A Novel Light-Emitting Mixed-Ligand Iridium(III) Complex with a Terpyridine-Poly(ethylene glycol) Macroligand

Authors

  • Elisabeth Holder,

    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
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  • Veronica Marin,

    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
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  • Michael A. R. Meier,

    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
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  • Ulrich S. Schubert

    Corresponding author
    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
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Abstract

Summary: A monoterpyridine-poly(ethylene glycol) (mono-tpy-PEG) and a novel monoterpyridine-PEG-functionalized iridium(III) complex were successfully synthesized and fully characterized by means of NMR, IR, and UV-vis spectroscopy, as well as gel permeation chromatography and matrix-assisted laser desorption/ionization time-of-flight mass spectrometry. The functionalized monoterpyridine iridium(III) complex was synthesized by a bridge-splitting reaction of a dimeric iridium(III) precursor complex using a chelating terpyridine ligand with a poly(ethylene glycol) tail. With this approach, a new class of light-emitting polymeric materials revealing interesting optical properties was made avaialable.

original image

Upon excitation of a spin-coated film of the iridium(III) complex prepared here, a yellow emission color (two bands in figure) was observed.

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