Synthesis and Characterization of a New Non-Linear Optical Material: (4-Chlorophenyl)(4-Hydroxypiperidin-1-yl) Methanone

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.

Keywords:

• SHG efficiency
• single-crystal XRD
• ¹HNMR
• FTIR
• TG/DTA
• vickers microhardness

Acknowledgement

The authors wish to thank, Central Instrumentation Facility, Queen Mary’s College, Chennai-04; and SAIF, IIT-Madras, Chennai-36, for X-ray data collection facility.

Disclosure statement

No potential conflict of interest was reported by the author(s).