Solvent Effect in Glycyrrhizic Acid Spectra (Absorption and Fluorescence)

In this research paper, a method built on UV/VIS spectrofluorophotometer and spectrophotometer by finding the fluorescence of glycyrrhizic acid in licorice root. Glycyrrhizic acid is an imperative active component present in licorice (Glycyrrhiza uralensis Fisch). Solvent effect had been studied in different solvents like deionized water and methanol. The differences between them were explored by the glycyrrhizic acid absorption and emission spectra. Under work conditions, i.e. 100% methanol solvent, a liquid ratio concentration 10−2 to 10−5 g /mL and second solvent with same conditions 100% deionized water in the same concentrations ,was done. The effect of the solvent was significant by change the value for λmax. The result was validated for parameters confines for Ex (λ Excitation) in different solvents. The results of absorption spectra obey Beer-Lambert's law. Because of the same property of these solvents (protic), the absence of a significant difference in the absorption spectra are shown. From florescence spectra, the spectrum at concentration 10−4 is the best for both solvents..

X-ray absorption spectra of f-element complexes: insight from relativistic multiconfigurational wavefunction theory

The calculation of X-ray absorption structures with relativistic multiconfiguration ab-initio wavefunction approaches helps elucidating metal-ligand bonding in lanthanide and actinide complexes.

Vibrationally Resolved Absorption Spectra and Ultrafast Exciton Dynamics in the α-Phase and β-Phase Zinc Phthalocyanine Aggregates

The vibrationally resolved absorption spectra and ultrafast exciton dynamics in the α-phase and β-phase zinc phthalocyanine (ZnPc) aggregates are theoretically investigated by using a non-Markovian stochastic Schrödinger equation combined with...