INOR 351 |
| Atom transfer radical polymerization (ATRP) has emerged as an important method for synthesizing living polymers with controlled molecular weights and narrow polydispersities. While many neutral metal complexes are ATRP catalysts, few cationic ATRP catalysts are known. Here we report the activity of complexes with the formula [Cp*Ru(TMEDA)(CH3CN)]+[PF6]- (TMEDA = tetramethylethylenediamine) in the ATRP of methyl methacrylate (MMA) at room temperature. Although polymerization kinetics are well behaved at low conversion, catalyst sequestration by polymer is evident past 50% conversion. Higher conversions are attainable at elevated temperature with some sacrifice of control. |
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Radical Metal Complex Chemistry
7:00 PM-10:00 PM, Sunday, 10 September 2006 Moscone Center -- Hall D, Poster
Division of Inorganic Chemistry |