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The role of ether-functionalized ionic liquids in the sol-gel process: effects on the initial alkoxide hydrolysis steps.
Donato, Ricardo K; Lavorgna, Marino; Musto, Pellegrino; Donato, Katarzyna Z; Jager, Alessandro; Stepánek, Petr; Schrekker, Henri S; Matejka, Libor.
Afiliación
  • Donato RK; Institute of Macromolecular Chemistry, Heyrovský Sq. 2, 162 06 Prague 6, Czech Republic; Laboratory of Technological Processes and Catalysis, Institute of Chemistry, Universidade Federal do Rio Grande do Sul-UFRGS, Av. Bento Gonçalves, P.O. Box 15003, 9500 Porto Alegre, RS, Brazil. Electronic addres
  • Lavorgna M; Institute for Composite and Biomedical Materials, P.le E. Fermi 1, Loc. Granatello, 80055 Portici, NA, Italy.
  • Musto P; Institute of Chemistry and Technology of Polymers, Via Campi Flegrei 34, 80078 Pozzuoli, NA, Italy.
  • Donato KZ; Institute of Macromolecular Chemistry, Heyrovský Sq. 2, 162 06 Prague 6, Czech Republic; Laboratory of Technological Processes and Catalysis, Institute of Chemistry, Universidade Federal do Rio Grande do Sul-UFRGS, Av. Bento Gonçalves, P.O. Box 15003, 9500 Porto Alegre, RS, Brazil; Institute for Com
  • Jager A; Institute of Macromolecular Chemistry, Heyrovský Sq. 2, 162 06 Prague 6, Czech Republic.
  • Stepánek P; Institute of Macromolecular Chemistry, Heyrovský Sq. 2, 162 06 Prague 6, Czech Republic.
  • Schrekker HS; Laboratory of Technological Processes and Catalysis, Institute of Chemistry, Universidade Federal do Rio Grande do Sul-UFRGS, Av. Bento Gonçalves, P.O. Box 15003, 9500 Porto Alegre, RS, Brazil.
  • Matejka L; Institute of Macromolecular Chemistry, Heyrovský Sq. 2, 162 06 Prague 6, Czech Republic.
J Colloid Interface Sci ; 447: 77-84, 2015 Jun 01.
Article en En | MEDLINE | ID: mdl-25700213
ABSTRACT
The ether-functionalized imidazolium ionic liquids (IL) applied in the silica sol-gel process demonstrated a defined coordination potential. These IL display the capacity to control the system organization from the reactions' first moments through a dynamic system-assembling ability, being the sum of ionic and physical interactions, i.e. Coulomb forces, H-bonding and London forces. The initial hydrolysis steps of tetraethyl orthosilicate (TEOS) in the presence of these IL were followed by Fourier transform infrared spectroscopy (FTIR) and dynamic light scattering (DLS), both in time-resolved experiments, in an attempt to correlate the structuring and the bonding dynamics of these systems.
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Texto completo: 1 Colección: 01-internacional Banco de datos: MEDLINE Idioma: En Revista: J Colloid Interface Sci Año: 2015 Tipo del documento: Article
Texto completo
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XML
PubMed Links
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Texto completo: 1 Colección: 01-internacional Banco de datos: MEDLINE Idioma: En Revista: J Colloid Interface Sci Año: 2015 Tipo del documento: Article