181708-20-3Relevant academic research and scientific papers
Mechanistic studies of Pd(II)-α-diimine-catalyzed olefin polymerizations
Tempel, Daniel J.,Johnson, Lynda K.,Huff, R. Leigh,White, Peter S.,Brookhart, Maurice
, p. 6686 - 6700 (2000)
Mechanistic studies of olefin polymerizations catalyzed by aryl-substituted α-diimine-Pd(II) complexes are presented. Syntheses of several cationic catalyst precursors, [(N^N)Pd(CH3)(OEt2)]BAr′4 (N^N
Designing and refining Ni(II)diimine catalysts toward the controlled synthesis of electron-deficient conjugated polymers
Bridges, Colin R.,McCormick, Theresa M.,Gibson, Gregory L.,Hollinger, Jon,Seferos, Dwight S.
, p. 13212 - 13219 (2013/09/24)
Electron-deficient π-conjugated polymers are important for organic electronics, yet the ability to polymerize electron-deficient monomers in a controlled manner is challenging. Here we show that Ni(II)diimine catalysts are well suited for the controlled polymerization of electron-deficient heterocycles. The relative stability of the calculated catalyst-monomer (or catalyst-chain end) complex directly influences the polymerization. When the complex is predicted to be most stable (139.2 kJ/mol), these catalysts display rapid reaction kinetics, leading to relatively low polydispersities (～1.5), chain lengths that are controlled by monomer:catalyst ratio, controlled monomer consumption up to 60% conversion, linear chain length growth up to 40% conversion, and 'living' chain ends that can be readily extended by adding more monomer. These are desirable features that highlight the importance of catalyst design for the synthesis of new conjugated polymers.
