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Title: Polymerization behavior of xanthate-containing monomers toward PPV precursor polymers: Study of the elimination behavior of precursor polymers and oligomers with in-situ FT-IR and UV-Vis analytical techniques
Authors: KESTERS, Els
LUTSEN, Laurence
Issue Date: 2002
Citation: MACROMOLECULES, 35(21). p. 7902-7910
Abstract: We have prepared two xanthate precursor polymers (6) and one sulfinyl precursor oligomer (7). In this way the polymerization behavior of three xanthate-containing monomers (3, 4, and 5) was studied. The chemical modifications on the monomer stage allowed to evaluate the outcome of the polymerization in relation to the chemical structure of the monomer. Polymerizations were performed in dry THF at different temperatures. The thermal conversion to the conjugated PPV structure, as well as its stability, was studied with different analytical techniques such as in-situ FT-IR spectroscopy, in-situ UV-vis spectroscopy, thermogravimetric analysis (TGA), and direct insert probe mass spectroscopy (DIP-MS). By combining the information obtained from these techniques, we were able to obtain a very detailed picture about the elimination process. These measurements also confirmed the formation of cis double bonds in xanthate precursor polymers on conversion. However, subsequent cis-trans isomerization in the end leads toward an all-trans-PPV polymer.
Notes: Univ Limburg, Div Chem, IMO, B-3590 Diepenbeek, Belgium. Univ Limburg, Div IMOMEC, IMEC, B-3590 Diepenbeek, Belgium.Vanderzande, D, Univ Limburg, Div Chem, IMO, B-3590 Diepenbeek, Belgium.
URI: http://hdl.handle.net/1942/2493
DOI: 10.1021/ma020694r
ISI #: 000178444400010
ISSN: 0024-9297
Category: A1
Type: Journal Contribution
Validation: ecoom, 2003
Appears in Collections: Research publications

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