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Iridium(III) Complexes with PEO and PS Polymer Macroligands and Light-Emitting Properties: Synthesis and Characterization

  1. Elisabeth Holder,
  2. Veronica Marin,
  3. Dmitry Kozodaev,
  4. Michael A. R. Meier,
  5. Bas G. G. Lohmeijer,
  6. Ulrich S. Schubert*

Article first published online: 17 MAY 2005

DOI: 10.1002/macp.200400544

Issue

Macromolecular Chemistry and Physics

Macromolecular Chemistry and Physics

Volume 206, Issue 10, pages 989–997, May 19, 2005

Additional Information

How to Cite

Holder, E., Marin, V., Kozodaev, D., Meier, M. A. R., Lohmeijer, B. G. G. and Schubert, U. S. (2005), Iridium(III) Complexes with PEO and PS Polymer Macroligands and Light-Emitting Properties: Synthesis and Characterization. Macromolecular Chemistry and Physics, 206: 989–997. doi: 10.1002/macp.200400544

Author Information

  1. Laboratory of Macromolecular Chemistry and Nanoscience, Eindhoven University of Technology and Dutch Polymer Institute (DPI), P.O. Box 513, 5600 MB Eindhoven, The Netherlands

*Laboratory of Macromolecular Chemistry and Nanoscience, Eindhoven University of Technology and Dutch Polymer Institute (DPI), P.O. Box 513, 5600 MB Eindhoven, The Netherlands. Fax: (+31) (0)40 2474186

Publication History

  1. Issue published online: 17 MAY 2005
  2. Article first published online: 17 MAY 2005
  3. Manuscript Accepted: 8 MAR 2005
  4. Manuscript Revised: 5 MAR 2005
  5. Manuscript Received: 21 DEC 2004

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Keywords:

  • atomic force microscopy (AFM);
  • light-emitting iridium(III) complexes;
  • poly(ethylene oxide);
  • poly(styrene);
  • 2D NMR

Abstract

Summary: On the basis of terpyridine functionalized poly(ethylene oxide) (PEO) and poly(styrene) (PS), a series of light-emitting iridium(III) compounds was effectively synthesized. The respective iridium(III) target compounds were prepared by grafting chloro-bridged precursor complexes [Ir(ppy)2-μ-Cl]2 (ppy = phenylpyridine) and [Ir(ppy-CHO)2-μ-Cl]2 (ppy-CHO = 4-(2-pyridyl)benzaldehyde) onto terpyridine functionalized PEO and PS tails. 1D and 2D NMR characterization was performed revealing the expected resonances. Gel permeation chromatography (GPC) proved the stability and purity of the targeted materials. Preliminary investigations of the light-emitting properties were carried out by standard methods such as UV-vis and steady-state luminescence spectroscopy. The morphology and the quality of films of these iridium(III) compounds were furthermore investigated using AFM. Improved stability on the electrode surface was illustrated using cyclic voltammetry. One of the polymer materials was compared to the neat complex, which showed quick degradation.

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