Advanced Materials: TechConnect Briefs 2015Advanced Materials TechConnect Briefs 2015

Nanoparticle Synthesis & Applications Chapter 5

Ionic liquid: an innovative medium for nanofabrication

W. Darwich, C.C. Santini, F. Gaillard, P.-H. Haumesser
université de lyon 1, CNRS UMR 5265, France

pp. 328 - 331

Keywords: ionic liquid, porous silicon, nanoparticles, copper

Porous silicon (PSi) has been attracting a great attention as a breakthrough material with exceptional characteristics for microelectronics, layer transfer technology, solar and fuel cells, biomedicine, etc. Its properties can be modified by in introducing different materials into its pores. Ionic liquids (ILs) are known to be a smart medium to generate mono-disperse metallic NPs below 5 nm through a variety of processes (either chemical or physical). The aim of this work is to develop an efficient and safer “one pot” process to metallize PSi by decomposition of a metal-organic precursor in ILs. Mesitylcopper (CuMes) in solution is readily reduced under H2 in a stable suspension CuNPs of 5nm. On the one hand, this suspension can be deposited onto PSi in an ex situ approach. On the other one, the CuMes reduction can be performed in situ in the presence of PSi.