Anionic iron(II) alkoxides as initiators for the controlled ring‐opening polymerization of lactide
Open accessAbstract
Hetero‐bimetallic Fe(II) alkoxide/aryloxides were evaluated as initiators for the ring‐opening polymerization of rac‐lactide. [(THF)NaFe(OtBu)3]2 (1) and [(THF)4 Na 2 Fe(2,6‐diisopropylphenolate)4] (2) (THF = tetrahydrofuran) both polymerized lactide efficiently at room temperature, with complex 1 affording better control over the molecular weight parameters of the resultant polymer. At conversions below 70%, a linear increase in molecular weight with conversion was observed, indicative of a well‐controlled polymerization process. Complex 2 is the first example of a dianionic Fe(II) alkoxide and has been structurally characterized to reveal a distorted square planar FeO 4 array in which both Na counterions bridge two aryloxide ligands and are further complexed by two THF ligands. © 2003 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 41: 3798–3803, 2003
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Comparatively little research has been directed at using inexpensive iron catalysts for effective ROP reactions.
“Still, comparatively little research has been directed at using inexpensive iron catalysts for effective ROP reactions.”
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References 19 · Cited by 96
- Authors
- McGuinness, D. S., Marshall, E. L., Gibson, V. C., & Steed, J. W.
- Affiliations
- Imperial College London (GB)
- University of London (GB)
- Corresponding author
- Gibson, Vernon C.
- ORCID
- Steed, Jonathan W.
- Venue
- Journal of Polymer Science Part A: Polymer Chemistry
- Publisher
- Wiley
- Published
- 2003-10-17
- Volume
- 41
- Issue
- 23
- Pages
- 3798-3803
- ISSN
- 0887-624X (ISSN-L)
- 1099-0518
- OpenAlex
- W2121752895
- Cited by
- 96
- References
- 19
- Citations by year
- 2026: 1 · 2025: 1 · 2024: 1 · 2023: 2 · 2022: 2 · 2021: 1 · 2020: 1 · 2019: 6 · 2018: 7 · 2017: 7 · 2016: 6 · 2015: 11 · 2014: 8 · 2013: 6 · 2012: 7
- FWCI
- 1.83
- Type
- journal article
- Language
- en
- Open access
- green
- figshare.com
- Locations
- Journal of Polymer Science Part A Polymer Chemistry (publishedVersion)
- eCite Digital Repository (University of Tasmania) (submittedVersion)
- Figshare (submittedVersion, cc-by)
- Funders
- The Ramsay Memorial Fellowships Trust
- 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
- ring-opening polymerization, lactide, controlled radical polymerization, initiators, heterobimetallic complexes, molecular weight control, polylactic acid, aryloxide ligands
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