Self-Assembled Nano-Needles of Polyaniline, Efficient Structures in Controlling Electrical Conductivity
| Autor: | Maria Bassil, Umit B. Demirci, Georges El Haj Moussa, Michael Ibrahim, Philippe Miele, Mario El Tahchi |
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| Přispěvatelé: | LABORATOIRE DE PHYSIQUE APPLIQUEE, Groupe des Biomatériaux et des Matériaux Intelligents (LPA-GBMI), UNIVERSITE LIBANAISE Faculté de Sciences II, Institut Européen des membranes (IEM), Centre National de la Recherche Scientifique (CNRS)-Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)-Université Montpellier 2 - Sciences et Techniques (UM2)-Institut de Chimie du CNRS (INC)-Université de Montpellier (UM) |
| Jazyk: | angličtina |
| Rok vydání: | 2011 |
| Předmět: |
Conductive polymer
Materials science Polyaniline nanofibers Nanoparticle 02 engineering and technology Hybrid solar cell Conductivity 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences chemistry.chemical_compound Crystallinity chemistry Chemical engineering Polyaniline Polymer chemistry [CHIM]Chemical Sciences Particle size 0210 nano-technology ComputingMilieux_MISCELLANEOUS |
| Zdroj: | MRS Online Proceedings Library Archive MRS Online Proceedings Library Archive, Cambridge University Press, 2011, 1312, ⟨10.1557/opl.2011.113⟩ |
| ISSN: | 1946-4274 |
| Popis: | Polyaniline (PANI) is one of the most interesting conducting polymers with a wide and controllable conductivity range, synthesized easily via chemical or electrical route, stable chemically and environmentally, having high absorption in the visible range and high mobility of charge carriers. Under different conditions, PANI morphology can be controlled yielding to the creation of nano-tubes, belts, rods, fibers and particles.In this study, the chemical oxidative polymerization which consists of mixing aniline hydrochloride (A-HCl) with ammonium peroxydisulfate (APS) was used to synthesize HCl doped PANI. Fixing the weight ratio A-HCl/APS defined by the IUPAC while varying their quantities leads to the formation of PANI nanoparticles with variable diameters. In addition, PANI nano-needles of 60 nm average diameter at the center are also obtained. Different methods are used to investigate of 1-D morphologies. The electrical conductivity of bulk PANI pellets is measured using the four-point probe technique. The absorption in the visible range of PANI particles and nano-needles is determined by UV-Vis spectroscopy. XRD analysis was performed to study the effect of PANI particle size and morphology on the crystallinity of the powder. Such structures could be used in hybrid solar cells for higher conversion efficiencies. |
| Databáze: | OpenAIRE |
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