Electrosynthesis of Ionic Liquid Covalently Bounded to Mesoporous Silicate at a Three Phase Junction Electrode|Liquid|Liquid
|Joanna Niedziolka-Jonsson 1, Adam Lesniewski 1, Laurent Gaillon 2, Cecile Rizzi 2, Juliette Sirieix-Plenet 2|
1. Polish Academy of Sciences, Institute of Physical Chemistry, Kasprzaka 44/52, Warszawa 01-224, Poland
Silica based sol-gel processed organic-inorganic hybrids are becoming important materials for electrochemical applications due to their easily tuneable properties like functionalisation, immobilisation and encapsulation as well as the different structures of these materials (film, particles, monoliths) . They can be electrodeposited by electrochemical control of pH near the electrode|solution interface [2,3,4]. The generation of H3O+ ions – catalyst of the sol-gel process results in silicate film formation on the electrode surface. Recently, we proposed a three phase junction electrode|organic solvent|aqueous solution for silicate electrodeposition . The electrode is immersed into a container with two immiscible liquids. The organic (unsupported) phase contains the precursor of the sol-gel process. Electrochemical generation of catalyst (H3O+) in the aqueous phase causes hydrolysis of the precursor near the three phase junction and a silicate stripe is formed . It is also well-known that room temperature ionic liquids can be covalently bound to the organic-inorganic hybrids  to modify the electrode surfaces.
Presentation: Short communication at SMCBS'2009 International Workshop, by Joanna Niedziolka-Jonsson
See On-line Journal of SMCBS'2009 International Workshop
Submitted: 2009-09-11 12:24 Revised: 2009-11-02 15:39