Chemical Communications 2012-07-11

Highly controlled immortal polymerization of β-butyrolactone by a dinuclear indium catalyst.

Cuiling Xu, Insun Yu, Parisa Mehrkhodavandi

Index: Chem. Commun. (Camb.) 48(54) , 6806-8, (2012)

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Abstract

An ethoxy-bridged dinuclear indium catalyst was used for the ring opening polymerization of the cyclic ester β-butyrolactone to form the biodegradable polyester poly(hydroxybutyrate) (PHB). The catalyst shows remarkable activity and control during polymerization, allowing for formation of diblock polymers. Addition of high ratios of alcohols to the catalyst leads to fast chain transfer and immortal polymerization.

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