Photophysics of pyrene adsorbed on aerosil

The spectral luminescence properties of pyrene adsorbed on the surface of aerosil have been investigated at different thermal activation temperatures (453, 773, and 1073°K) and different degrees of surface coverage (0.01–10% of monolayer). The differences from the properties of pyrene adsorbed on silica gel are dictated by the high polarity of the aerosil surface, the less significant rearrangement of its hydroxyl coverage in thermal treatment, and its pronounced energetic discrete homogeneity at low degrees of coverage.Translated from Teoreticheskaya i Éksperimental'naya Khimiya, Vol. 23, No. 1, pp. 121–125, January–February, 1987.