title: Growth and physicochemical properties of L-phenylalaninium maleate: a novel nonlinear optical crystal.
abstract: Single crystals of novel organic nonlinear optical material, L-phenylalaninium maleate (LPM) having dimensions up to 10 × 6 × 6 mm(3) were grown by slow evaporation solution growth technique at room temperature. The grown crystals were confirmed by single crystal X-ray diffraction studies and the various functional groups were identified by FT-IR spectroscopic analysis. The optical properties were studied by optical absorption, second harmonic generation (SHG), photoconductivity and photoluminescence (PL) studies and reported for the first time. The optical band gap energy and SHG efficiency were found to be 4.85 eV and 1.5 times higher than KDP crystals. Negative photoconducting nature was confirmed by photoconductivity studies. Photoluminescence studies confirm the suitability of the sample for blue and green radiations. The title compound was also subjected to TG/DTA analysis and dielectric studies. Layer like growth pattern was analyzed by SEM micrograph.
authors.affiliation: Department of Physics, Anand Institute of Higher Technology, Chennai 603 103, India. yogamveda@gmail.com
authors.forename: F
authors.initials: F
authors.lastname: Yogam
authors.forename: I
authors.initials: I
authors.lastname: Vetha Potheher
authors.forename: M
authors.initials: M
authors.lastname: Vimalan
authors.forename: R
authors.initials: R
authors.lastname: Jeyasekaran
authors.forename: T
authors.initials: T
authors.lastname: Rajesh Kumar
authors.forename: P
authors.initials: P
authors.lastname: Sagayaraj
mesh_terms: D000042:Absorption; D055598:Chemical Phenomena; D003460:Crystallization; D004055:Differential Thermal Analysis; D004553:Electric Conductivity; D049449:Luminescence; D008298:Maleates / Q000737:chemistry*; D008855:Microscopy, Electron, Scanning; D017711:Nonlinear Dynamics; D055620:Optical Phenomena; D010649:Phenylalanine / Q000031:analogs & derivatives* / Q000737:chemistry; D013056:Spectrophotometry, Ultraviolet; D017550:Spectroscopy, Fourier Transform Infrared; D013818:Thermogravimetry; D014961:X-Ray Diffraction
chemical_list: C575666:L-phenylalaninium maleate; D008298:Maleates; D010649:Phenylalanine