期刊
MACROMOLECULES
卷 48, 期 13, 页码 4329-4338出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.macromol.5b01175
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资金
- EPSRC [EP/M000842/1]
- Marie Curie Career Integration Grant
- University of Edinburgh
- Fonds der Chemischen Industrie
- DFG [CHE 10-26060]
- State of Lower Saxony
- EPSRC [EP/M000842/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/M000842/1] Funding Source: researchfish
The mechanism of reversible-deactivation radical polymerization (RDRP) mediated by chloro-substituted amine-bis(phenolate)iron complexes was studied via a combination of Mossbauer, EPR, NMR, and online Vis/NIR spectroscopy. It was found that styrene polymerization operates via an atom-transfer radical polymerization (ATRP) mechanism when alkyl halide is present, whereas an interplay between ATRP and organometallic-mediated radical polymerization (OMRP) equilibria occurs during MMA polymerization. The preparation of the amine-bis(phenolate)iron(11) complex, [O2NN']Fe-II, allowed polymerizations to be performed under an OMRP-only regime free of alkyl halide that yields dispersities as low as 1.29 for MMA polymerization.
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