Magnetic modulation of the luminescence of pyrene-N,N-dimethylaniline exciplexes in solutions of reverse micelles

An external magnetic field was found to enhance the luminescence of pyrene-N,N-dimethylaniline exciplexes in a solution of reverse micelles containing water, OT Aerosol, and pentanol (0.6%, B=30 mT). The field dependence of the relative change in the intensity of the exciplex fluorescence does not reach saturation for fields with magnetic induction up to 30 mT, which is not observed in polar homogeneous solutions. These results may be attributed to the circumstance that a significant fraction of pyrene (up to 30%) is localized in the interphase of the reverse micelles.Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 8, pp. 1918–1920, August, 1990.