Tremendous developments on controlled/living polymerization techniques have been achieved over the last couple of decades in polymer chemistry. Herein, we report a synthetic route towards various multiply-controlled macrocyclic polymers via stereospecific and living polymerizations in conjunction with ‘click’ chemistry. For example, a linear alpha,omega-heterotelechelic syndiotactic poly(methyl methacrylate) (l-st-PMMA) was first prepared via stereospecific living radical or anionic polymerization with an alkyne-bearing initiator followed by the azidation of the omega-terminus. The polymer underwent the macrocyclization through the end-to-end coupling technique via click chemistry to form cyclic st-PMMA. In addition, other cyclic and topological macromolecular structures were examined using various novel controlled/living polymerizations and functionalizations.

Multiply-controlled cyclic polymers prepared by controlled/living and stereospecific polymerizations

255th National Meeting (2018)

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