article describes our recent works on the living coordination polymerization of allene derivatives by allylnickel catalysts. The polymerization of alkoxyallenes by allylnickel catalysts proceeds via a living process to give polymers with predictable molecular weights and narrow molecular weight distributions in excellent yields. The polymerization was carried out with allylnickel complexes bearing various ligands to figure out the clear effect on the polymer structures and the polymerization

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... avior. Similarly , allene derivatives bearing various substituents such as phenylallene, alkylallenes , allenylsulfide , allenylpyrrolidone, allenyloxazolidone , esters of allenic acid , and macromonomers bearing allenyloxy end groups undertake the living polymerization . Macromolecular designs based on the living polymerization of allene derivatives (e.g., block copolymerizations) are also described .