Jump to main content
Jump to site search

Issue 16, 2015
Previous Article Next Article

From rational design of organometallic precursors to optimized synthesis of core/shell Ge/GeO2 nanoparticles

Author affiliations

Abstract

The synthesis of germanium nanoparticles has been carried out, thanks to the design of novel aminoiminate germanium(II) precursors: (ATI)GeZ (with Z = OMe, NPh2, and ATI = N,N′-diisopropyl-aminotroponiminate) and (Am)2Ge (Am = N,N′-bis(trimethylsilyl)phenyl amidinate). These complexes were fully characterized by spectroscopic techniques as well as single crystal X-ray diffraction. The thermolysis of both complexes yielded NPs which display similar features that are a Ge/GeO2 core/shell structure with a mean diameter close to 5 nm with a narrow size distribution (<15%). Whereas the high temperatures (>300 °C) classically reported in the literature for the preparation of germanium-based NPs were necessary for thermolysis of the complexes (ATI)GeZ, the use of amidinate-based precursors allows the preparation at an unprecedented low temperature (160 °C) for the thermolytic route. As suggested by a mechanistic study, the lower reactivity of (ATI)GeZ (for which the concomitant use of high temperature and acidic reagent is required) was explained in terms of lower ring strain compared to the case of (Am)2Ge.

Graphical abstract: From rational design of organometallic precursors to optimized synthesis of core/shell Ge/GeO2 nanoparticles

Back to tab navigation

Supplementary files

Publication details

The article was received on 28 Jan 2015, accepted on 09 Mar 2015 and first published on 10 Mar 2015


Article type: Paper
DOI: 10.1039/C5DT00392J
Author version
available:
Download author version (PDF)
Citation: Dalton Trans., 2015,44, 7242-7250
  •   Request permissions

    From rational design of organometallic precursors to optimized synthesis of core/shell Ge/GeO2 nanoparticles

    D. Matioszek, W.-S. Ojo, A. Cornejo, N. Katir, M. El Ezzi, M. Le Troedec, H. Martinez, H. Gornitzka, A. Castel, C. Nayral and F. Delpech, Dalton Trans., 2015, 44, 7242
    DOI: 10.1039/C5DT00392J

Search articles by author

Spotlight

Advertisements