Sensitized room temperature phosphorescence of pyrene in sodium dodecylsulfate micelles with triphaflavine as energy donor

The sensitized room temperature phosphorescence (SRTP) of pyrene in micellar solutions of sodium dodecylsulfate (SDS) based on triplet-triplet (T-T) energy transfer has been investigated. Triphaflavine as a triplet energy donor, thallium(I) nitrate as a heavy atom, and sodium sulfite as a scavenger of oxygen were used. The effects of triphaflavine, SDS, and thallium nitrate concentrations on pyrene-SRTP intensity, lifetime, and decay rate constants were studied. A comparative study of selectivity factors for pyrene determination by room temperature phosphorescence (RTP) and SRTP has also been made. The analytical figures of merit for SRTP determination of pyrene are given.