子之间的孤对电子交换，在掺杂材料中观察到蓝移。Mn (0.01 mol%) 掺杂的 DAST 晶体的二次谐波产生 (SHG) 效率是 DAST 晶体的 1.68 倍。从金属有机晶体（Mn-DAST）中得出的所有结果都是非线性光学应用设计中很有前途的材料。

更新日期：2021-06-25

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