dc.creator Metzger, J. Y. L. en_US dc.creator Meyer, Beat en_US dc.date.accessioned 2006-06-15T13:18:44Z dc.date.available 2006-06-15T13:18:44Z dc.date.issued 1970 en_US dc.identifier 1970-F-1 en_US dc.identifier.uri http://hdl.handle.net/1811/8408 dc.description This research was supported by the National Science Foundation. en_US dc.description Author Institution: Chemistry Department, University of Washington en_US dc.description.abstract At low temperatures in weakly interacting solids, many molecules exhibit solvent induced phosphorescence. The intensity of phosphorescence and the ratio of fluorescence to phosphorescence, as well as the ratio of radiative to radiationless decay, change with temperature. This effect is observed even at low temperatures where delayed thermal fluorescence does not occur. We will discuss cases where the temperature dependence is due to intramolecular energy transfer due to changes in intersystem crossing $S_{1}$ to $T_{1}$ and $T_{1}$ to $S_{a}$. We have measured the temperature dependence of fluorescence yield, phosphorescence yield and phosphorescence lifetime of $SO_{2}$, thiazole, naphthalene, naphthalene-$d_{8}$ and phenanthrene in solid rare gases, solid $SF_{4}$ and solid samples of hydrocarbons, perdeutero carbons and perfluoro carbons in the temperature range of $4^\circ K$ to 0.7 of the solvent melting point. en_US dc.format.extent 95176 bytes dc.format.mimetype image/jpeg dc.language.iso English en_US dc.publisher Ohio State University en_US dc.title TEMPERATURE DEPENDENCE OF PHOSPHORESCENCE INTENSITY AND LIFETIME en_US dc.type article en_US
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