Multi-Block Copolymers Containing Oligoaniline Pentamer as Electroactive Segment

Autor:	Mircea Grigoras, Ana-Maria Catargiu, Valentina-Elena Musteata
Rok vydání:	2013
Předmět:	Materials science Pentamer General Chemistry Condensed Matter Physics Oligomer Gel permeation chromatography Crystallinity chemistry.chemical_compound Aniline chemistry Polyaniline Polymer chemistry Copolymer General Materials Science Cyclic voltammetry
Zdroj:	Soft Materials. 11:90-97
ISSN:	1539-4468 1539-445X
DOI:	10.1080/1539445x.2011.583512
Popis:	A multi-block copolymer, containing alternating flexible (1,12-bis phenoxy dodecamethylene) and rigid (aniline pentamer) segments was prepared by oxidative copolymerization of 1,4-phenylendiamine with a N-phenyl-1,4-phenylenediamine-capped oligomer. The copolymer exhibited good solubility in common organic solvents and preserved all electroactive properties of polyaniline. The copolymer structure was studied by gel permeation chromatography (GPC), Fourier-transform infrared (FT-IR), UV-Vis, and 1H-NMR spectroscopy. The wide-angle X-ray diffraction (XRD) spectrum of the copolymer showed a high degree of crystallinity attributed to the flexible alkylene spacers between oligoaniline segments that allow the folding of the chain and assembling of the rigid aniline pentamer segments and methylene zigzag chain in crystalline aggregates. The redox behavior of copolymer was studied by cyclic voltammetry, showing three redox peaks assigned to oxidation/reduction process between four oxidation states. The frequency ...
Databáze:	OpenAIRE
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