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Updated: Jan 15, 2026

Controlled Photoredox Ring-Opening Polymerization of O-Carboxyanhydrides Mediated by Ni/Zn Complexes
Published on: November 21, 2017
Mono- and dinuclear β-oxo-δ-diiminate (BODDI) based catalysts for the ring-opening polymerization of L-lactide
Fabian Seifert1, Dirk F-J Piesik2, Flavio L Portwich1
1Institute of Inorganic and Analytical Chemistry (IAAC), Friedrich Schiller University Jena, Humboldtstraße 8, 07743 Jena, Germany.
Abstract:
Polyesters such as polylactic acid belong to the most useful biodegradable polymers being able to substitute polyolefins in many applications. In search for potent catalysts based on bio-compatible and non-critical raw materials bimetallic cooperativity has emerged as a powerful approach, but one that is still in its infancy. Here, we report a comparative study on the catalytic activity of overall 13 mono- and dinuclear β-oxo-δ-diiminate (BODDI) complexes in the ring-opening polymerization (ROP) of L-lactide. Variation of the number of metal atoms, the metal, i.e., Li, Mg, Ca, and Zn, as well as of the secondary ligand crucially impacts on the activity of the catalysts and properties of the formed polymers.
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