Study on the formation of a supramolecular conjugated graft copolymer in solution |
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| Authors: | Tine Hardeman Pieter Willot Julien De Winter Thomas Josse Pascal Gerbaux Pavletta Shestakova Erik Nies Guy Koeckelberghs |
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| Affiliation: | 1. Laboratory for Polymer Synthesis, Division of Polymer Chemistry & Materials, , Heverlee (Leuven), Belgium;2. Mass Spectrometry Research Group, Interdisciplinary Center for Mass Spectrometry, University of Mons‐UMONS, , 7000 Mons, Belgium;3. NMR Laboratory, Institute of Organic Chemistry with Centre of Phytochemistry, Bulgarian Academy of Sciences, , 1113 Sofia, Bulgaria;4. Laboratory for Physical Chemistry of Polymer Materials, Division of Polymer Chemistry & Materials, , 3001 Heverlee (Leuven), Belgium |
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| Abstract: | The formation in solution of a supramolecular graft copolymer bearing conjugated blocks is demonstrated using diffusion ordered NMR spectroscopy (DOSY). A tailor‐made poly(3‐(2‐ethylhexyl)thiophene) (P3EHT) with a phenol end group is synthesized. For this purpose, the chain‐growth mechanism of the polymerization of 2‐bromo‐5‐chloromagnesio‐3‐alkylthiophenes in the presence of a Ni(dppp) catalyst (dppp = 1,3‐bis(triphenylphosphino)propane) is exploited, as it enables the use of functionalized initiators to introduce specific end groups. The so‐obtained polythiophene was subsequently mixed in solution with poly(4‐vinylpyridine) (P4VP) to enable phenol‐pyridine hydrogen bonding. The formation of the supramolecular graft copolymer is studied using DOSY‐measurements. Based on the results thereof, the amount of P3EHT attached to the P4VP is calculated and the association constant of the hydrogen bond is estimated. © 2013 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2014 , 52, 804–809 |
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| Keywords: | conjugated polymers DOSY graft copolymers hydrogen bonding supramolecular structures |
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