Magnetic field dependence of delayed fluorescence of pyrene in solution |
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Authors: | Hans van Willigen |
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Affiliation: | University of Massachusetts/Boston, Boston, Massachusetts 02125, USA |
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Abstract: | The magnetic field effect on the intensities of monomer (IM) and excimer (ID) delayed fluorescence of pyrene has been found to be identical. This result suggests a common spin-selective step in the processes giving rise to IM and ID, and is discussed in the light of previously proposed mechanisms. An unusual solvent effect is found on the IM (ID) versus field strength curves. This is attributed to photochemical doublet-radical formation. Doublet-radical formation affects the field dependence of IM and ID through spin selectivity in the triplet quenching reaction. |
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