Anionic Homopolymerization of Ferrocenylmethyl Methacrylate.
ALABAMA UNIV UNIVERSITY DEPT OF CHEMISTRY
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Anionic polymerization of ferrocenylmethyl methacrylate FMMA was investigated using high vacuum techniques. Initiators used included n-butyl lithium, sodium napthalide, potassium napthalide, Grignard reagents both C2H5MgBr and C6H5MgBr, sodium methoxide, and lithium aluminum hydride. FMMA polymerization was readily initiated by each of the above initiators with the exception of sodium methoxide. The molecular weight of polyferrocenylmethyl methacrylate could be controlled by varying the monomer to initiator ratio when lithium aluminum hydride was used in tetrahydrofuran THF. In this system, polyferrocenylmethyl methacrylate, was prepared with Mn as high as 277,000 with a relatively narrow molecular weight distribution compared to samples prepared by radical initiated polymerization. The Mark-Houwink values of K and a were determined in THF. It is clear that the polymer is moderately coiled in THF.
- Organic Chemistry