title: A ligand exchange strategy for one-pot sequential synthesis of (hyperbranched polyethylene)-b-(linear polyketone) block polymers.
abstract: Upon the addition of an equimolar amount of 2,2'-bipyridine, a cationic Pd-diimine complex capable of facilitating "living" ethylene polymerization is switched to catalyze "living" alternating copolymerization of 4-tertbutylstyrene and CO. This unique chemistry is thus employed to synthesize a range of well-defined treelike (hyperbranched polyethylene)-b-(linear polyketone) block polymers.
authors: Bharti School of Engineering, Laurentian University, Sudbury, Ontario P3E 2C6, Canada.
authors: Zhichao
authors: Z
authors: Zhang
authors: Zhibin
authors: Z
authors: Ye
mesh_terms: D002384:Catalysis; D007097:Imines / Q000737:chemistry; D007659:Ketones / Q000737:chemistry*; D008024:Ligands; D015394:Molecular Structure; D009942:Organometallic Compounds / Q000737:chemistry; D010165:Palladium / Q000737:chemistry; D020959:Polyethylene / Q000737:chemistry*
chemical_list: D007097:Imines; D007659:Ketones; D008024:Ligands; D009942:Organometallic Compounds; D010165:Palladium; D020959:Polyethylene