fig2
![Molecular engineering toward large pore-sized covalent organic frameworks](https://image.oaes.cc/fb361da7-32a2-4393-ae05-1da30b195551/cs3063.fig.2.jpg)
Figure 2. Skeleton design of PI-COF-3 with imide linkage. (i) Mesitylene/N-methyl-2-pyrrolidone/Isoquinoline = 1/1/1 (v/v/v), 250 °C and 7 days. COF: Covalent organic framework.
Figure 2. Skeleton design of PI-COF-3 with imide linkage. (i) Mesitylene/N-methyl-2-pyrrolidone/Isoquinoline = 1/1/1 (v/v/v), 250 °C and 7 days. COF: Covalent organic framework.
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