A one-pot approach towards polycarbonate-b-polyester block copolymers via chemoselective polymerization catalyzed by a one-component phosphonium borane Lewis pair
ABA BLOCK;
ONE-STEP;
EPOXIDES;
ANHYDRIDE;
MIXTURES;
LACTIDE;
ROUTE;
CO2;
D O I:
10.1039/d4py00329b
中图分类号:
O63 [高分子化学(高聚物)];
学科分类号:
070305 ;
080501 ;
081704 ;
摘要:
Chemoselective polymerization from mixtures of monomers to control the polymer sequence is a challenging task. In this contribution, we describe a unique chemoselective polymerization affording predictable (co)polymer compositions from a mixture of monomers. The use of a one-component phosphonium borane Lewis pair and a mixture of l-lactide (l-LA), cyclohexene oxide (CHO) and CO2 enables the selective synthesis of either a polyester, polycarbonate or poly(carbonate-b-ester). The selectivity depends on the nature of the borane-oxygen functionality at the growing polymer chain end, and can be controlled by the addition of CO2 as an exogeneous switch reagent.
机构:
Univ Paris 05, Chim Therapeut Lab, CNRS, Fac Sci Pharmaceut & Biol,UMR 8638, F-75270 Paris 06, FranceUniv Paris 05, Chim Therapeut Lab, CNRS, Fac Sci Pharmaceut & Biol,UMR 8638, F-75270 Paris 06, France
Aknin, Karen
Desbene-Finck, Stephanie
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机构:
Univ Paris 05, Chim Therapeut Lab, CNRS, Fac Sci Pharmaceut & Biol,UMR 8638, F-75270 Paris 06, FranceUniv Paris 05, Chim Therapeut Lab, CNRS, Fac Sci Pharmaceut & Biol,UMR 8638, F-75270 Paris 06, France
Desbene-Finck, Stephanie
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机构:
Helissey, Philippe
Giorgi-Renault, Sylviane
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机构:
Univ Paris 05, Chim Therapeut Lab, CNRS, Fac Sci Pharmaceut & Biol,UMR 8638, F-75270 Paris 06, FranceUniv Paris 05, Chim Therapeut Lab, CNRS, Fac Sci Pharmaceut & Biol,UMR 8638, F-75270 Paris 06, France