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Molar Mass Dispersity Control by Iodine-mediated Reversible-deactivation Radical polymerization

Chinese Journal of Polymer Science 2021年第9期39卷 1155-1160页

作者： Jin-Ying Wang Yuan-Yuan Ni Jian-Nan Cheng Li-Fen Zhang Zhen-Ping Cheng State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials Suzhou Key Laboratory of Macromolecular Design and Precision SynthesisCollege of Chemistry Chemical Engineering and Materials Science Soochow University

Dispersity(?) of polymers has a great effect on the properties of polymeric materials, and therefore how to control ? is very important but still a huge challenge in polymer synthesis, especially for reversible-deactivation radical polymerization(RDRP) strategy. Herein, we successfully developed a novel strategy to adjust ? of polymers by visible light-controlled reversible complexation mediated living radical polymerization(RCMP) and combination of single-electron transfer-degenerative chain transfer living radical polymerization(SET-DTLRP) at room temperature. In RCMP system, 2-iodo-2-methylpropionitrile(CP-I) and ethyl 2-iodo-2-phenylacetate(EIPA) were used as alkyl iodide initiators, by using methyl methacrylate(MMA) as the model monomer and n-butylacrylate(BA) as the end-capping reagent to regulate ? of polymers. Subsequently, we successfully prepared the block copolymer PMMA-b-PBA with adjustable ? by reactivating the polymer end-chains via SET-DTLRP in the presence of copper wire, fully demonstrating that it is a promising strategy that can keep the "living" feature of polymers while regulating their molar mass dispersities easily.

关键词： Dispersity control Iodine-mediated reversible-deactivation radical polymerization (RDRP) visible light-controlled polymerization Reversible complexation mediated living radical polymerization (RCMP) Single-electron transfer-degenerative chain transfer living radical polymerization (SET-DTLRP)

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Molar Mass Dispersity Control by lodine-mediated Reversibledeactivation Radical polymerization

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Chinese Journal of Polymer Science 2021年第9期39卷 1155-1160页

作者： Jin-Ying Wang Yuan-Yuan Ni Jian-Nan Cheng Li-Fen Zhang Zhen-Ping Cheng State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials Suzhou Key Laboratory of Macromolecular Design and Precision SynthesisCollege of ChemistryChemical Engineering and Materials ScienceSoochow UniversitySuzhou 215123China

Dispersity(D)of polymers has a great effect on the properties of polymeric materials,and therefore how to control θ is very important but still a huge challenge in polymer synthesis,especially for reversible-deactivation radical polymerization(RDRP)***,we successfully developed a novel strategy to adjust D of polymers by visible light-controlled reversible complexation mediated living radical polymerizatio n(RCMP)and combi nation of single-electron transfer-degenerative chain tran sfer living radical polymerization(SET-DTLRP)at room *** RCMP system,2-iodo-2-methylpropionitrile(CP-I)and ethyl 2-iodo-2-phenylacetate(EIPA)were used as alkyl iodide initiators,by using methyl methacrylate(MMA)as the model monomer and n-butylacrylate(BA)as the end-capping reagent to regulate D of ***,we successfully prepared the block copolymer PMMA-b-PBA with adjustable D by reactivating the polymer end-chains via SET-DTLRP in the presence of copper wire,fully dem on strati ng that it is a promising strategy that can keep the"living"feature of polymers while regulating their molar mass dispersities easily.

关键词： Dispersity control lodine-mediated reversible-deactivation radical polymerization(RDRP) visible light-controlled polymerization Reversible complexation mediated living radical polymerization(RCMP) Single-electron transfer-degenerative chain transfer living radical polymerization(SET-DTLRP)

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