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http://hdl.handle.net/1942/12362
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DC Field | Value | Language |
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dc.contributor.author | COSEMANS, Inge | - |
dc.contributor.author | HONTIS, Lieve | - |
dc.contributor.author | VAN DEN BERGHE, David | - |
dc.contributor.author | PALMAERTS, Arne | - |
dc.contributor.author | WOUTERS, Jimmy | - |
dc.contributor.author | CLEIJ, Thomas | - |
dc.contributor.author | LUTSEN, Laurence | - |
dc.contributor.author | MAES, Wouter | - |
dc.contributor.author | JUNKERS, Tanja | - |
dc.contributor.author | VANDERZANDE, Dirk | - |
dc.date.accessioned | 2011-11-15T11:43:52Z | - |
dc.date.available | NO_RESTRICTION | - |
dc.date.available | 2011-11-15T11:43:52Z | - |
dc.date.issued | 2011 | - |
dc.identifier.citation | MACROMOLECULES, 44(19). p. 7610-7616 | - |
dc.identifier.issn | 0024-9297 | - |
dc.identifier.uri | http://hdl.handle.net/1942/12362 | - |
dc.description.abstract | The polymerization of PPV via the sulfinyl precursor route has been investigated with respect to its mechanism. When polymerized in sec-butanol, a purely radical polymerization mechanism is observed as in most precursor polymerization routes. Accordingly, an increase in the reaction temperature induced an increase in the overall yield alongside with a reduction of the average molecular weight of the polymer. Upon changing the monomer concentration in solution before addition of the base NatBuO, an increase in molecular weight is observed, signifying that the polymerization is faster than the mixing of the two reaction components. When changing the solvent to NMP, a competition of anionic and radical polymerization has been established while in THF an anionic polymerization mechanism occurs exclusively. To prevent termination reactions, LDA and LHMDS were introduced as base whereby LHMDS shows less propensity to initiate anionic chain growth due to higher steric hindrance. With polymerizations in presence of the radical quencher TEMPO, the anionic polymerization mechanism could unambiguously be proven. | - |
dc.description.sponsorship | The authors gratefully acknowledge the IWT (Institute for the Promotion of Innovation by Science and Technology in Flanders) for the financial support via the SBO-project 060843 "PolySpec". We also thank BELSPO in the frame of the IAP P6/27 network and the FWO (Fund for Scientific Research-Flanders) via the project G.0091.07N for the financial support and for the PhD grant for A.P. The BOF (Bijzonder OnderzoeksFonds) of the UHasselt is acknowledged for the PhD grants for J.W., D.V.D.B., and I.C. | - |
dc.language.iso | en | - |
dc.publisher | AMER CHEMICAL SOC | - |
dc.title | Discovery of an Anionic Polymerization Mechanism for High Molecular Weight PPV Derivatives via the Sulfinyl Precursor Route | - |
dc.type | Journal Contribution | - |
dc.identifier.epage | 7616 | - |
dc.identifier.issue | 19 | - |
dc.identifier.spage | 7610 | - |
dc.identifier.volume | 44 | - |
local.format.pages | 7 | - |
local.bibliographicCitation.jcat | A1 | - |
dc.description.notes | Vanderzande, DJM (reprint author),[Cosemans, I; Hontis, L; Van Den Berghe, D; Palmaerts, A; Wouters, J; Cleij, TJ; Maes, W; Junkers, T; Vanderzande, DJM] Hasselt Univ, Inst Mat Res IMO, B-3590 Diepenbeek, Belgium. [Lutsen, L; Vanderzande, DJM] IMEC, Div IMOMEC, B-3590 Diepenbeek, Belgium. dirk.vanderzande@uhasselt.be | - |
local.type.refereed | Refereed | - |
local.type.specified | Article | - |
dc.bibliographicCitation.oldjcat | A1 | - |
dc.identifier.doi | 10.1021/ma201453s | - |
dc.identifier.isi | 000295487600014 | - |
item.fulltext | No Fulltext | - |
item.accessRights | Closed Access | - |
item.contributor | COSEMANS, Inge | - |
item.contributor | HONTIS, Lieve | - |
item.contributor | VAN DEN BERGHE, David | - |
item.contributor | PALMAERTS, Arne | - |
item.contributor | WOUTERS, Jimmy | - |
item.contributor | CLEIJ, Thomas | - |
item.contributor | LUTSEN, Laurence | - |
item.contributor | MAES, Wouter | - |
item.contributor | JUNKERS, Tanja | - |
item.contributor | VANDERZANDE, Dirk | - |
item.fullcitation | COSEMANS, Inge; HONTIS, Lieve; VAN DEN BERGHE, David; PALMAERTS, Arne; WOUTERS, Jimmy; CLEIJ, Thomas; LUTSEN, Laurence; MAES, Wouter; JUNKERS, Tanja & VANDERZANDE, Dirk (2011) Discovery of an Anionic Polymerization Mechanism for High Molecular Weight PPV Derivatives via the Sulfinyl Precursor Route. In: MACROMOLECULES, 44(19). p. 7610-7616. | - |
item.validation | ecoom 2012 | - |
crisitem.journal.issn | 0024-9297 | - |
crisitem.journal.eissn | 1520-5835 | - |
Appears in Collections: | Research publications |
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