Synthesis of sequence-defined acrylate oligomers via photo-induced copper-mediated radical monomer insertions

Joke Vandenbergh, Gunter Reekmans, Peter Adriaensens, Thomas Junkers

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Photo-induced copper-mediated radical polymerization is used to synthesize monodisperse sequence defined acrylate oligomers via consecutive single unit monomer insertion reactions and intermediate purification of the compounds by column chromatography or preparative recycling size exclusion chromatography. Monomer conversions are followed during reaction by means of infrared spectroscopy. When reaction conditions are chosen carefully and any residues from chlorinated solvents are avoided, 100% pure Br end capped sequence defined oligomers are obtained, demonstrating the convenience and power of photo-induced copper mediated radical insertion for establishing sequence control. Within this work, a library of sequence defined oligomers containing polar and apolar ester groups have been obtained, and for the first time, perfectly monodisperse acrylate pentamers became accessible from radical insertion reactions.

Original languageEnglish
Pages (from-to)5753-5761
Number of pages9
JournalChemical Science
Issue number10
Publication statusPublished - 29 Jun 2015
Externally publishedYes

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