Living Anionic Copolymerization of 1-(Alkylsulfonyl)aziridines to Form Poly(sulfonylaziridine) and Linear Poly(ethylenimine)

作者：Reisman Louis; Mbarushimana Canisius P; Cassidy S Joel; Rupar Paul A^*

来源：ACS Macro Letters, 2016, 5(10): 1137-1140.

DOI：10.1021/acsmacrolett.6b00538

The anionic ring-opening copolymerization of 1-(methylsulfonyl)aziridine (MsAz) and 1-(sec-butylsulfonyl)aziridine ((s)BsAz) produces a soluble random copolymer P(MsAz-r-(s)BsAz), which can subsequently be converted to linear poly(ethylenimine) (lPEI). The copolymerization of MsAz and (s)BsAz is living and allows for the synthesis of copolymers with low molecular weight distributions. Sequential anionic polymerization of MsAz and (s)BsAz with 2-methyl-1-(methylsulfonyl)aziridine (MsMAz) creates P(MsAz-r-sBsAz)-b-P(MeMsAz). Removal of the sulfonyl groups from P(MsAz-r-(s)BsAz)-b-P(MsMAz) gives lPEI-b-poly(propylenirnine). For the first time, lPEI can be synthesized by a controlled anionic polymerization.

• 出版日期2016-10