Norbornene-based copolymers with iridium complexes and bis(carbazolyl) fluorene groups in their side-chains and their use in light-emitting diodes

Alpay Kimyonok, Benoit Domercq, Andreas Haldi, Jian Yang Cho, Joseph R. Carlise, Xian Yong Wang, Lauren E. Hayden, Simon C. Jones, Stephen Barlow, Seth R. Marder, Bernard Kippelen, Marcus Weck

Research output: Contribution to journalArticle

Abstract

Solution-processable copolymers with pendant phosphorescent iridium complexes and 2,7-di(carbazol-9-yl)fluorene-type host moieties were synthesized using ruthenium-catalyzed ring-opening metathesis polymerization. Low polydispersity indices and molecular weights around 20 000 Da were obtained for all copolymers. As a result of the living character of the polymerization of the monomer containing the host moiety, a high degree of control over the molecular weights of all copolymers can be obtained. The photo- and electroluminescence properties of the copolymers were investigated. All copolymers retained the photo- and electrophysical properties of the corresponding nonpolymeric iridium complexes. Furthermore, as a proof of principle for the potential use of these materials, organic light-emitting devices were fabricated using the orange-emitting copolymer. A maximum external quantum efficiency of 1.9% at 100 cd/m 2 and a turn-on voltage of 3.7 V were obtained with photoluminescence quantum yield of 0.10 demonstrating the potential of these copolymers as emissive materials for display and lighting applications.

Original languageEnglish (US)
Pages (from-to)5602-5608
Number of pages7
JournalChemistry of Materials
Volume19
Issue number23
DOIs
StatePublished - Nov 13 2007

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Iridium
Light emitting diodes
Copolymers
Photoluminescence
Molecular weight
Ruthenium
Ring opening polymerization
Electroluminescence
Polydispersity
Quantum yield
2-norbornene
fluorene
Quantum efficiency
Monomers
Lighting
Display devices
Polymerization
Electric potential

ASJC Scopus subject areas

  • Materials Chemistry
  • Materials Science(all)

Cite this

Norbornene-based copolymers with iridium complexes and bis(carbazolyl) fluorene groups in their side-chains and their use in light-emitting diodes. / Kimyonok, Alpay; Domercq, Benoit; Haldi, Andreas; Cho, Jian Yang; Carlise, Joseph R.; Wang, Xian Yong; Hayden, Lauren E.; Jones, Simon C.; Barlow, Stephen; Marder, Seth R.; Kippelen, Bernard; Weck, Marcus.

In: Chemistry of Materials, Vol. 19, No. 23, 13.11.2007, p. 5602-5608.

Research output: Contribution to journalArticle

Kimyonok, A, Domercq, B, Haldi, A, Cho, JY, Carlise, JR, Wang, XY, Hayden, LE, Jones, SC, Barlow, S, Marder, SR, Kippelen, B & Weck, M 2007, 'Norbornene-based copolymers with iridium complexes and bis(carbazolyl) fluorene groups in their side-chains and their use in light-emitting diodes', Chemistry of Materials, vol. 19, no. 23, pp. 5602-5608. https://doi.org/10.1021/cm0717357
Kimyonok, Alpay ; Domercq, Benoit ; Haldi, Andreas ; Cho, Jian Yang ; Carlise, Joseph R. ; Wang, Xian Yong ; Hayden, Lauren E. ; Jones, Simon C. ; Barlow, Stephen ; Marder, Seth R. ; Kippelen, Bernard ; Weck, Marcus. / Norbornene-based copolymers with iridium complexes and bis(carbazolyl) fluorene groups in their side-chains and their use in light-emitting diodes. In: Chemistry of Materials. 2007 ; Vol. 19, No. 23. pp. 5602-5608.
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