One-Pot Synthesis of Ion-Containing CO2-Based Polycarbonates Using Protic Ionic Liquids as Chain Transfer Agents

• DOI: 10.1021/acs.macromol.8b01834
• Publication Date: 2018-11-07T15:24:42Z
• Authors: Zhaohe Huang; Yanyan Wang; Na Zhang; Luhong Zhang; Donald J. Darensb...
• Keywords: Protic solvent; Propylene oxide; Onium; Polycarbonate; Chain transfer

An analysis of the construction ion-containing CO2-based polycarbonates via metal-catalyzed immortal copolymerization propylene oxide (PO) and carbon dioxide in presence protic ionic liquids (ILs) as chain transfer agents is described. The reactions were catalyzed by binary (salen)CoO2CCF3/onium salt system absence added solvent. On basis results this study, which includes 1H NMR MALDI-TOF-MS data, it clear that role IL process dominated its anion. When anion liquid nucleophilic, such chloride, acts a cocatalyst reaction for epoxide ring opening, initiated cation completely suppressed. However, when non-nucleophilic, BF4–, an effective agent to afford IL-based rapid reversible processes. resultant polymer structures confirmed spectroscopies. This work provides facile method synthesizing polycarbonate well insight into processes utilizing agents.