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2016-12-01 - Colloque/Présentation - poster - Anglais - 1 page(s)

Carette Xavier , Gautron Eric, El Mel Abdel Aziz, Snyders Rony , Raquez Jean Marie , Konstantinidis Stéphanos , "Sputtering metal atoms onto liquid substrates: Towards the synthesis of polymer - metal nanoparticles composites" in International Conference on Reactive Sputter Deposition, Gent, Belgium, 2016

  • Codes CREF : Physique de l'état solide (DI1261), Physique des surfaces (DI1265), Chimie des solides (DI1316), Physique des plasmas (DI1233), Sciences exactes et naturelles (DI1000)
  • Unités de recherche UMONS : Chimie des interactions plasma-surface (S882)
  • Instituts UMONS : Institut de Recherche en Science et Ingénierie des Matériaux (Matériaux)
  • Centres UMONS : Centre d’Innovation et de Recherche en Matériaux Polymères (CIRMAP)

Abstract(s) :

(Anglais) A way to develop new functional polymers with enhanced properties, is by incorporating nanoparticles (NP) into a polymer matrix. In this case, the challenges are i) to control with great precision the dispersion of the NP inside the matrix and ii) to tailor the size, shape and chemical composition of the NPs. The production of a vapor of metal atoms through plasma – based sputtering of a metal target and the consecutive condensation of these atoms onto the surface of an ionic liquid (IL) solution appears to be an attractive pathway to synthesize, in-situ, high purity NPs [1], [2]. Several articles have reported that ILs are capable to efficiently disperse the NPs during such sputtering–based processes [3]–[5]. However, many parameters may influence the properties of the NP such as electrical sputter power, gas pressure, chemical nature of the IL,… but so far, the mechanism of formation of these NP in these conditions has not been fully understood. Therefore, our first goal is to contribute towards the better understanding of the interaction between the plasma, the sputtered metal atoms, and the surface of functionalized ILs in order to control the synthesis of these NP. Ultimately, we aim at synthesizing polymer–metal NP composites from a combination of magnetron sputtering onto properly functionalized ILs solutions. As a model system, we have chosen to sputter silver atoms onto imidazolium-type ILs in order to synthesize poly(methyl methacrylate) / Ag-NP matrices. UV-Vis spectroscopy data reveal that the so-treated ILs solutions absorb light at ~410 nm. The position of this absorption maximum does not change as the sputter pressure and power are varied. Our results also demonstrate that spherical, yet crystalized, Ag-NPs are produced. The NPs have a diameter ranging from ~5 to ~20 nm. From these experimental data, one can assume that the NP are preferably growing underneath the surface of the liquid. Bibliographic references [1] V. K. Rao et al. ACS Appl. Mater. Interfaces, vol. 7, no. 23, pp. 12767–12773, 2015. [2] E. Vanecht et al. Phys. Chem. Chem. Phys., vol. 13, no. 30, pp. 13565–13571, 2011. [3] T. Torimoto et al. Adv. Mater., vol. 22, no. 11, pp. 1196–1221, 2010. [4] H. Wender et al. J. Phys. Chem. C, vol. 115, no. 33, pp. 16362–16367, Aug. 2011. [5] H. Wender et al. Coord. Chem. Rev., vol. 257, no. 17–18, pp. 2468–2483, Sep. 2013.