Wiesecke, Jens and Rehahn, Matthias (2007):
The Effect of Persistent TEMPO Radicals on the Gilch Polymerization.
In: Macromolecular Rapid Communications, 28 (1), pp. 78-83. ISSN 10221336,
[Article]
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.
| Item Type: | Article |
|---|---|
| Erschienen: | 2007 |
| Creators: | Wiesecke, Jens and Rehahn, Matthias |
| Title: | The Effect of Persistent TEMPO Radicals on the Gilch Polymerization |
| Language: | English |
| 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. |
| Journal or Publication Title: | Macromolecular Rapid Communications |
| Journal volume: | 28 |
| Number: | 1 |
| Uncontrolled Keywords: | conducting polymers; Gilch reaction; light-emitting diodes (LED); poly(p-phenylene vinylenes) (PPV); reaction mechanism |
| Divisions: | DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 595: Electrical fatigue > A - Synthesis > Subproject A5: Synthesis of semiconducting model polymers and their characterization before and after cyclic electrical fatigue DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 595: Electrical fatigue > A - Synthesis DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 595: Electrical fatigue Zentrale Einrichtungen DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres DFG-Collaborative Research Centres (incl. Transregio) |
| Date Deposited: | 04 Aug 2011 15:04 |
| Official URL: | http://dx.doi.org/10.1002/marc.200600655 |
| Additional Information: | SFB 595 A5 |
| Identification Number: | doi:10.1002/marc.200600655 |
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