Effect of rare earth rubidium chloride on the optical, mechanical and antifungal behaviours of L-lysine monohydrochloride crystal for photonics and medical application

L-Lysine monohydrochloride and rubidium chloride doped L-Lysine monohydrochloride crystals with high optical, mechanical and antifungal were grown by slow evaporation techniques. The Single crystal XRD ascertained the monoclinic structure and the crystals were grown with lesser grain boundaries. Functional groups and existence of Rb was confirmed by FTIR and EDX. Grown crystals exhibit good transmittance than pure in UV-Visible region and the band gap of pure and doped crystals are 5.30 eV and 5.94 eV. Mechanical property of doped crystal was significantly improved due to RbCl doping and it lead the crystal for device fabrication. Nonlinear optical property of the grown crystals were surpassing than KDP and confirmed by Kurtz Perry technique. The Rb added crystal pronounced excessive inhibitory action towards pathogenic fungus like Candida albicans, Candida parapsilosis and Aspergillus Flaves than pure L-LMHCL crystal. (c) 2021 The Author(s). Published by Elsevier B.V. on behalf of King Saud University. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).

Automated summary

L-Lysine monohydrochloride and rubidium chloride doped L-Lysine monohydrochloride crystals were successfully grown using slow evaporation techniques. The doped crystals exhibited improved optical, mechanical, and antifungal properties, with high transmittance and a larger band gap compared to the pure crystals. The mechanical property of the doped crystals was significantly enhanced, making them suitable for device fabrication, and they also demonstrated superior nonlinear optical properties. Additionally, the doped crystals showed enhanced inhibitory action against pathogenic fungi compared to the pure L-LMHCL crystal.