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Communication

Switching the Lactide Polymerization Activity of a Cerium Complex by Redox Reactions

  1. Andreas Sauer1,
  2. Jean-Charles Buffet1,
  3. Thomas P. Spaniol1,
  4. Haruki Nagae2,
  5. Prof. Kazushi Mashima2,
  6. Prof. Jun Okuda1,*

Article first published online: 20 DEC 2012

DOI: 10.1002/cctc.201200705

Issue

ChemCatChem

ChemCatChem

Special Issue: Homogeneous Catalysis

Volume 5, Issue 5, pages 1088–1091, May 2013

Additional Information

How to Cite

Sauer, A., Buffet, J.-C., Spaniol, T. P., Nagae, H., Mashima, K. and Okuda, J. (2013), Switching the Lactide Polymerization Activity of a Cerium Complex by Redox Reactions. ChemCatChem, 5: 1088–1091. doi: 10.1002/cctc.201200705

Author Information

  1. 1

    Institute of Inorganic Chemistry, RWTH Aachen University, Landoltweg 1, 52056 Aachen (Germany), Fax: (+49) 241-8092644

  2. 2

    Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531 (Japan)

*Institute of Inorganic Chemistry, RWTH Aachen University, Landoltweg 1, 52056 Aachen (Germany), Fax: (+49) 241-8092644

Publication History

  1. Issue published online: 26 APR 2013
  2. Article first published online: 20 DEC 2012
  3. Manuscript Revised: 2 NOV 2012
  4. Manuscript Received: 7 OCT 2012

Funded by

  • Deutsche Forschungsgemeinschaft
  • Japan Society for the Promotion of Science

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Keywords:

  • cerium;
  • polymers;
  • ring-opening polymerization;
  • reduction;
  • oxidation
Thumbnail image of graphical abstract

The old switcheroo! The ring-opening polymerization activity towards meso-lactide significantly differs when cerium complexes with two bis(phenolate) ligands (OSSO type) change their oxidation state from +4 to +3. This switch can be performed in situ by chemical reduction or oxidation of the catalyst. The redox switching is possible up to three times in a row. PLA=polylactide.

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