of an Adsorbed Pyrene
N,N-Dimethylaniline Exciplex
V. V. Dudnik, V. P. Kondilenko, and I. G. Tarasov
Institute of Surface Chemistry, National Academy of Sciences of Ukraine, Kiev, Ukraine
Received April 5, 1996
Abstract—The position of the first excited singlet state of an adsorbed pyrene–N,N-dimethylaniline exciplex
was found to depend on the temperature of thermal pretreatment of the surface of nonporous silica. This depen-
dence manifests itself by changes in the position of a fluorescence maximum in the spectrum of the exciplex
and is determined by dipole–dipole interaction of the complex with hydroxyl groups and water molecules on
the surface.
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