title: Biphasic aqueous organometallic catalysis promoted by cyclodextrins: can surface tension measurements explain the efficiency of chemically modified cyclodextrins?
abstract: Methylated and hydroxypropylated cyclodextrins (CDs) are highly efficient mass transfer promoters in biphasic aqueous organometallic processes. The surface tension measurements demonstrated that these CDs adsorb at air-water interface and allowed to determine surface excess of CD by using Gibbs adsorption equation. Interestingly, a good correlation between surface excess and catalytic activity was obtained in the case of hydroformylation and Tsuji-Trost reactions. These results point out the importance of CD adsorption at the interface in biphasic aqueous organometallic processes.
authors.affiliation: Laboratoire de Physico-Chimie des Interfaces et Applications, FRE CNRS 2485, Fédération Chevreul FR CNRS 2638, Université d'Artois, Rue Jean Souvraz, SP 18-62307 Lens Cédex, France.
authors.forename: Loïc
authors.initials: L
authors.lastname: Leclercq
authors.forename: Hervé
authors.initials: H
authors.lastname: Bricout
authors.forename: Sébastien
authors.initials: S
authors.lastname: Tilloy
authors.forename: Eric
authors.initials: E
authors.lastname: Monflier