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Preparation and characterization of crystalline materials - salts of N-guanylglycinium and guanidinium
 Skopalík, Jiří ; Matulková, Irena (advisor) ; Zákutná, Dominika (referee)
The scope of this bachelor thesis is the preparation and study of new salts, which can be obtained from systems N-guanylglycine - inorganic acid and guanidine - amidosulfuric acid, as new materials with potential for applications in nonlinear optics. Prepared crystalline salts of N-guanylglycinium - i.e. chloride, two hydrogenphosphites and sulfate dihydrate along with guanidinium amidosulfate were characterized by methods of vibrational spectroscopy (infrared and Raman) and X-ray diffraction (single crystal and powder methods). To estimate the nonlinear optical properties and for the interpretation of the vibrational manifestations of N-guanylglycinium cation, quantum-chemical calculations were performed. Finally, for two non-centrosymmetric N-guanylglycinium hydrogenphosphites, the efficiency of second harmonic generation was determined for powder samples.
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