Study on the formation of a supramolecular conjugated graft copolymer in solution. Issue 6 (23rd December 2013)

• Record Type: Journal Article
• Authors: Hardeman, Tine; Willot, Pieter; Winter, Julien De; Josse, Thomas; Gerbaux, Pascal; Shestakova, Pavletta; Nies, Erik; Koeckelberghs, Guy
• Is Part Of: Journal of polymer science. Volume 52:Issue 6(2014:Mar.)
• Page Start: 804
• Page End: 809
• Publication Date: 2013-12-23
• Subjects: 547
• DOI: 10.1002/pola.27060
• Languages: English
• ISSNs: 0887-624X

Abstract

<abstract abstract-type="main"> <title>ABSTRACT</title> <p>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. <bold>2014</bold>, <italic>52</italic>, 804–809</p> </abstract>