New Challenge for Classics: Neutral Zinc Complexes Stabilised by 2,2’-Bipyridine and 1,10-Phenanthroline and Their Application in the Ring-Opening Polymerisation of Lactide

Janna Börner, Ulrich Flörke, Artjom Döring, Dirk Kuckling, Matthew D. Jones and Sonja Herres-Pawlis
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Janna Börner: Department Chemie, Universität Paderborn, Warburger Straße 100, 33098 Paderborn, Germany
Ulrich Flörke: Department Chemie, Universität Paderborn, Warburger Straße 100, 33098 Paderborn, Germany
Artjom Döring: Department Chemie, Universität Paderborn, Warburger Straße 100, 33098 Paderborn, Germany
Dirk Kuckling: Department Chemie, Universität Paderborn, Warburger Straße 100, 33098 Paderborn, Germany
Matthew D. Jones: Department of Chemistry, University of Bath, Claverton Down, Bath BA27AY, UK
Sonja Herres-Pawlis: Department Chemie, Technische Universität Dortmund, Otto-Hahn-Straße 6, 44227 Dortmund, Germany

Sustainability, 2009, vol. 1, issue 4, 1-14

Abstract: The zinc acetato and triflato complexes of 2,2’-bipyridine and 1,10-phenanthroline were prepared and completely characterised. The whole series (including the already described dichlorido complexes and the ligands themselves) were screened for their catalytic activity in the solvent free ring-opening polymerisation of D,L-lactide. The acetato and triflato complexes were found to be active initiators and polylactides could be obtained in almost quantitative yields or with high molecular weights, up to 145,000 g/mol.

Keywords: biopolymers; zinc; ring-opening polymerisation; lactide; sustainable chemistry; N-donor ligands (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2009
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