Copolymers Containing Phosphorescent Iridium(III) Complexes Obtained by Free and Controlled Radical Polymerization Techniques
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Ulbricht, Christoph; Becer, C. Remzi; Winter, Andreas; Veldman, Dirk; Schubert, Ulrich S.
- Abstract:
- Amethacrylate-functionalized phosphorescent Ir(III)-complex has been synthesized, characterized,
and applied as a monomer in radical copolymerizations. Together with methyl methacrylate,
the complex has been copolymerized under free radical polymerization conditions. Aiming
forhost-guest-systems,applicablee.g.inorganiclightemittingdevices(OLEDs),thecomplexwas
further copolymerized with a methacrylate-functionalized carbazole derivative using the atom
transfer radical polymerization technique. Applying gel permeation chromatography, in combination
with a photodiode array detector, could clearly prove the formation of the copolymers.
The optical properties of the photoactive
monomers as well as the copolymers were
investigated by absorption and emission
spectroscopy (in solution). For the carbazolecopolymer,
the emission originates almost
exclusively from the complex. This provides
evidence of an efficient intrachain energy
transfer, which makes the system an interesting
candidate for potential OLED applications.
- Year:
- 2008
- Type of Publication:
- Article
- Journal:
- Macromolecular Rapid Communications
- Volume:
- 29
- Pages:
- 1919 - 1925