Terpolymerizations of CO₂, propylene oxide (PO), and 4-vinyl cyclohexene oxide (VCHO) were successfully catalyzed by a single cobalt(III) complex of a salen-type ligand bearing one quaternary ammonium salt on the five-position of each aromatic ring. The influences of various reaction conditions such as molar ratio of the monomers, reaction time and reaction temperature on the terpolymerization progress were investigated. The resulting terpolymers showed only one thermolysis peak and one adjustable glass-transition temperature (T_g) dependable on vinyl cyclohexene carbonate (VCHC) unit content with the relationship of “T_g (°C) = 64 × F_Vinyl + 39”. Furthermore, the epoxy group was incorporated by oxidation of vinyl group of PVCHC units and the cyclic carbonate (CC) functional group was achieved by reaction of CO₂ with epoxy-functionalized terpolymer. The linear dependencies of the T_g on the mole fractions ratio of pendent epoxy and CC groups on the poly(cyclohexene carbonate) main chain were also observed. Notably, the T_g of fully CC-functionalized PCHC was up to 196 °C, which was the highest T_g of CO₂-based polycarbonate reported at the absence of cross-linked structure.

通过在每个芳族化合物的5位上带有一个季铵盐的salen型配体的单一钴（III）配合物，成功催化了CO ₂，环氧丙烷（PO）和4-乙烯基环己烯氧化物（VCHO）的三元聚合反应。戒指。研究了单体的摩尔比，反应时间和反应温度等各种反应条件对三元聚合反应进度的影响。所得三元共聚物仅显示一个热分解峰和一个可调节的玻璃化转变温度（T _g），该温度取决于碳酸乙烯基环己烯酯（VCHC）单元的含量，关系为“ T _g（°C）= 64×  F_乙烯基 + 39英寸。此外，通过PVCHCHC单元的乙烯基的氧化引入环氧基，并且通过CO ₂与环氧官能化的三元共聚物的反应获得环状碳酸酯（CC）官能团。还观察到T _g对聚（碳酸环己烯）主链上侧链环氧基和CC基团的摩尔分数比的线性依赖性。值得注意的是，完全CC官能化的PCHC的T _g高达196°C，这是在没有交联结构的情况下报告的基于CO ₂的聚碳酸酯的最高T _g。