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Alkali-Metal Monophenolates with a Sandwich-Type Catalytic Center as Catalysts for Highly Isoselective Polymerization of <i>rac</i>-Lactide

Abstract

Highly isoselective ring-opening polymerization (ROP) of <i>rac</i>-lactide is a challenge for sodium and potassium complexes under mild conditions. In this work, three sodium and potassium complexes with a sandwich-type catalytic center are highly active catalysts for the polymerization of <i>rac</i>-lactide and show high isoselectivities with <i>P</i><sub><i>m</i></sub> values of 0.72–0.82. The best isoselectivity of <i>P</i><sub><i>m</i></sub> = 0.82 is the highest value for alkali-metal complexes under mild conditions. The molecular weights of the obtained PLA are close to the theoretical values, and the molecular weight distributions are narrow

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The Francis Crick Institute

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Last time updated on 12/02/2018

This paper was published in The Francis Crick Institute.

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