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.
Key findings
- Slow evaporation produced low-strain monoclinic crystals. • Photoluminescence spanned 330-550 nm. • Impedance and dielectric behavior support optoelectronic potential.
Why this matters globally
The work adds a semiorganic candidate for photonic and nonlinear-optical devices, but application claims require comparative device efficiency and stability testing.
Thai researcher contribution
A Yala Rajabhat University-affiliated researcher contributes to optoelectronic materials and crystal characterization.
Limitations to consider
The abstract omits comparative SHG efficiency, long-term stability, photodamage thresholds and prototype-device performance.