Abstract
We investigated phosphorescence of conjugated poly-para-phenylene polymers sensitized by a dimethylamino derivative of benzyl (DMAB) and a methyl derivative of tri(2-phenylpyridyl)iridium(III) [Ir(meppy)3]. We found that adding both compounds to the polymer quenches the fluorescence of the polymer and increases its phosphorescence. Although the effectiveness of fluorescence quenching of the polymer is the same, a higher intensity and decay rate of phosphorescence quenching are observed for the polymer activated by the organometallic complex. The results are interpreted in the framework of the model of a remote resonance-enhanced effect of an external heavy atom.
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