Photo physical properties of Caffeine and cu (ii)-caffeine Complex

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dc.contributor.advisorAsfaw Araya (PhD)
dc.contributor.authorG/medhin Tesfay
dc.date.accessioned2018-07-05T07:19:11Z
dc.date.accessioned2023-11-09T11:24:44Z
dc.date.available2018-07-05T07:19:11Z
dc.date.available2023-11-09T11:24:44Z
dc.date.issued2007-09
dc.description.abstractIn this thesis UV/Vis absorption spectra of caffeine in water and dichloromethane, copper sulphate, and mixture of caffeine and copper sulphate in water solution is investigated. UV/Vis absorption spectrum of Cu (II)-Caffeine complex is also investigated as a function of time during refluxing to check complex formation. The molar decadic absorption coefficient of caffeine is calculated. Fluorescence emission spectra of Cu (II)- Caffeine complex is also investigated and compared with its absorption band. Area normalization analysis method is used. Finally, a better derivative fluorescence method for determination of caffeine content of substances is recommended Key words: Absorbance, Molar decadic absorption coefficient, Reflux, Complex formation, Derivative Fluorescence, Is-emission point, Area normalizationen_US
dc.identifier.urihttp://10.90.10.223:4000/handle/123456789/6567
dc.language.isoenen_US
dc.publisherAddis Ababa Universityen_US
dc.subjectAbsorbanceen_US
dc.subjectMolar Decadic Absorption Coefficienten_US
dc.subjectRefluxen_US
dc.subjectComplex Formationen_US
dc.subjectDerivative Fluorescenceen_US
dc.subjectIs-Emission Pointen_US
dc.subjectArea Normalizationen_US
dc.titlePhoto physical properties of Caffeine and cu (ii)-caffeine Complexen_US
dc.typeThesisen_US

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