Energy Transfer in Micellar Systems. Fluorescence Investigation of Energy Transfer from Dialkylalloxazine to Dye Cations in the Presence of Anionic Micelles

The energy transfer from photoexcited 1,3‐dioctylalloxazine (DOA) to dye cations (proflavine, PF+, and acriflavine, AF+) has been investigated in aqueous solutions containing anionic sodium dodecyl sulfate, SDS, micelles. The energy transfer efficiency smoothly varies with the concentration of SDS above the critical micelle concentration of SDS. The experimental data can be interpreted in terms of the probability of binding both donor and acceptor molecules in the same micelle. The singlet energy of the excited donor at the micelle interior appears to be efficiently delivered to the acceptor cation at the micellar surface by the Förster‐type induced resonance mechanism.