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Imidodiphosphorimidate (IDPi) as an efficient organocatalyst for controlled/living ring-opening polymerization of lactones

2019; Elsevier BV; Volume: 123; Linguagem: Inglês

10.1016/j.eurpolymj.2019.109449

1873-1945

Xun Zhang, Yu Jiang, Ma Qiang, Siping Hu, Qinggang Wang, Saihu Liao,

Organometallic Complex Synthesis and Catalysis

Imidodiphosphorimidate (IDPi) is demonsatreted as a novel and efficient acid/base bifunctional organocatalyst for controlled/living ring-opening polymerization of lactones, which delivered the metal-free poly(δ-valerolactone) and poly(ε-caprolactone) with excellent control over the molecular weight and narrow dispersity at a low catalyst loading under mild conditions. NMR and MALDI-TOF characterizations, kinetic study, and chain extension experiment suggest a well-controlled/living nature of the current ROP of lactones catalyzed by the IDPi catalyst.