期刊
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
卷 132, 期 41, 页码 14367-14369出版社
AMER CHEMICAL SOC
DOI: 10.1021/ja106484t
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Appropriate modification of the salphen ligand allows an easy modular design of flexibly linked dimeric salphen species and their complexes, which can act as bifunctional catalysts. A series of chromium salphen systems including monomeric compound and dimers with different spacer lengths were tested for their catalytic performance in beta-butyrolactone polymerization and CO2/propylene oxide copolymerization toward biodegradable materials. The results clearly show an enhancement in activity upon dimerization, thus underlining the role of bifunctional catalysis in the studied processes and extending the possible strategies for improvement of catalysts in these reactions.
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