Advanced search
1 file | 60.08 MB

Ultra-stable ring-type organosilicas with click modifiable groups : application as catalytic support and HPLC packing

Sander Clerick (UGent)
(2017)
Author
Promoter
(UGent) and (UGent)
Organization
Abstract
Organosilicas or polysilsesquioxane frameworks are attractive alternatives for commonly applied silica-based materials. Within these hybrid materials, the structural properties and robustness of inorganic supports are combined with embedded organic functionalities. Due to their resulting hydrolytic stability and functional versatility, organosilicas have successfully been applied in many fields of research. In this work, a deliberate suggestion towards an ultimate organosilica precursor in terms of versatility and stability is made. Subsequently, this new precursor is transformed into two distinctly different but highly adapted materials for further application. To serve as a catalytic support, a Periodic Mesoporous Organosilica (PMO), possessing highly uniform and ordered pores, is developed. Employing ‘click’ chemistry this material is further converted into a solid ligand able to accomodate a Ru(III)-complex. Such heterogeneous catalyst is found active in alcohol oxidation reactions performed in water at room temperature. Next to this, multiple approaches were investigated to obtain spherical and porous particles used as ultra-stable reverse-phase HPLC packing. The unprecedented stability of the organosilica at both high and low pH holds high promise for the development of new chromatographic methods. Its high-temperature stability, on the other hand, offers opportunities for extremely fast separations with a reduced amount of organic modifier.

Downloads

  • SanderClerick PhDDissertation Print.pdf
    • full text
    • |
    • open access
    • |
    • PDF
    • |
    • 60.08 MB

Citation

Please use this url to cite or link to this publication:

Chicago
Clerick, Sander. 2017. “Ultra-stable Ring-type Organosilicas with Click Modifiable Groups : Application as Catalytic Support and HPLC Packing”. Ghent, Belgium: Ghent University. Faculty of Sciences.
APA
Clerick, S. (2017). Ultra-stable ring-type organosilicas with click modifiable groups : application as catalytic support and HPLC packing. Ghent University. Faculty of Sciences, Ghent, Belgium.
Vancouver
1.
Clerick S. Ultra-stable ring-type organosilicas with click modifiable groups : application as catalytic support and HPLC packing. [Ghent, Belgium]: Ghent University. Faculty of Sciences; 2017.
MLA
Clerick, Sander. “Ultra-stable Ring-type Organosilicas with Click Modifiable Groups : Application as Catalytic Support and HPLC Packing.” 2017 : n. pag. Print.
@phdthesis{8542768,
  abstract     = {Organosilicas or polysilsesquioxane frameworks are attractive alternatives for commonly applied silica-based materials. Within these hybrid materials, the structural properties and robustness of inorganic supports are combined with embedded organic functionalities. Due to their resulting hydrolytic stability and functional versatility, organosilicas have successfully been applied in many fields of research. In this work, a deliberate suggestion towards an ultimate organosilica precursor in terms of versatility and stability is made. Subsequently, this new precursor is transformed into two distinctly different but highly adapted materials for further application. 
To serve as a catalytic support, a Periodic Mesoporous Organosilica (PMO), possessing highly uniform and ordered pores, is developed. Employing {\textquoteleft}click{\textquoteright} chemistry this material is further converted into a solid ligand able to accomodate a Ru(III)-complex. Such heterogeneous catalyst is found active in alcohol oxidation reactions performed in water at room temperature.
Next to this, multiple approaches were investigated to obtain spherical and porous particles used as ultra-stable reverse-phase HPLC packing. The unprecedented stability of the organosilica at both high and low pH holds high promise for the development of new chromatographic methods. Its high-temperature stability, on the other hand, offers opportunities for extremely fast separations with a reduced amount of organic modifier.},
  author       = {Clerick, Sander},
  language     = {eng},
  pages        = {XXX, 282},
  publisher    = {Ghent University. Faculty of Sciences},
  school       = {Ghent University},
  title        = {Ultra-stable ring-type organosilicas with click modifiable groups : application as catalytic support and HPLC packing},
  year         = {2017},
}