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Water-dispersible polyaniline/nanotube composites

AutorJiménez, Pablo ; Benito, Ana M. ; Castell, Pere; Sainz, Raquel; Martínez Fernández de Landa, María Teresa; In het Panhuis, Marc; Maser, Wolfgang K.
Fecha de publicación7-jun-2009
CitaciónFrontiers in polymer science. International Symposium. 7-9 June 2009, Mainz (Germany)
ResumenCarbon nanotubes combined with electroactive polymers are considered to contribute to further progress in nanoelectronics and to the development of improved electronic and optoelectronic devices. Special emphasis lies on performance improvements coupled with the ability to advances in processing techniques from aqueous solutions. Both points are directly linked to favorable interactions between carbon nanotubes and the polymer chains and thus intimately related to the synthesis approach and self-assembling processes. As electrocactive polymer we use polyaniline as electrotroactive polymer. Our previous works [1] already showed exceptional synergetic effects and solubility in polar solvents. In this work we tackle the key issue of solubility in aqueous solutions of the conducting state of polyaniline-nanotube composites. Here, we applied a novel in-situ approach to achieve a polyaniline-nanotube composite in which polyaniline in its conducting form (emeraldine salt) and has a nanostructured morphology [2]. We could incorporate up to 50 wt% of carbon nanotubes and show that the properties of polyaniline and of nanotubes are preserved. In addition, the nanostructured morphology of polyaniline allowed to render this composite dispersable in water not involving any further stabilizers. The composite thus easily could be processed form aqueous dispersion by drop-casting or ink-jet printing processes. Electrochromic studies showed an enhanced doping/undoping kinetics due to the presence of nanotubes. The results of this work open new ways towards obtaining stable water-dispersable nanotube composite materials facilitating great flexibility in their further processing for various technological applications. [1] R. Sainz, A.M. Benito, M.T. Martínez, J.F. Galindo, J. Sotres, A.M. Baró, B. Corraze, B.; O. Chauvet, W.K. Maser, Advanced Materials 2005, 17(3), 278 -+ [2] Pablo Jiménez, Wolfgang K. Maser, Pere Castell, M.Teresa Martínez, Ana M. Benito, Macromolecular Rapid Communications, in press
Versión del editorhttp://www.frontiersinpolymerscience.com/posters.htm
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