Effect of Ionic Liquid (emim BF4) on the Dispersion of Gold Nanoparticles

Mohamed R. Tchalala, Dalaver H. Anjum, Sahraoui Chaieb

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A simple method has been described for the design of hybrid materials made of 1-ethyl- 3-methylimidazolium tetrafluoroborate (emim BF4) stabilized gold (0) nanoparticles providing clear evidence about the coordination and stabilization behavior of imidazolium ionic liquids. The monodispersed gold nanoparticles were thoroughly verified by steady state spectroscopy and TEM microscopy, the hybrid material in comparison with the bare Au nanoparticles. This study revealed enhanced emission and a red-shifted absorption band which is attributed to charge transfer from IL to gold nanoparticles.TEM images of the nanoparticles corroborated the steady state results and showed similar particle sizes furthermore the nanoparticles appear often surrounded by IL layers. Based on the experiment results, which favor the interaction between IL anions instead of IL cations, we suggest the existence of an Au - F interaction and anionic Au-BF4 stabilization in the fluorine- containing ILs.

Original languageBritish English
Article number012020
JournalJournal of Physics: Conference Series
Issue number1
StatePublished - 19 Oct 2016
Event3rd Euro-Mediterranean Conference on Materials and Renewable Energies, EMCMRE 2015 - Marrakech, Morocco
Duration: 2 Nov 20156 Nov 2015


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