A DEPENDENCE OF TRIPLET LIFETIMES ON EXCITATION WAVELENGTH
Creators:Johnson, Philip M.
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Publisher:Ohio State University
The absorption lines of molecules contained in solid organic glasses and in rare gas crystals are inhomogeneously broadened due to the multiplicity of solvent environments. It is also known that the local environment effects the triplet lifetime of some molecules, notably benzene, as shown by different lifetimes in various solvents. Using narrow band monochromatic excitation, triplet lifetimes have been measured with the excitation at various positions across the absorption line. It is found that the lifetime can vary as much as $10\%$ in 3-methylpentane (3MP) and more than $50\%$ in argon crystal. Results for benzene in 3MP and argon and naphthalene in 3MP will be reported.
Author Institution: Department of Chemistry, State University of New York
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