Functionalization of silicon nanoparticles via silanization: Alkyl, halide and ester

Jing Zou, Susan M. Kauzlarich

Research output: Contribution to journalArticle

40 Scopus citations

Abstract

The feasibility of using silanization as a general tool to functionalize the surface of silicon nanoparticles (NPs) has been investigated in detail. Silicon NPs were prepared from reduction of silicon tetrachloride with sodium naphthalide. The terminal chloride on the surface of as-synthesized particles was substituted by methanol and water, in sequence. The particles were then silanized by octyltrichlorosilane, 11-bromoundecyltrichlorosilane, or 2-(carbomethoxy)ethyltrichlorosilane. These treatments yielded alkyl-, bromo-, or ester-termini on NP surfaces, respectively. The NPs were characterized by TEM, NMR, FTIR, UV-Vis, and PL spectroscopy. Changes of termination groups brought various functionalities to the NPs, without loss of the photophysics of the original NPs.

Original languageEnglish (US)
Pages (from-to)341-355
Number of pages15
JournalJournal of Cluster Science
Volume19
Issue number2
DOIs
StatePublished - Jun 2008

Keywords

  • Photoluminescence
  • Semiconductor quantum dot
  • Si QD
  • Si quantum dots
  • Silanization
  • Silicon nanoparticles

ASJC Scopus subject areas

  • Inorganic Chemistry

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