Comparative studies on formation and material characterization of L-histidine derivatives for nonlinear optical device applications

In this study, nonlinear optical crystalline materials L-histidinium hydrochloride monohydrate (LHHCL) and L-histidinium methyl ester dihydrochloride (LHMDHCL) were successfully grown by slow solvent evaporation technique. As-grown crystalline materials were subjected to X-ray structure analysis, FT...

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Bibliographic Details
Published in:Journal of materials science. Materials in electronics 2022-02, Vol.33 (6), p.2970-2979
Main Authors: Albert, Helen Merina, Gonsago, C. Alosious
Format: Article
Language:English
Subjects:
Characterization and Evaluation of Materials
Chemical composition
Chemistry and Materials Science
Comparative studies
Crystal growth
Crystal structure
Crystallinity
Crystallization
Crystals
Diamond pyramid hardness
Dielectric loss
Dielectric properties
Energy dispersive X ray spectroscopy
Frequency analysis
Histidine
Indentation
Materials Science
Nonlinear optics
Optical and Electronic Materials
Raman spectroscopy
Size effects
Spectroscopic analysis
Spectrum analysis
Structural analysis
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Summary:In this study, nonlinear optical crystalline materials L-histidinium hydrochloride monohydrate (LHHCL) and L-histidinium methyl ester dihydrochloride (LHMDHCL) were successfully grown by slow solvent evaporation technique. As-grown crystalline materials were subjected to X-ray structure analysis, FT-Raman spectroscopy, energy-dispersive X-ray spectroscopy, UV–Vis spectroscopy, frequency conversion analysis, dielectric and Vicker’s microhardness studies. According to XRD data, the grown crystal LHHCL was crystallized to an orthorhombic form having a space group P2 1 2 1 2 1 , while LHMDHCL crystal belongs to a monoclinic form with a space group P2 1 . The FT-Raman study confirms the existence of chemical groups and the formation of two different crystals. The chemical compositions of the as-grown crystalline materials were established by Energy-dispersive X-ray spectroscopy. The UV–Vis study substantiates the transparency of LHHCL and LHMDHCL in the wavelength regions of 232–1000 nm and 230–1000 nm, respectively. Using the Tauc equation, the bandgap energy was determined as 5.35 eV and 5.38 eV for LHHCL and LHMDHCL crystals, respectively. In addition, the grown crystals have shown a better frequency conversion efficiency in comparison to KDP samples. According to the dielectric study, dielectric characteristics such as dielectric constant and dielectric loss for the LHHCL and LHMDHCL crystals drop as frequency increases. The hardness of the LHHCL and LHMDHCL crystals was measured by Vickers microhardness test which reveals that the grown crystals follow the normal indentation size effect.
ISSN:0957-4522
1573-482X
DOI:10.1007/s10854-021-07495-w