PlumX Metrics
Embed PlumX Metrics

Amine-terminated silicon nanoparticles: Synthesis, optical properties and their use in bioimaging

Journal of Materials Chemistry, ISSN: 0959-9428, Vol: 19, Issue: 33, Page: 5926-5933
2009
  • 138
    Citations
  • 0
    Usage
  • 89
    Captures
  • 0
    Mentions
  • 0
    Social Media
Metric Options:   Counts1 Year3 Year

Metrics Details

  • Citations
    138
    • Citation Indexes
      137
    • Patent Family Citations
      1
      • Patent Families
        1
  • Captures
    89

Article Description

Very stable and bright emitting amine-terminated Si nanoparticles (NPs) with different alkyl chain lengths between the Si core and amine end-group are synthesized. The obtained NPs have a spherical shape and homogeneous size distribution (1.57 ± 0.24 nm). Their emission can be tuned from the UV to the blue spectral region, in a controllable fashion, by only changing the alkyl spacer length. The emission quantum yields are ∼12% for all synthesized Si NPs. Excited state lifetimes are in the ns range and point to a direct band gap excitation. NH-terminated Si NPs exhibit an exceptional stability over a wide pH range (1-13) and high temperatures (120 °C). The diffusion coefficient of prepared Si NPs is determined by fluorescence correlation spectroscopy (FCS) to be 3.3 × 10 m s . The derived size of Si NPs from mobility corresponds to 1.4 nm which is in a good agreement with the size obtained by transmission electron microscopy (TEM). Prepared Si NPs are shown to be highly suitable for bioimaging studies as they are readily taken up by BV2 cells. Si NPs are located in the cells cytosol. Proliferation of stained BV2 cells is observed and showed that newly formed cells are also stained with Si NPs, indicating their minimal toxicity. By using Si NPs it is possible to stain multiple cell generations by only staining the mother cells. © The Royal Society of Chemistry 2009.

Bibliographic Details

Milena Rosso-Vasic; Evan Spruijt; Barend Van Lagen; Han Zuilhof; Zoran Popović; David Domínguez-Gutiérrez; Luisa De Cola; Karin Overgaag; Daniel Vanmaekelbergh; Bruno Grandidier

Royal Society of Chemistry (RSC)

Chemistry; Materials Science

Provide Feedback

Have ideas for a new metric? Would you like to see something else here?Let us know