fig4
Figure 4. (A) Comparison of catalytic performance in the cycloaddition of 1,2-epoxybutane with CO2 across diverse catalytic systems; (B) Exploration of the influence of the mole ratio of the v-BIL to the TPPMg species in POP-TPPMg. Note: The details of the standard reaction conditions are provided in the Experimental section. v-BIL: 3,3’-(ethane-1,2-diyl)bis(1-vinyl-1H-imidazol-3-ium); POP-TPPMg: polymeric Mg metalated, vinyl-functionalized tetraphenylporphyrin monomer.
