Variation in the fluorescence decay properties of haematoporphyrin derivative during its conversion to photoproducts |
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| Authors: | K K?nig H Wabnitz W Dietel |
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| Institution: | Department of Physics, Friedrich Schiller University Jena, F.R.G. |
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| Abstract: | Haematoporphyrin derivative (HpD) photoproducts are formed in aqueous solutions during light exposure in the presence of oxygen. The evaluation of the fluorescence decay of the photoproduct-enriched HpD solution shows an increase in the short-lived components, especially about 2 ns, in comparison with HpD without photoproducts. The bleaching of the HpD fluorescence and the photoproduct formation by the fluorescence-exciting radiation has to be taken into account in the evaluation of stationary as well as time-resolved fluorescence measurements. |
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