Abstract

A novel organic crystal namely (2E, 4E)-[dimethylamino) phenyl]-1-(4methylphenyl) penta-2, 4-dien-1-one has been grown successfully from the slow evaporation method. The single-crystal X-ray diffraction study revealed that the compound belongs to the orthorhombic crystallographic system with non-centrosymmetric P₂₁₂₁₂₁ space group with lattice parameters α = 7.1354(3) Å, β = 11.2112(7) Å and 20.0744(11) Å. The thermal properties have been studied by using Thermo Gravimetric (TG) and Differential Scanning calorimetry (DSC). The second harmonic generation (SHG) efficiency of the compound is 2.9 times that of urea for Nd-YAG laser operating at wavelength 1064 nm. We also report the results of thermally induced third-order nonlinear optical (NLO) properties of NLO material investigated by Z-scan technique using continuous wave (CW) laser. The calculated values of \( \chi_{R}^{(3)} \,({\text{esu}}) \), \( \chi_{i}^{(3)} \,({\text{esu}}) \) and \( \chi^{(3)} \) are of the order of 10⁻⁷esu, 10⁻⁸ esu and 10⁻⁷ esu, respectively. The estimated value of the non-linear refractive index is found to be − 4.21 × 10⁻⁸ cm²/W. The compound also exhibits promising optical limiting properties at 532 nm wavelength.

Graphic abstract

The synthesis and structural characterization of a new D-π-A-π-D Nonlinear Optical material namely (2E, 4E)-[dimethylamino) phenyl]-1-(4methylphenyl)penta-2,4-dien-1-one Crystal is reported. The material can be utilized for both second and third-order nonlinear applications.

中文翻译：

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新颖的偏心D-π-A-π-D非线性光学（2E，4E）-[二甲氨基）苯基] -1-（4甲基苯基）戊-2,4-二烯-1-晶体用于二阶和三阶非线性应用

摘要

通过缓慢蒸发法已经成功地生长了一种新颖的有机晶体，即（2E，4E）-[二甲基氨基）苯基] -1-（4甲基苯基）penta-2，4-二烯-1-酮。X射线单晶衍射研究表明该化合物属于正交_各向异性P ₂₁₂₁₂₁的正交晶系。晶格参数为α= 7.1354（3），β= 11.2112（7）Å和20.0744（11）的空间群。通过使用热重（TG）和差示扫描量热法（DSC）研究了热性能。对于波长为1064 nm的Nd-YAG激光器，该化合物的二次谐波生成（SHG）效率是尿素的2.9倍。我们还报告了通过使用连续波（CW）激光的Z扫描技术研究的NLO材料的热诱导三阶非线性光学（NLO）特性的结果。的计算值\（\ chi_ {R} ^ {（3）} \，（{\文本{ESU}}）\），\（\ chi_ {I} ^ {（3）} \，（{\文本{esu}}）\）和\（\ chi ^ {（3）} \）的顺序为10 ^-7 esu，10 ^-8 esu和10 ^-7分别。发现非线性折射率的估计值为-4.21×10 ^-8  cm ² / W。该化合物还在532 nm波长处显示出有希望的光学限制特性。

图形摘要

新型D-π-A-π-D非线性光学材料（2E，4E）-[[二甲基氨基）苯基] -1-（4甲基苯基）戊-2,4-二烯-1-酮晶体的合成与结构表征被报道。该材料可用于二阶和三阶非线性应用。