Abstract
The reactivity of three nitrogen-containing olefins with a cationic (alpha-diimine)Pd-Me species was studied to evaluate possibilities for their catalytic copolymerization with ethylene. Allyl dimethyl amine gives 1,2-insertion into the Pd-Me bond, but the resulting five-membered chelate is inert toward ethylene. Olefins bearing carbazole substituents insert to form three-membered chelate complexes after a chain-walking process. These chelates are reactive toward ethylene, and N-pentenylcarbazole was successfully copolymerized with ethylene to yield branched polyethylene copolymers bearing carbazole functionalities. The fluorescence of these copolymers is dependent on the amount of incorporated comonomer.
Original language | English |
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Pages (from-to) | 2052-2057 |
Number of pages | 6 |
Journal | Organometallics |
Volume | 27 |
Issue number | 9 |
DOIs | |
Publication status | Published - 12-May-2008 |
Keywords
- TRANSITION-METAL-COMPLEXES
- CATALYZED COPOLYMERIZATION
- ETHYLENE
- POLYMERIZATION
- MONOMERS
- REAGENT