Electrochemical, morphological, and spectroscopic study of poly(aniline-co-o-bromoaniline) (PA-co-o-BrA) conducting copolymer
| Autor: | Umesh S. Waware, Gabriel J. Summers, Mohd Rashid, Abdel Magid Hamouda |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Conductive polymers
Cyclic voltammetry Materials science Poly-o-bromoaniline Polyaniline Scanning electron microscope Band gap General Chemical Engineering General Physics and Astronomy 02 engineering and technology 010402 general chemistry 01 natural sciences chemistry.chemical_compound Aniline Copolymer General Materials Science HOMO/LUMO chemistry.chemical_classification Oxidative copolymerization General Engineering Polymer 021001 nanoscience & nanotechnology 0104 chemical sciences chemistry SEM TEM Physical chemistry AFM 0210 nano-technology |
| Zdroj: | Ionics. 24:1701-1708 |
| ISSN: | 1862-0760 0947-7047 |
| DOI: | 10.1007/s11581-017-2335-z |
| Popis: | A series of moderately conducting and soluble copolymers of poly(aniline-co-o-bromoaniline) (PA-co-o-BrA) having different compositions was obtained by in the situ copolymerization method using different concentrations of monomer units of aniline and o-bromoaniline in the feed. The physio-chemical properties of the copolymers have been studied with sophisticated instrumental techniques. The electrochemical study of the copolymers was conducted by cyclic voltammetry. The band gap of the highest occupied molecular orbital (HOMO) and lowest unoccupied molecular orbital (LUMO) of the copolymers was evaluated by UV-vis spectroscopy. The morphological study was conducted by scanning electron microscopy and transmission electron microscopy at high magnification which shows non-uniform tubular to globular morphology of the copolymers. Surface profiles of the polymers were studied by AFM analyses, and it has confirmed the smooth surface of the copolymers while the homopolymers possesses non-uniform surfaces. The particle size distribution curve indicates that the particle sizes vary in the range of 5 to 9000 nm, and a small fraction of particles possess a size in the range of 5–10 nm. Scopus |
| Databáze: | OpenAIRE |
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