Synthesis, structural, optical, and electrical properties of L-methioninium nitrate for optoelectronic applications
Single crystals of L-methioninium nitrate were grown by slow evaporation from a 1:1 L-methionine/nitric-acid mixture. X-ray diffraction identified a monoclinic structure with low lattice strain. FTIR supported molecular assignment, photoluminescence showed a broad 330-550 nm emission, and impedance analysis indicated bulk-dominated conduction, non-Debye relaxation and low high-frequency dielectric loss. Second-harmonic generation was also assessed by the Kurtz-Perry powder method.