fig4
![Post-modified porous aromatic frameworks for carbon dioxide capture](https://image.oaes.cc/ebd3cdf1-76b5-4921-9c8f-2ce51e5ce9a1/cs4028.fig.4.jpg)
Figure 4. Gas absorption and desorption of PAF-1 and its derivations. (A) N2 uptake at 77 K; (B) CO2 uptake of PAF-1 and its derivations at 273 K; (C) CO2 uptake of PAF-1 and its derivations at 298 K; (D) CO2 Qst of PAF-1 and PAF-1-NH2. PAF-1: Porous aromatic