Postpolymerization Modification: A Powerful Tool for the Synthesis and Function Tuning of Stimuli‐Responsive Polymers

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  • Xu Chen
    Department of Materials Science and Engineering Tokyo Institute of Technology 2‐12‐1 Ookayama, Meguro‐ku Tokyo 152‐8552 Japan
  • Tsuyoshi Michinobu
    Department of Materials Science and Engineering Tokyo Institute of Technology 2‐12‐1 Ookayama, Meguro‐ku Tokyo 152‐8552 Japan

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<jats:title>Abstract</jats:title><jats:p>Stimuli‐responsive polymers are a type of functional polymers showing a change in their physicochemical properties in response to external stimuli, such as temperature, pH, and electrochemical potential application, and they can be used in biosensors, biomedicine, and separation technology. Postmodification of polymers plays an important role in designing stimuli‐responsive polymers in terms of their synthesis, tuning of their thermoresponsivity, and functionalization. A variety of topological polymer structures, such as a comb, sphere, and dendrimer, can be produced, and the resultant tuning of the transition temperatures and phase types (lower critical solution temperature‐ or upper critical solution temperature‐type) can be achieved. Furthermore, postmodification techniques are employed as a useful tool to functionalize precursor polymers or improve the responsive properties of the polymers, which expands the applicable fields of these polymers. In this review, click chemistry‐related reactions, the esterification reaction, and surface‐initiated polymerization are the focus as efficient postmodification reactions to produce high‐performance stimuli‐responsive polymers.</jats:p>

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