Analytical and Bioanalytical Chemistry

, Volume 394, Issue 5, pp 1261–1272 | Cite as

Synthesis, characterisation and chromatographic evaluation of polyether dendrimer stationary phases

  • Gerard P. O’Sullivan
  • Norma M. Scully
  • Jean-Marie Prat
  • Jeremy D. Glennon
  • Benjamin Dietrich
  • Volker Friebolin
  • Klaus Albert
Original Paper


Supercritical carbon dioxide has attracted attention as a potential replacement for traditional organic solvents due to its simplified workup procedures and reduced environmental impact—providing a green chemistry approach for organic solvent-free functionalisation. In addition to the environmental benefits, the enhanced diffusivity observed in supercritical solvents can often enhance reaction rates. We have applied these valuable features to the preparation of silica-bonded stationary phases and examined their potential in liquid chromatography. We report the successful preparation and characterisation of polyether silica based on Frechet dendrimers—this significantly enhances the range of stationary-phase chemistries that can be prepared in supercritical fluids. First- and second-generation polyether silicas were prepared, characterised, end-capped and evaluated for use as stationary phases for liquid chromatography.


SRM1649 on 2nd generation polyether silica


Polyether stationary phases Frechet dendrimer Supercritical carbon dioxide Silica functionalisation 



GOS and NS thank IRCSET (the Irish Research Council for Science, Engineering and Technology) for EMBARK Postgraduate Research Scholarships. We thank Dr. Uwe Neue (Waters Corporation, USA) for donation of silica, Drs. Catherine Rimmer and Lane Sander (NIST) for provision of standard reference materials 869a and 1647e, and Waters Technologies, Ireland for assistance with column packing. We thank Dr. Dave Cocker (UCC) for advice and equipment which aided immeasurably in the preparation of the polyether substrates.

Supplementary material

216_2009_2670_MOESM1_ESM.pdf (339 kb)
(PDF 339 KB)


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Copyright information

© Springer-Verlag 2009

Authors and Affiliations

  • Gerard P. O’Sullivan
    • 1
  • Norma M. Scully
    • 1
  • Jean-Marie Prat
    • 1
  • Jeremy D. Glennon
    • 1
  • Benjamin Dietrich
    • 2
  • Volker Friebolin
    • 2
  • Klaus Albert
    • 2
  1. 1.Department of Chemistry, Analytical and Biological Chemistry Research Facility (ABCRF)University College CorkCorkIreland
  2. 2.Institüt für Organische ChemieUniversität TübingenTübingenGermany

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