Zirconium vs aluminum salalen initiators for the production of biopolymers

Research output: Contribution to journalArticlepeer-review

27 Citations (SciVal)
52 Downloads (Pure)


Herein we report the synthesis and full characterization (NMR and solid-state structures) for a series of Zr(IV), Hf(IV), and Al(III) salalen complexes, together with salen bimetallic counterparts. With the salalen ligand, 1H2, monometallic complexes were observed in solution and solid state. Complex Zr(1)(OiPr)2 was able to produce isotactic polylactide (PLA) from rac-lactide (Pm up to 0.85) in solution at 50 °C; in the melt (130 °C) this reduced to ca. 0.75. Al(1)Me was significantly less active and produced PLA with only a very modest isotactic enchainment (Pm ≈ 0.6). Zr(1)(OiPr)2 was also able to produce copolymers with lactide and ϵ-caprolactone, producing copolymers of a "blocky" nature.

Original languageEnglish
Pages (from-to)3837-3843
Number of pages7
Issue number22
Publication statusPublished - 28 Nov 2016


Dive into the research topics of 'Zirconium vs aluminum salalen initiators for the production of biopolymers'. Together they form a unique fingerprint.

Cite this