Hyperbranched polymers with a degree of branching of 100% were prepared by catalyst transfer Suzuki-Miyaura polymerization of AB(2) monomers carrying one boronic acid and two aromatic bromo functional groups; in contrast, Suzuki-Miyaura polymerization of the same AB(2) monomers using a traditional catalyst afforded hyperbranched polymers with a branching degree of only approximately 56%. This is a nice example of controlling the topology of hyperbranched polymers via the catalyst.
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Huang et al. (2009) studied this question.
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