Template-assisted selective radical addition toward sequence-regulated polymerization: lariat capture of target monomer by template initiator |
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Authors: | Ida Shohei Ouchi Makoto Sawamoto Mitsuo |
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Affiliation: | Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan. |
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Abstract: | Surprisingly high monomer selectivity was demonstrated in competitive radical addition with two kinds of methacrylates carrying sodium and ammonium cation. Crucial is size-specific recognition by a lariat crown ether embedded close to the reactive halide in a designer template initiator. Especially, a combination with an active ruthenium catalyst led to outstanding selectivity at low temperature. This template system will open the way to unprecedented sequence-regulated polymerization. |
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