Wiesecke, Jens ; Rehahn, Matthias (2007)
The Effect of Persistent TEMPO Radicals on the Gilch Polymerization.
In: Macromolecular Rapid Communications, 28 (1)
doi: 10.1002/marc.200600655
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
The mechanism of the Gilch polymerization leading to poly(p-phenylene vinylenes) is still a matter of controversial discussion. Similar to some other research groups, we strongly favor a basically radical process. Moreover, we believe it is initiated by spontaneously formed diradicals. Here, we describe further experimental evidence which clearly supports the assumed initiation step: it is shown how the polymerization process is affected quantitatively when different amounts of 2,2,6,6-tetramethylpiperidine-N-oxyl (TEMPO) are added as a scavenger. In full agreement with our expectations, the chain growth is either retarded or completely prevented, depending on the respective molar ratio of monomer and scavenger.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2007 |
| Autor(en): | Wiesecke, Jens ; Rehahn, Matthias |
| Art des Eintrags: | Bibliographie |
| Titel: | The Effect of Persistent TEMPO Radicals on the Gilch Polymerization |
| Sprache: | Englisch |
| Publikationsjahr: | Januar 2007 |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Macromolecular Rapid Communications |
| Jahrgang/Volume einer Zeitschrift: | 28 |
| (Heft-)Nummer: | 1 |
| DOI: | 10.1002/marc.200600655 |
| Kurzbeschreibung (Abstract): | The mechanism of the Gilch polymerization leading to poly(p-phenylene vinylenes) is still a matter of controversial discussion. Similar to some other research groups, we strongly favor a basically radical process. Moreover, we believe it is initiated by spontaneously formed diradicals. Here, we describe further experimental evidence which clearly supports the assumed initiation step: it is shown how the polymerization process is affected quantitatively when different amounts of 2,2,6,6-tetramethylpiperidine-N-oxyl (TEMPO) are added as a scavenger. In full agreement with our expectations, the chain growth is either retarded or completely prevented, depending on the respective molar ratio of monomer and scavenger. |
| Freie Schlagworte: | conducting polymers; Gilch reaction; light-emitting diodes (LED); poly(p-phenylene vinylenes) (PPV); reaction mechanism |
| 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 15:04 |
| Letzte Änderung: | 05 Mär 2013 09:51 |
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