Functionalised microgels: novel stabilisers for catalytically active metal colloids

Microgel stabilised palladium colloids have been prepared by a novel strategy based on the synthesis of microgels upon radical solution copolymerisation of suitable functional monomers containing sulfonic acid groups. These microgels can be conveniently loaded with Pd 2+ ions which are subsequently...

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Bibliographic Details
Published in:Journal of molecular catalysis. A, Chemical Chemical, 2001-01, Vol.165 (1), p.303-307
Main Author: Biffis, Andrea
Format: Article
Language:English
Subjects:
Heck reaction
Metal colloids
Microgels
Palladium
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Summary:Microgel stabilised palladium colloids have been prepared by a novel strategy based on the synthesis of microgels upon radical solution copolymerisation of suitable functional monomers containing sulfonic acid groups. These microgels can be conveniently loaded with Pd 2+ ions which are subsequently reduced. The resulting metal colloids (10–20 nm diameter) can be precipitated from the reaction mixture and redispersed in suitable solvents. Preliminary tests indicate that microgel stabilised palladium colloids are active catalysts for the vinylation of aryl iodides and bromides (Heck reaction).
ISSN:1381-1169
1873-314X
DOI:10.1016/S1381-1169(00)00436-2