Phofluorescence lifetime measurement by single photon counting

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dc.contributor.authorAweda, Moses Adebayo
dc.date.accessioned2019-10-21T15:57:42Z
dc.date.available2019-10-21T15:57:42Z
dc.date.issued1985
dc.description134pgen_US
dc.description.abstractA fluorescence lifetime measuring instrument in the nanosecond time range has been assembled using components from the ORTEC, EMI, TEKTRONIX, BRANDENBURG AND CAMBERRA. The fluorescence emmission spectra of two aromatic hydro-carbons (naphthalene and pyrene) wore measured for identification and proper classification. The lifetime measuring instrument was calibrated and tested with 1μg/ml solution of quinine sulphate in. 0.05M sulphuric acid. A value of 21.50 ns was obtained for the fluorescence lifetime of quinine sulphate. The fluorescence lifetimes of naphthalene and pyrene were then determined with this system using four different concentration of each sample. A vacuum system was also constructed for removing the dissolved oxygen in these aromatic hydrocarbons. After degassing the measurement was repeated for each sample. The monomer fluorescence lifetime of 437.50 ns was obtained for naphthalene while 577.02 ns was obtained for pyrene.en_US
dc.identifier.urihttps://ir.oauife.edu.ng/handle/123456789/5005
dc.language.isoenen_US
dc.publisherObafemi Awolowo University, Ile Ife, Nigeriaen_US
dc.subjectHydrocarbonen_US
dc.subjectNaphthaleneen_US
dc.subjectOxygenen_US
dc.subjectMonomer fluorescenceen_US
dc.subjectNanoseconden_US
dc.subjectCalibrationen_US
dc.subjectPyreneen_US
dc.titlePhofluorescence lifetime measurement by single photon countingen_US
dc.typeThesisen_US
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