Abstract
The magnetic field effect on the intramolecular exciplex luminescence of a polymer-chain-linked pyrene—dimethylaniline system has been studied using both stead-state and time-resolved techniques. The dependence of the exciplex luminescence (ø) and the relative change in the luminescence in the presence of a magnetic field (Δø/ø) on the wavelength λ and dielectric constant (ϵ) of the medium has been investigated. Although the rise and decay times of this system are quite long compared to the unlinked pyrene—dimethylaniline system, that the ϵ max value, at which Δø/ø reaches its maximum, and the β 1 2 value are nearly the same as these obtained in the unlinked system. The decay curves of the linked system in the absence and in the presence of a field have been rationalized.
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