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Enhanced long-term stability of functionalized silicon nanoparticles using esters

  • Anoop Gupta (a1), Sebastian Kluge (a2), Christof Schulz (a3) and Hartmut Wiggers (a4)

Abstract

The surface of freshly etched silicon nanoparticles (Si-NPs) was covalently bonded with alkyl groups and esters via thermally induced hydrosilylation. The surface chemistry of functionalized Si-NPs was analyzed at different air exposure time by means of Fourier transform infrared spectroscopy (FTIR). We observed that the stability of functionalized Si-NPs significantly depends on the type of organic ligands attached to their surface. Ester-terminated Si-NPs exhibit higher stability compared to that are bonded with alkyl groups. We show that the use of esters with large spatial configuration causes a lower surface coverage of Si-NPs but at the same time offers better protection against surface oxidation.

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Keywords

Enhanced long-term stability of functionalized silicon nanoparticles using esters

  • Anoop Gupta (a1), Sebastian Kluge (a2), Christof Schulz (a3) and Hartmut Wiggers (a4)

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