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Ligand and solvent effects on the catalytic activity and lifetime of zwitterionic Nickel(II) catalysts for alternating CO-Ethylene copolymerization

https://doi.org/10.1016/j.jorganchem.2021.122045

Zhu, Linhui; Dai, Yiwei; Schrage, Briana R.; Ziegler, Christopher J.; Jia, Li (November 2021, Journal of Organometallic Chemistry)

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Zwitterionic Iron(II) Compounds: Synthesis, Reactivity, and Catalytic Carbonylative Polymerization of Cyclic Ethers

https://doi.org/10.1021/acs.organomet.1c00463

Dai, Yiwei; Lyu, Jingqing; Zhu, Linhui; Schrage, Briana R.; Ziegler, Christopher J.; Jia, Li (October 2021, Organometallics)

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Dual-site catalysis for sustainable polymers to replace current commodity polymers – carbonylative copolymerization of ethylene, ethylene oxide, and tetrahydrofuran

https://doi.org/10.1039/d0cc05657j

Dai, Yiwei; Luo, Jiancheng; Liu, Tianbo; Jia, Li (December 2020, Chemical Communications)
null (Ed.)
Zwitterionic Ni( ii )-catalyzed carbonylative copolymerization of ethylene and cyclic ethers for the synthesis of photolytically and hydrolytically degradable polymers is reported. The segmented tetrapolymer products are composed of polyketone segments from alternating enchainments of CO and ethylene and poly(ether- co -ester) segments from non-alternating enchainments of CO, ethylene oxide, and tetrahydrofuran. Plastic and elastic products can be obtained via the general synthetic platform with the appropriate choice of catalyst and polymerization conditions.
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