Cited by 165biodegradable polymer synthesis and propertiesAdvanced Polymer Synthesis and CharacterizationOrganometallic Complex Synthesis and Catalysis

Block Copolymerization of Lactide and an Epoxide Facilitated by a Redox Switchable Iron‐Based Catalyst

Biernesser, Ashley B., Delle Chiaie, Kayla R., Curley, Julia B., Byers, Jeffery A.·2016·Angewandte Chemie International Edition

Abstract

A cationic iron(III) complex was active for the polymerization of various epoxides, whereas the analogous neutral iron(II) complex was inactive. Cyclohexene oxide polymerization could be “switched off” upon in situ reduction of the iron(III) catalyst and “switched on” upon in situ oxidation, which is orthogonal to what was observed previously for lactide polymerization. Conducting copolymerization reactions in the presence of both monomers resulted in block copolymers whose identity can be controlled by the oxidation state of the catalyst: selective lactide polymerization was observed in the iron(II) oxidation state and selective epoxide polymerization was observed in the iron(III) oxidation state. Evidence for the formation of block copolymers was obtained from solubility differences, GPC, and DOSY‐NMR studies.

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Crossref · 10.1002/anie.201511793

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15 of 15 references verified0 citation errors · 0 not checkable

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  • This allowed the formation of clean diblock copolymers.

    “This allowed the formation of clean diblock copolymers.”

    From Catalysis as an Enabling Science for Sustainable Polymers (2018) · cites this paper as [320]

  • Unlike the previous case, the two monomers exhibited orthogonal reactivity with one being completely inactive during the polymerization of the other.

    “Unlike the previous case, the two monomers exhibited orthogonal reactivity with one being completely inactive during the polymerization of the other.”

    From Catalysis as an Enabling Science for Sustainable Polymers (2018) · cites this paper as [320]

  • Byers developed a chemoselective copolymerization of LA and epoxides using a redox-switchable iron catalyst.

    “In the similar vein, Byers developed a chemoselective copolymerization of LA and epoxides using a redox-switchable iron catalyst (Scheme 8B).320”

    From Catalysis as an Enabling Science for Sustainable Polymers (2018) · cites this paper as [320]

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Authors
Biernesser, A. B., Delle Chiaie, K. R., Curley, J. B., & Byers, J. A.
Affiliations
  • Boston College (US)
  • Department of Chemistry Boston College Eugene F. Merkert Chemistry Center 2609 Beacon Street Chestnut Hill MA 02467 USA
Corresponding author
Byers, Jeffery A.
Venue
Angewandte Chemie International Edition
Publisher
Wiley
Published
2016-03-17
Volume
55
Issue
17
Pages
5251-5254
ISSN
  • 1433-7851 (ISSN-L)
  • 1521-3773
OpenAlex
W2296815437
Cited by
165
References
15
Citations by year
2026: 3 · 2025: 9 · 2024: 9 · 2023: 8 · 2022: 14 · 2021: 21 · 2020: 18 · 2019: 22 · 2018: 27 · 2017: 23 · 2016: 11
FWCI
11.32
Type
journal article
Language
en
Open access
closed
Locations
  • Angewandte Chemie International Edition (publishedVersion)
  • PubMed (publishedVersion)
Funders
National Science Foundation (1454807)
Topics
  • Physical Sciences › Materials Science › Biomaterials › biodegradable polymer synthesis and properties
  • Physical Sciences › Chemistry › Organic Chemistry › Advanced Polymer Synthesis and Characterization
  • Physical Sciences › Chemistry › Organic Chemistry › Organometallic Complex Synthesis and Catalysis
Keywords
block copolymerization, lactide, epoxide polymerization, cyclohexene oxide, iron catalysts, iron(III) complexes, iron(II) complexes, cationic polymerization, catalyst oxidation state, selective polymerization, conducting polymers

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