Open AccessMolecular Imprinting with Ruthenium Porphyrin Catalysts
Author(s) -
Estelle Burri,
Kay Severin
Publication year - 2006
Publication title -
chimia
Language(s) - English
Resource type - Journals
eISSN - 2673-2424
pISSN - 0009-4293
DOI - 10.2533/000942906777674868
Subject(s) - ruthenium , polymer , catalysis , porphyrin , polymerization , polymer chemistry , molecularly imprinted polymer , mesoporous material , molecular imprinting , materials science , copolymer , chemistry , chemical engineering , organic chemistry , selectivity , engineering
A ruthenium meso-tetra[4-(vinylbenzoxy)benzyl]porphyrin catalyst with four polymerizable side chains was synthesized in three steps from commercially available starting materials. The polymerizable side chains allowed the incorporation of this complex in highly cross-linked mesoporous co-polymers. A block polymer and a molecularly imprinted polymer were prepared by co-polymerization with ethyleneglycol dimethacrylate using chloroform as the porogen. The imprinted polymer was prepared in the presence of aminodiphenylmethane as a template. Subsequent removal of the template created a substrate pocket next to the catalytically active center. Both polymers displayed a high catalytic activity for the oxidation of alcohols and alkanes with 2,6-dichloropyridine-N-oxide as the oxidant while the homogeneous catalyst was completely inactive. Furthermore, the imprinted polymer displayed a significant increase in activity compared to the block co-polymer.