title: Spectroscopic and optical studies on pure and doped single crystals of sulphate-mixed L-arginine phosphate monohydrate--a nonlinear optical crystal.
abstract: Single crystals of pure and transition metal ions (Cu(2+) and VO(2+))-doped L-arginine sulpho phosphate monohydrate (sulphate-mixed L-arginine phosphate monohydrate, abbreviated as LASP) have been grown by solvent evaporation of the saturated aqueous solution at room temperature and characterized by single-crystal XRD, FT-IR, UV-Vis-NIR and EPR (single-crystal rotation) spectral studies. Kurtz powder technique shows an enhanced second harmonic generation (SHG) efficiency for LASP and its doped analogues than pure LAP. The EPR studies on LASP:VO(2+) reveal that the in-plane sigma-bonding is moderately covalent and the out-of-plane pi-bonding is highly covalent, which could be attributed to the cause of enhanced powder efficiency.
authors.affiliation: Department of Physics, Bharathidasan University, Tiruchirapalli 620024, India. dhanus_phy@yahoo.co.in
authors.forename: S
authors.initials: S
authors.lastname: Dhanuskodi
authors.forename: P A
authors.initials: PA
authors.lastname: Angeli Mary
authors.forename: K
authors.initials: K
authors.lastname: Vasantha
mesh_terms: D001120:Arginine / Q000031:analogs & derivatives* / Q000737:chemistry*; D018360:Crystallography, X-Ray; D009943:Organophosphorus Compounds / Q000737:chemistry*; D013057:Spectrum Analysis; D013431:Sulfates / Q000737:chemistry*
chemical_list: D009943:Organophosphorus Compounds; D013431:Sulfates; C015441:phospho-L-arginine; D001120:Arginine