Affordable Access

Publisher Website

A fractionation process of mechanochemically synthesized blue-green luminescent alkyl-passivated silicon nanoparticles

Authors
Journal
Chemical Engineering Journal
1385-8947
Publisher
Elsevier
Publication Date
Volume
172
Issue
1
Identifiers
DOI: 10.1016/j.cej.2011.06.033
Keywords
  • Mechanochemistry
  • Nanoparticles
  • Silicon
  • Fractionation

Abstract

Abstract Blue-green luminescent (2.48–3.10 eV) alkyl-passivated silicon nanoparticles (Si NPs) were synthesized in a single step, facile procedure by high energy ball milling single crystal silicon (1 0 0) wafer in the presence of reactive 1-hexyne (C 6H 10). The subsequent fractionation process allows for the efficient recovery of excess alkyne, purification, and separation of 1-hexyne terminated silicon nanoparticles. This preparative column procedure isolates Si NPs with predominantly nonpolar surfaces as confirmed by FTIR. Samples exhibit photoluminescence emission energies of 2.46 eV for the retained fractions and 2.95 eV for eluted fractions, illustrating a dependence on the polarity of surface passivations.

There are no comments yet on this publication. Be the first to share your thoughts.