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Issue 5, 2016
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Phosphorescence quenching of fac-tris(2-phenylpyridyl)iridium(III) complexes in thin films on dielectric surfaces

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Abstract

We study the influence of the film thickness on the time-resolved phosphorescence and the luminescence quantum yield of fac-tris(2-phenylpyridyl)iridium(III) [Ir(ppy)3]-cored dendrimers deposited on dielectric substrates. A correlation is observed between the surface quenching velocity and the quenching rate by intermolecular interactions in the bulk film, which suggests that both processes are controlled by dipole–dipole interactions between Ir(ppy)3 complexes at the core of the dendrimers. It is also found that the surface quenching velocity decreases as the refractive index of the substrate is increased. This can be explained by partial screening of dipole–dipole interactions by the dielectric environment.

Graphical abstract: Phosphorescence quenching of fac-tris(2-phenylpyridyl)iridium(iii) complexes in thin films on dielectric surfaces

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Publication details

The article was received on 29 okt. 2015, accepted on 21 des. 2015 and first published on 21 des. 2015


Article type: Paper
DOI: 10.1039/C5CP06584D
Citation: Phys. Chem. Chem. Phys., 2016,18, 3575-3580
  • Open access: Creative Commons BY license
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    Phosphorescence quenching of fac-tris(2-phenylpyridyl)iridium(III) complexes in thin films on dielectric surfaces

    J. C. Ribierre, A. Ruseckas, S. V. Staton, K. Knights, N. Cumpstey, P. L. Burn and I. D. W. Samuel, Phys. Chem. Chem. Phys., 2016, 18, 3575
    DOI: 10.1039/C5CP06584D

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