High-activity, single-site catalysts for the alternating copolymerization of CO2 and propylene oxide

被引:287
作者
Allen, SD [1 ]
Moore, DR [1 ]
Lobkovsky, EB [1 ]
Coates, GW [1 ]
机构
[1] Cornell Univ, Baker Lab, Dept Chem & Biol Chem, Ithaca, NY 14853 USA
关键词
D O I
10.1021/ja028071g
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
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 (Mn ≈ 35 kg/mol) and have narrow polydispersities (PDI ≈ 1.1), consistent with a living polymerization. Copyright © 2002 American Chemical Society.
引用
收藏
页码:14284 / 14285
页数:2
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