Abstract

A new organic and nonlinear optical material namely (4-chlorophenyl) (4-hydroxypiperidin-1-yl) methanone [HPCP] was synthesized from the mixture of 4-hydroxypiperidiene, triethylamine, and 4-chlorobenzoyl chloride by solution growth technique. The 3D structure of the title crystal has been derived using the X-ray diffraction (XRD) spectrum. The compound was crystallized in the orthorhombic crystal system with non-centrosymmetric space group Pca2₁. Optical properties of the as-grown compound have been elucidated through ¹H-NMR, UV-Visible, FTIR, and PL spectral studies. The melting point, stages of mass decay, and thermal stability of the synthesized material were obtained by TG/DTA thermal analysis. Vickers microhardness test was performed to comprehend its mechanical strength. The second harmonic generation (SHG) efficiency was estimated by employing Q-switched high energy, Nd: YAG the laser source, and the SHG efficiency was found to be 1.73 times that of KDP, the reference crystal.

摘要

以4-羟基哌啶、三乙胺和4-氯苯甲酰氯的混合物为原料，采用溶液生长技术合成了一种新型有机非线性光学材料，即(4-氯苯基)(4-羟基哌啶-1-基)甲酮[HPCP]。标题晶体的 3D 结构是使用 X 射线衍射 (XRD) 光谱得出的。该化合物呈斜方晶系结晶，具有非中心对称空间群Pca2 ₁。所生成的化合物的光学性质已通过^1阐明H-NMR、紫外-可见光、FTIR 和 PL 光谱研究。通过TG/DTA热分析获得了合成材料的熔点、质量衰减阶段和热稳定性。进行维氏显微硬度测试以了解其机械强度。采用Q开关高能Nd:YAG激光源估算了二次谐波发生(SHG)效率，结果发现SHG效率是参考晶体KDP的1.73倍。