Concurrent control over sequence and dispersity in multiblock copolymers

Maria Nefeli Antonopoulou, Richard Whitfield, Nghia P. Truong, Dries Wyers, Simon Harrisson, Tanja Junkers, Athina Anastasaki

Research output: Contribution to journalArticleResearchpeer-review

3 Citations (Scopus)

Abstract

Controlling monomer sequence and dispersity in synthetic macromolecules is a major goal in polymer science as both parameters determine materials’ properties and functions. However, synthetic approaches that can simultaneously control both sequence and dispersity remain experimentally unattainable. Here we report a simple, one pot and rapid synthesis of sequence-controlled multiblocks with on-demand control over dispersity while maintaining a high livingness, and good agreement between theoretical and experimental molecular weights and quantitative yields. Key to our approach is the regulation in the activity of the chain transfer agent during a controlled radical polymerization that enables the preparation of multiblocks with gradually ascending (Ɖ = 1.16 → 1.60), descending (Ɖ = 1.66 → 1.22), alternating low and high dispersity values (Ɖ = 1.17 → 1.61 → 1.24 → 1.70 → 1.26) or any combination thereof. We further demonstrate the potential of our methodology through the synthesis of highly ordered pentablock, octablock and decablock copolymers, which yield multiblocks with concurrent control over both sequence and dispersity. 

Original languageEnglish
Pages (from-to)304–312
Number of pages10
JournalNature Chemistry
Volume14
Issue number3
DOIs
Publication statusPublished - Mar 2022

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