Adamantylimino-containing Polymers via Living Anionic Polymerization: Precise Synthesis, Thermal Properties, and Postpolymerization Modification
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초록
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The anionic polymerization of 4-(4-(N-adamantylimino)methyl)phenylstyrene (B) was performed using various initiators in THF at -78 oC to investigate the effects of adamantyl groups on the polymerization behaviors and thermal properties of the resulting polymers. The well-defined poly(B) with predictable molecular weight and narrow molecular weight distribution was successfully synthesized, indicating that the adamantyl group protected the carbon-nitrogen double bond (C=N) from the nucleophilic attack of anionic species. The resulting poly(B) showed high thermal stability and high glass transition temperature (Tg). The block copolymerization with 2-vinylpyridine (2VP), which is one of the high reactive monomers, was performed to confirm the degree of reactivity of B and to synthesize the well-defined block copolymers containing a poly(B) segment. The acidic hydrolysis of the N-adamantylimino groups of poly(B) and poly(2VP-b-B) was carried out to prepare aldehyde-containing polymers.