Using Diels–Alders
(DA) chemistry as a dynamic-covalent
linkage, we explored the kinetic growth mechanism of polymer structures
including starlike materials and nanogels. The use of reversible addition–fragmentation
chain transfer (RAFT) polymerization allows for precise control of
DA linkages within the polymer backbone. Controlling the competition
between intra- and intermolecular cross-linking reactions allows for
the preparation of polymer structures that can expand their volume
after cleavage of the DA linkages as determined by dynamic light scattering
(DLS). Macroscopically, this would be analogous to untying a rope
ball knot, commonly termed a “monkey’s fist”.
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