High-Activity, Single-Site Catalysts for the Alternating Copolymerization of CO2 and Propylene Oxide

Despite recent advances regarding catalysts for CO2/epoxide copolymerization, the development of high-activity catalysts for alternating polymerization of CO2 and commodity epoxides, such as propylene oxide, remains a challenge. A new class of unsymmetrically substituted β-diiminate zinc complexes i...

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Bibliographic Details
Published in:Journal of the American Chemical Society 2002-12, Vol.124 (48), p.14284-14285
Main Authors: Allen, Scott D, Moore, David R, Lobkovsky, Emil B, Coates, Geoffrey W
Format: Article
Language:English
Subjects:
Applied sciences
Copolymerization
Exact sciences and technology
Organic polymers
Physicochemistry of polymers
Preparation, kinetics, thermodynamics, mechanism and catalysts
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Summary:Despite recent advances regarding catalysts for CO2/epoxide copolymerization, the development of high-activity catalysts for alternating polymerization of CO2 and commodity epoxides, such as propylene oxide, remains a challenge. A new class of unsymmetrically substituted β-diiminate zinc complexes is reported that exhibits unprecedented activity for CO2/propylene oxide copolymerization. The polymers formed are of high molecular weight (M n ≈ 35 kg/mol) and have narrow polydispersities (PDI ≈ 1.1), consistent with a living polymerization.
ISSN:0002-7863
1520-5126
DOI:10.1021/ja028071g