期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 60, 期 40, 页码 21795-21800出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.202109053
关键词
ATRP; copolymerization; iron; orthogonal catalysis; ROP
资金
- Deutsche Bundesstiftung Umwelt (DBU)
- RWTH Aachen University [PFKA007]
- Projekt DEAL
The study demonstrates the synthesis of block copolymers simultaneously polymerizing lactide and styrene using iron guanidine catalyst, showcasing the versatility of the catalyst in different polymerization mechanisms. This orthogonal copolymerization by a benign iron catalyst opens up new pathways to biocompatible polymerization procedures, expanding the scope of ATRP applications.
Copolymers are the answer to property limitations of homopolymers. In order to use the full variety of monomers available, catalysts active in more than one polymerization mechanism are currently investigated. Iron guanidine catalysts have shown to be extraordinarily active in ROP of lactide and herein prove their versatility by also promoting ATRP of styrene. The presented iron complex is the first polymerizing lactide and styrene simultaneously to a defined block copolymer in a convenient one-pot synthesis. Both mechanisms work hand in hand with ROP using the dominantly present Fe-II species on the dormant side of the ATRP equilibrium. This orthogonal copolymerization by a benign iron catalyst opens up new pathways to biocompatible polymerization procedures broadening the scope of ATRP applications.
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