Living polymerization has allowed control of molecular weight (chain length) and terminal groups for synthetic polymers. On the other hand, as found in DNA and peptides, sequence of functional groups or chain topology seems to be rather essential structural factor for functions of the macromolecules in nature. We have been interested in control of sequence1-5 and topology6for vinyl polymers with a belief that the control will lead to a new family of carbon-chain with the specific functions. Crucial to realize the control is the advanced �bond design� on living polymerization where initiation (generation of active species) and propagation are basically controlled. This work deals with molecular design of initiator and monomers with such specialized bonds (e.g., cleavable, renewable, reversibly activated, etc.) and control of sequence and topology for novel well-defined copolymers. Figure 1. <img src='https://acs-archive-assets2.s3.amazonaws.com/241nm/uploads/72516_dipyr_amides2.jpg' alt='' /> (1) J. Am. Chem. Soc. 2009 , 131, 10808. (2) J. Am. Chem. Soc. 2010 , 132, 14748. (3) Macromol. Rapid Comm. 2011 , 32, 209. (4) Angew. Chem. Int. Edit. 2011 , 50, 7434. (5) Polym. Chem. 2011 , 2, 341. (6) ACS Macro Lett. 2013 , 2, 531.

Novel well-defined vinyl copolymers: Control of sequence and topology by advanced bond design

248th National Meeting (2014)

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