Polymer chemistry, probably more than any other chemical discipline, relies on highly efficient organic reactions.1 Indeed, typical macromolecular reactions such as polymer growth (i.e., chain- or step-growth), polymer modification (i.e side-chains or chain-ends) and chain-chain coupling (i.e., block copolymer synthesis, bioconjugation) generally require high-yield and highly specific chemical reactions.2 In that context, it comes as no surprise thatmodular reactions of the “click”-type3 have recently been gaining popularity in polymer science. For instance, more than 300 articles, describing the relevance of copper-catalyzed azide/alkyne cycloadditions (CuAAC) in polymer synthesis, have been published within the last five years.4 These archetypal “click” reactions open multiple possibilities in terms of macromolecular engineering.