title: Growth and characterization of organic non-linear optical crystal 4-hydoroxy benzaldehyde-N-methyl 4-stilbazolium tosylate (HBST).
abstract: The 4-hydroxy benzaldehyde-N-methyl 4-stilbazolium tosylate (HBST), a good non-linear optical (NLO) crystal has been synthesized and the single crystal has been grown by slow evaporation method. In this work we have used ethyl acetate mixed methanol (1:1 ratio) as solvent. The lattice parameters were calculated from the powder X-ray diffraction patterns and compared with previous reports. The crystalline perfection has been verified with multicrystal X-ray diffractometer. The functional groups were identified from FTIR and NMR spectral studies. In order to know the optical quality of the grown crystal, the UV-Vis-NIR absorption spectrum was recorded and optical transition energy levels were also calculated. The thermal properties were analyzed from TG/DTA data. The relative SHG efficiency was compared with urea by Kurtz powder method.
authors.affiliation: Department of Physics, Saraswathi Velu College of Engineering, Vellore 631 102, India.
authors.forename: K
authors.initials: K
authors.lastname: Jagannathan
authors.forename: S
authors.initials: S
authors.lastname: Kalainathan
authors.forename: G
authors.initials: G
authors.lastname: Bhagavannarayana
mesh_terms: D000327:Adsorption; D001547:Benzaldehydes / Q000032:analysis* / Q000737:chemistry*; D003460:Crystallization; D009930:Organic Chemicals / Q000032:analysis* / Q000737:chemistry*; D013057:Spectrum Analysis; D013696:Temperature; D014961:X-Ray Diffraction
chemical_list: C541156:4-hydoroxy benzaldehyde-N-methyl 4-stilbazolium tosylate; D001547:Benzaldehydes; D009930:Organic Chemicals