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| - Photooxidation of Olefins Sensitized by Bisazafullerene (C59N)2and Hydroazafullerene C59HN: Product Analysis, Emission ofSinglet Oxygen, and Transient Absorption Spectroscopy
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| - The photooxidation reactions of olefins sensitized by the excited triplet states of bisazafullerene(C59N)2 and hydroazafullerene C59HN have been studied. Oxidation yields were compared withthose of pristine C60. The singlet oxygen yields are also determined directly from the emissionintensities, which are in good agreement with the oxidation yields. The triplet states of (C59N)2and C59HN have been identified by the time-resolved spectroscopic method by observing the triplet−triplet absorption spectra, which decay in the presence of oxygen. It has been proven that (C59N)2and C59HN have the ability to sensitize the reactions via singlet oxygen in about half of the efficiencyof that of pristine C60. For both azafullerenes, the triplet lifetimes are shorter than that of pristineC60, which may be related to the nitrogen atom embedded in the C60 moiety.
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