Two is better than one: Repetitive ABA sequences in copolymers were obtained by a palladium-templated monomer. Crucial in the polymerization were π–π-stacking interactions between aromatic side groups to array three vinyl groups (see picture). Because of the interactions double cyclopolymerization at the palladium-templated monomer was possible. Removal of the template led to sequence-regulated copolymers.
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