Inside Cover: Master of Chaos and Order: Opposite Microstructures of PCL‐co‐PGA‐co‐PLA Accessible by a Single Catalyst (Angew. Chem. Int. Ed. 11/2022)

The iron guanidine catalyst shows extraordinary copolymerization activity towards lactide, glycolide, and ϵ‐caprolactone, as reported by Sonja Herres‐Pawlis, Moshe Kol, and co‐workers in their Research Article (e202112853). Depending on the reaction temperature and the mode of monomer addition, it e...

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Published inAngewandte Chemie International Edition Vol. 61; no. 11
Main Authors Rittinghaus, Ruth D., Zenner, Johannes, Pich, Andrij, Kol, Moshe, Herres‐Pawlis, Sonja
Format Journal Article
LanguageEnglish
Published 07.03.2022
Subjects
Block Copolymers
Caprolactone
Glycolide
Iron
Lactide
Random Copolymers
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Summary:The iron guanidine catalyst shows extraordinary copolymerization activity towards lactide, glycolide, and ϵ‐caprolactone, as reported by Sonja Herres‐Pawlis, Moshe Kol, and co‐workers in their Research Article (e202112853). Depending on the reaction temperature and the mode of monomer addition, it either forms up to pentablock copolymers in a highly defined way or promotes transesterifications to such a high degree that random copolymers are produced. Therefore, it is a rare example of a catalyst mastering both microstructures: ordered and chaotic.
ISSN:1433-7851
1521-3773
DOI:10.1002/anie.202201562