Skip to Main content Skip to Navigation
Journal articles

Continuous flow catalysis with a biomimetic copper(II) complex covalently immobilized on graphite felt

Abstract : The catecholase activity of a copper(II) complex coordinated by a tripodal pyrazole-based ligand was investigated in continuous flow catalysis. The covalent immobilization of the complex on the surface was achieved by a two steps method. First, the porous graphite felt support is functionalized by electrochemical reduction of 4-carboxymethyl-benzenediazonium salts. Second, the complex is covalently immobilized by esterification reaction between the COOH-containing linker and a primary alcohol group present on the C6 chain of the ligand. The two steps of the immobilization process were optimized by using nitro-containing molecules and cyclic voltammetry analyses. The copper complex exhibits higher catecholase activity in continuous flow catalysis than in solution with a 50 times lower amount of catalyst, underlining the advantages of the flow procedure. The presence of H2O2 is detected after catalysis, showing that the four-electron reduction of dioxygen to water does not occur unlike the natural enzyme.
Document type :
Journal articles
Complete list of metadatas

Cited literature [7 references]  Display  Hide  Download

https://hal-univ-rennes1.archives-ouvertes.fr/hal-00842808
Contributor : Laurent Jonchère <>
Submitted on : Tuesday, July 9, 2013 - 2:49:29 PM
Last modification on : Friday, July 10, 2020 - 4:18:31 PM
Long-term archiving on: : Thursday, October 10, 2013 - 4:10:08 AM

Files

JCat2012Geneste_HAL-postprint....
Files produced by the author(s)

Identifiers

Citation

Ronan Marion, Gopinathan Muthusamy, Florence Geneste. Continuous flow catalysis with a biomimetic copper(II) complex covalently immobilized on graphite felt. Journal of Catalysis, Elsevier, 2013, 286, pp.266-272. ⟨10.1016/j.jcat.2011.11.011⟩. ⟨hal-00842808⟩

Share

Metrics

Record views

305

Files downloads

408