Uncatalyzed synthesis of polypyrrole with viologen side groups and its chemical properties
Identifieur interne : 002658 ( Main/Merge ); précédent : 002657; suivant : 002659Uncatalyzed synthesis of polypyrrole with viologen side groups and its chemical properties
Auteurs : Isao Yamaguchi [Japon] ; Tomonori Asano [Japon]Source :
- Journal of Materials Science [ 0022-2461 ] ; 2011-07-01.
Abstract
Abstract: A substituted polypyrrole (PPr) with viologen side groups (polymer-1) was obtained from the reaction of N-aminopyrrole with 1-hexyl-1′-(2,4-dinitrophenyl)-4,4′-bipyridinium dihalide (salt-1). A model compound (model-1) was synthesized by the reaction of N-aminopyrrole with N-(2,4-dinitrophenyl)-4-(4-pyridyl)pyridinium chloride (salt-2). UV–vis spectra revealed that polymer-1 had an expanded π-conjugation system along the polymer chain: the polymer showed an onset position of absorption at a wavelength approximately 200 nm longer than the corresponding wavelength of model-1. Polymer-1 received an electrochemical oxidation of the pyrrole ring and reduction of the viologen group within the polymer.
Url:
DOI: 10.1007/s10853-011-5357-3
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