Hyperbranched macromolecules via a novel double-stage convergent growth approach
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Spherical dendritic macromolecules have received considerable attention as a new class of polymers. We have demonstrated a novel 'double-convergent' growth approach which consists of two parts. Part I involves the preparation of essentially monodisperse dendritic macromolecules with a large number of functional groups evenly distributed at the periphery, via the convergent growth approach using a suitably protected monomer. After removal of the protecting groups, these dendritic molecules may be used as cores ('hypercores') for further dendritic growth. Part II involves coupling of the pre-formed dendritic fragments to the highly functionalized macromolecules ('hypercores') of part I. This 'double-convergent' growth approach allows for the preparation of larger dendrimers in less time and with greater ease than the conventional convergent or divergent growth approaches, while retaining the advantages of the former approach.
author list (cited authors)
Wooley, K. I., Hawker, C. J., & Frechet, J.
complete list of authors
Wooley, KI||Hawker, CJ||Frechet, JMJ