title: Crystal growth, spectral, structural and optical studies of π-conjugated stilbazolium crystal: 4-bromobenzaldehyde-4'-N'-methylstilbazolium tosylate.
abstract: Nonlinear optical (NLO) organic compound, 4-bromobenzaldehyde-4'-N'-methylstilbazolium tosylate was synthesized by reflux method. The formation of molecular complex was confirmed from (1)H NMR, FT-IR and FT-Raman spectral analyses. The single crystals were grown by slow evaporation solution growth method and the crystal structure and atomic packing of grown crystal was identified. The morphology and growth axis of grown crystal were determined. The crystal perfection was analyzed using high resolution X-ray diffraction study on (001) plane. Thermal stability, decomposition stages and melting point of the grown crystal were analyzed. The optical absorption coefficient (α) and energy band gap (E(g)) of the crystal were determined using UV-visible absorption studies. Second harmonic generation efficiency of the grown crystal was examined by Kurtz powder method with different particle size using 1064 nm laser. Laser induced damage threshold study was carried out for the grown crystal using Nd:YAG laser.
authors: Department of Physics, Presidency College, Chennai 600 005, India.
authors: M
authors: M
authors: Krishna Kumar
authors: Department of Physics, Presidency College, Chennai 600 005, India.
authors: S
authors: S
authors: Sudhahar
authors: Materials Characterization Division, National Physical Laboratory, New Delhi 110 012, India.
authors: G
authors: G
authors: Bhagavannarayana
authors: Department of Physics, Presidency College, Chennai 600 005, India. Electronic address: mohan66@hotmail.com.
authors: R
authors: R
authors: Mohan Kumar
mesh_terms: D001547:Benzaldehydes / Q000737:chemistry*; D001597:Benzylidene Compounds / Q000737:chemistry*; D002152:Calorimetry, Differential Scanning; D002412:Cations; D003460:Crystallization; D004055:Differential Thermal Analysis; D007834:Lasers; D009682:Magnetic Resonance Spectroscopy; D008968:Molecular Conformation; D017711:Nonlinear Dynamics; D010316:Particle Size; D017785:Photons; D012995:Solubility; D013056:Spectrophotometry, Ultraviolet; D017550:Spectroscopy, Fourier Transform Infrared; D013059:Spectrum Analysis, Raman; D013696:Temperature; D013818:Thermogravimetry; D014105:Tosyl Compounds / Q000737:chemistry*; D014732:Vibration; D014961:X-Ray Diffraction
chemical_list: C000593163:4-bromobenzaldehyde-4'-N'-methylstilbazolium tosylate; D001547:Benzaldehydes; D001597:Benzylidene Compounds; D002412:Cations; D014105:Tosyl Compounds
keywords: Bond-length alternation; Crystal morphology; Infrared and Raman spectroscopy; Organic compounds; Photoluminescence; Solution grown crystals