Aminopropyl-functionalized ethane-bridged periodic mesoporous organosilica spheres: preparation and application in liquid chromatography

J Chromatogr A. 2011 Jan 21;1218(3):408-15. doi: 10.1016/j.chroma.2010.11.048. Epub 2010 Nov 27.

Abstract

A synthetic approach for synthesizing spherical aminopropyl-functionalized ethane-bridged periodic mesoporous organosilicas (APEPMOs) is reported. The mesoporous material was prepared by a one-step co-condensation of 1,2-bis(triethoxysilyl)ethane (BTSE) and 3-aminopropyltriethoxysilane (APTES) using cetyltrimethylammonium chlorine (C(18)TACl) as a template with the aid of a co-solvent (methanol) in basic medium. The APEPMOs were characterized by transmission electron microscopy (TEM), scanning electron microscopy (SEM), powder X-ray diffraction (XRD), nitrogen sorption measurement, Fourier transform infrared spectroscopy (FT-IR) and elemental analysis. It was shown that this material exhibited spherical morphology, ordered cubic mesostructure and good mechanical strength. The APEPMOs were tested as a potential stationary phase for liquid chromatography (LC) because the column exhibited reduced back pressure. Moreover, they exhibited good chemical stability in basic mobile phase, which can be ascribed to the ethane groups in the mesoporous framework.

MeSH terms

  • Benzene / chemistry
  • Chromatography, Liquid / methods*
  • Ethane / chemistry*
  • Hydrogen-Ion Concentration
  • Microscopy, Electron, Transmission
  • Microspheres
  • Organosilicon Compounds / chemistry*
  • Particle Size
  • Porosity
  • Pressure
  • Propylamines
  • Silanes / chemistry
  • Spectroscopy, Fourier Transform Infrared
  • X-Ray Diffraction

Substances

  • Organosilicon Compounds
  • Propylamines
  • Silanes
  • 1,2-bis(triethoxysilyl)ethane
  • Benzene
  • amino-propyl-triethoxysilane
  • Ethane