Polyethylenimine-modified metal oxides for fabrication of packed capillary columns for capillary electrochromatography and capillary liquid chromatography
| Autor: | Jan-Henrik Smått, Delphine Bourdin, Giovanni D'Orazio, Matias Kopperi, Salvatore Fanali, Maarit Kivilompolo, Jose Ruiz-Jimenez, Motolani Sakeye, Clara Baños-Pérez, Susanne K. Wiedmer, Marja-Liisa Riekkola |
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| Jazyk: | angličtina |
| Rok vydání: | 2011 |
| Předmět: |
Capillary action
Ionic bonding 02 engineering and technology Polyethyleneimine functionalized metal oxides Benzoates 01 natural sciences Biochemistry Slurry packing Analytical Chemistry chemistry.chemical_compound Electrokinetic phenomena Capillary electrochromatography nanocasting slurry packing metal oxides Polyethyleneimine Nanocasting Particle Size Alkyl chemistry.chemical_classification Polyethylenimine Aqueous solution Chromatography Capillary liquid chromatography Osmolar Concentration 010401 analytical chemistry Organic Chemistry Tin Compounds Oxides General Medicine Hydrogen-Ion Concentration capillary electrochromatography Silicon Dioxide 021001 nanoscience & nanotechnology 0104 chemical sciences chemistry polyethyleneimine functionalized metal oxides Surface modification Metal oxides Zirconium Magnesium Oxide 0210 nano-technology Hydrophobic and Hydrophilic Interactions Chromatography Liquid |
| Zdroj: | Journal of chromatography 1218 (2011): 5020–5029. doi:10.1016/j.chroma.2010.12.071 info:cnr-pdr/source/autori:S.K. Wiedmer, G. D'Orazio, J.H. Smatt, D. Bourdin, C. Banos-Perez, M. Sakeye, M. Kivilompolo, M. Kopperi, J. Ruiz-Jimenez, S. Fanali, M.L. Riekkola/titolo:Polyethylenimine-modified metal oxides for fabrication of packed capillary columns for capillary electrochromatography and capillary liquid chromatography/doi:10.1016%2Fj.chroma.2010.12.071/rivista:Journal of chromatography (Print)/anno:2011/pagina_da:5020/pagina_a:5029/intervallo_pagine:5020–5029/volume:1218 Wiedmer, S K, D'Orazio, G, Smått, J-H, Bourdin, D, Baños-Pérez, C, Sakeye, M, Kivilompolo, M, Kopperi, M, Ruiz-Jiménez, J, Fanali, S & Riekkola, M-L 2011, ' Polyethylenimine-modified metal oxides for fabrication of packed capillary columns for capillary electrochromatography and capillary liquid chromatography ', Journal of Chromatography A, vol. 1218, no. 30, pp. 5020-5029 . https://doi.org/10.1016/j.chroma.2010.12.071 |
| DOI: | 10.1016/j.chroma.2010.12.071 |
| Popis: | The need for novel packing materials in both capillary electrochromatography (CEC) and capillary liquid chromatography (CLC) is apparent and the development towards more selective, application-oriented chromatographic phases is under progress world-wide. In this study we have synthesized new polyethyleneimine (PEI) functionalized Mn2O3, SiO2, SnO2, and ZrO2 particles for the fabrication of packed capillary columns for CEC and CLC. The nanocasting approach was successful for the preparation of functionalized metal oxide materials with a controlled porosity and morphology. PEI functionalization was done using ethyleneimine monomers to create particles which are positively charged in aqueous solution below pH 9. This functionalization allowed the possibility to have both hydrophobic (due to its alkyl chain) and ionic interactions (due to positively charged amino groups) with selected compounds. For comparison aminopropyl-functionalized silica was also synthesized and tested. Both slurry pressure and electrokinetic packing procedures used gave similar results, but fast sedimentation of the material caused some problems during the packing. The high stability and wide pH range of PEI-functionalized SiO2 material, with potential for hydrophobic and electrostatic interactions, proved to be useful for the CEC and CLC separation of some model acidic and neutral compounds. |
| Databáze: | OpenAIRE |
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