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The Effect of Persistent TEMPO Radicals on the Gilch Polymerization

Wiesecke, Jens and Rehahn, Matthias (2007):
The Effect of Persistent TEMPO Radicals on the Gilch Polymerization.
In: Macromolecular Rapid Communications, pp. 78-83, 28, (1), ISSN 10221336, [Online-Edition: http://dx.doi.org/10.1002/marc.200600655],
[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
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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