Block Copolymers Containing Polyacetylene Segments

Hirao and coworkers applied this living system to prepare either covalently bonded or ion-bonded BCPs and miktoarm star polymers containing PA rod segments (Hirao et al., 2004 Zhao et al., 2005 Sugiyama et al., 2006 Zhao et al, 2007). In a typical experiment, 

5- arm ABCDE stars could be successfully synthesized. As coil blocks, polystyrene derivatives such as PS, PaMS, poly(4-methoxystyrene) (PMOS), poly(4-trimethylsilylstyrene) (PMSiS), and poly(4-methylstyrene) (PMS) were employed. Finally, the resulting polymers were thermally treated to quantitatively convert them to new stars consisting of one conductive 

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