Journal of Cluster Science

, Volume 19, Issue 2, pp 341–355 | Cite as

Functionalization of Silicon Nanoparticles via Silanization: Alkyl, Halide and Ester

Original Paper
First Online:
Received:
Accepted:

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.

Keywords

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

Acknowledgments

This work was supported by NSF grant (NIRT-0210807). We thank Jackie Gervay-Hague, Gang-yu Liu, Margie Longo, and Satya Dandekar for useful discussion, Shizhong Wang for his help with QY measurement, and John Neil for his assistance with powder X-ray diffraction. Katherine A. Pettigrew received support from an NSF IGERT “Nanomaterials in the Environment, Agriculture and Technology.” Work at the National Center for Electron Microscopy (NCEM) was performed under the auspices of the Director, Office of Energy Research, Office of Basic Energy Science, Materials Science Division, U.S. Department of Energy under Contract DE-Ac-03-76XF00098.

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Copyright information

© Springer Science+Business Media, LLC 2008

Authors and Affiliations

  1. 1.Department of ChemistryUniversity of California, DavisDavisUSA
  2. 2.Applied Materials Inc.SunnyvaleUSA

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