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Tautomersim and Spectral Properties of Alizarin (1,2-Dihydroxyanthracene-9, 10-Dione)

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dc.contributor.advisor Redi, Mesfin
dc.contributor.author Kebede, Tesfaye
dc.date.accessioned 2018-06-26T06:36:30Z
dc.date.available 2018-06-26T06:36:30Z
dc.date.issued 2007-07
dc.identifier.uri http://etd.aau.edu.et/handle/123456789/3445
dc.description.abstract This paper mainly tends to explain the dual fluorescence of alizarin and its structures that are responsible for the existence of fluorescence emission spectra different from absorption spectra. And uses structural isomerism (Tautomersim) to explain the dual fluorescence shown by this compound. As well the affect of the PH of the media, polarity of the solvent and hydrogen bond forming tendency of solvents on both absorption and fluorescence emission spectra of alizarin were studied. Four alizarin tautomers were selected for simplicity that may exist in both ground and excited state or only in one of the two states. The structure of this compound is investigated both experimentally and theoretically. Experimentally its absorption, fluorescence emission spectra and 1H NMR were done and computational techniques (HF, DFT and semiemperical) were used to calculate total energy, Gibbs free energy, dipole moment, excitation energy and other molecular parameters. Key words: Alizarin, fluorescence, tautomers, computational, absorption, protic, aprotic and 1H NMR en_US
dc.language.iso en en_US
dc.publisher Addis Ababa Universty en_US
dc.subject Alizarin en_US
dc.subject Fluorescence en_US
dc.subject Tautomers en_US
dc.subject Computational en_US
dc.subject Absorption en_US
dc.subject Protic en_US
dc.subject aprotic and 1H NMR. en_US
dc.title Tautomersim and Spectral Properties of Alizarin (1,2-Dihydroxyanthracene-9, 10-Dione) en_US
dc.type Thesis en_US

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