Journal of the American Chemical Society

Cyclic poly (α-peptoid) s and their block copolymers from N-heterocyclic carbene-mediated ring-opening polymerizations of N-substituted N-carboxylanhydrides

L Guo, D Zhang

Index: Li, Guo; Donghui, Zhang Journal of the American Chemical Society, 2009 , vol. 131, # 50 p. 18072 - 18074

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Citation Number: 130

Abstract

N-Heterocyclic carbene (NHC)-mediated ring-opening polymerization (ROP) of N- substituted N-carboxylanhydride (N R-NCA) yields cyclic poly (α-peptoid) s with controlled molecular weights (M n= 3− 30 kg mol− 1) and narrow molecular weight distributions (PDI= 1.04− 1.12). The reactions exhibit characteristics of a living polymerization with minimal chain transfer. This enables the facile synthesis of cyclic diblock copoly (α-peptoid) s ...