Langecker, Jens ; Rehahn, Matthias (2008)
Iridium-Functionalized Polyfluorenes: Advantages and Limitations of the Suzuki and Yamamoto Approaches.
In: Macromolecular Chemistry and Physics, 209 (3)
doi: 10.1002/macp.200700299
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
Four synthetic pathways leading toward iridium-functionalized polyfluorenes are compared: the metallopolymers have been synthesized via Suzuki and Yamamoto polycondensation reactions, and precursor routes as well as direct routes have been tested for both coupling protocols. The direct Yamamoto synthesis – using an appropriately functionalized iridium-complex as comonomer – is shown to be the most efficient method. The three competing routes produce the desired polymers too, but the materials are either lower in molar mass or less regular in molecular constitution. Exploratory analysis of the optical properties shows that the polyfluorene moieties dominate absorption and photoluminescence behavior in dilute solution, while luminescence originates mainly from the iridium complexes when solid-state samples are investigated.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2008 |
| Autor(en): | Langecker, Jens ; Rehahn, Matthias |
| Art des Eintrags: | Bibliographie |
| Titel: | Iridium-Functionalized Polyfluorenes: Advantages and Limitations of the Suzuki and Yamamoto Approaches |
| Sprache: | Englisch |
| Publikationsjahr: | Februar 2008 |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Macromolecular Chemistry and Physics |
| Jahrgang/Volume einer Zeitschrift: | 209 |
| (Heft-)Nummer: | 3 |
| DOI: | 10.1002/macp.200700299 |
| Kurzbeschreibung (Abstract): | Four synthetic pathways leading toward iridium-functionalized polyfluorenes are compared: the metallopolymers have been synthesized via Suzuki and Yamamoto polycondensation reactions, and precursor routes as well as direct routes have been tested for both coupling protocols. The direct Yamamoto synthesis – using an appropriately functionalized iridium-complex as comonomer – is shown to be the most efficient method. The three competing routes produce the desired polymers too, but the materials are either lower in molar mass or less regular in molecular constitution. Exploratory analysis of the optical properties shows that the polyfluorene moieties dominate absorption and photoluminescence behavior in dilute solution, while luminescence originates mainly from the iridium complexes when solid-state samples are investigated. |
| Freie Schlagworte: | conjugated polymers; iridium complexes; iridium-containing polymers; light-emitting diodes; metal–polymer complexes; polyfluorenes; Suzuki coupling; triplet emitters; Yamamoto coupling |
| Zusätzliche Informationen: | SFB 595 A5 |
| Fachbereich(e)/-gebiet(e): | DFG-Sonderforschungsbereiche (inkl. Transregio) > Sonderforschungsbereiche > SFB 595: Elektrische Ermüdung > A - Synthese > Teilprojekt A5: Synthese halbleitender Modellpolymere und deren Charakterisierung vor und nach zyklischer elektrischer Ermüdung DFG-Sonderforschungsbereiche (inkl. Transregio) > Sonderforschungsbereiche > SFB 595: Elektrische Ermüdung > A - Synthese DFG-Sonderforschungsbereiche (inkl. Transregio) > Sonderforschungsbereiche > SFB 595: Elektrische Ermüdung Zentrale Einrichtungen DFG-Sonderforschungsbereiche (inkl. Transregio) > Sonderforschungsbereiche DFG-Sonderforschungsbereiche (inkl. Transregio) |
| Hinterlegungsdatum: | 04 Aug 2011 14:52 |
| Letzte Änderung: | 05 Mär 2013 09:51 |
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