Thiophene based hyperbranched polymers with tunable branching using direct arylation methods
Literature Information
Publication Date
2013-04-15
DOI
10.1039/C3PY00412K
Impact Factor
5.582
Authors
Forrest E. Michael
View Original
Abstract
An efficient one-pot synthesis of branched poly(3-alkylthiophene)s (b-P3ATs) is achieved via a dehydrohalogenative polycondensation reaction. The structures of the b-P3ATs are assigned based on 1H NMR spectra by comparing them to a model dendritic polymer and oligo(3-hexylthiophene-2,4-diyl). The palladium-catalyzed dehydrohalogenative polycondensation of 2-bromo-3-alkylthiophenes was found to provide P3AT with tunable degree of branching (DB = 0–0.42) and high molecular weights. Viscosity measurements of the different b-P3ATs indicate that they display a more globular morphology compared to regiorandom P3AT and regioregular P3AT in solution, thereby confirming the branched structure.
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Polymer Chemistry
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