title: Synthesis, crystal growth, structural, thermal, optical and mechanical properties of solution grown 4-methylpyridinium 4-hydroxybenzoate single crystal.
abstract: Organic nonlinear optical material, 4-methylpyridinium 4-hydroxybenzoate (4MPHB) was synthesized and single crystal was grown by slow evaporation solution growth method. Single crystal and powder X-ray diffraction analyses confirm the structure and crystalline perfection of 4MPHB crystal. Infrared, Raman and NMR spectroscopy techniques were used to elucidate the functional groups present in the compound. TG-DTA analysis was carried out in nitrogen atmosphere to study the decomposition stages, endothermic and exothermic reactions. UV-visible and Photoluminescence spectra were recorded for the grown crystal to estimate the transmittance and band gap energy respectively. Linear refractive index, birefringence, and SHG efficiency of the grown crystal were studied. Laser induced surface damage threshold and mechanical properties of grown crystal were studied to assess the suitability of the grown crystals for device applications.
authors.affiliation: Department of Physics, Presidency College, Chennai 600 005, India.
authors.forename: S
authors.initials: S
authors.lastname: Sudhahar
authors.forename: M
authors.initials: M
authors.lastname: Krishna Kumar
authors.forename: B M
authors.initials: BM
authors.lastname: Sornamurthy
authors.forename: R
authors.initials: R
authors.lastname: Mohan Kumar
mesh_terms: D003460:Crystallization; D018360:Crystallography, X-Ray; D006244:Hardness; D049449:Luminescence; D009682:Magnetic Resonance Spectroscopy; D008745:Methylation; D008958:Models, Molecular; D010226:Parabens / Q000737:chemistry*; D011725:Pyridines / Q000737:chemistry*; D012031:Refractometry; D017550:Spectroscopy, Fourier Transform Infrared; D013059:Spectrum Analysis, Raman; D013818:Thermogravimetry
chemical_list: D010226:Parabens; D011725:Pyridines; C038193:4-hydroxybenzoic acid
keywords: Birefringence; Crystal structure; NLO material; Spectral analysis; Thermal analysis