Title: Influence of the polymerization methodology on the regioregularity and chiroptical properties of poly(alkylthiothiophene)s
Authors: Vandeleene, Steven ×
Van Den Bergh, Karlien
Verbiest, Thierry
Koeckelberghs, Guy #
Issue Date: Jul-2008
Publisher: Amer chemical soc
Series Title: Macromolecules vol:41 issue:14 pages:5123-5131
Abstract: Two chiral poly (3-alkylthiothiophene)s (P3ATTs) were prepared by polymerization of 2-bromo4-((S)-3,7-dimethyloctylthio)thiophene using a "modified McCullough method" (P1) and 2,5-dibromo-3-((S)-3,7-dimethyloctylthio)thiophene by the GRIM method (P2). PI was regioregular, while P2 was regio-irregular, as confirmed by H-1 NMR spectroscopy. The influence of the regioregularity on the chiroptical properties was investigated and they were compared with those of HT-poly(3-alkylthiophene)s and HT-poly(3-alkoxythiophene)s. UV-vis and circular dichroism spectroscopy revealed that both polymers self-organize into chiral supramolecular aggregates upon addition of a nonsolvent and in film. Remarkably, the regioregularity has (almost) no effect on the (chiral) supramolecular organization of poly (3-alkylthiothiophene)s.
ISSN: 0024-9297
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Molecular Imaging and Photonics
Polymer Chemistry and Materials
× corresponding author
# (joint) last author

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