fig2

Figure 2. Topological structure and building blocks of stacked 2D COFs of the Lieb lattice with the nodes highlighted in blue and edges in orange. 2D: Two dimensional; COFs: covalent organic frameworks.
Figure 2. Topological structure and building blocks of stacked 2D COFs of the Lieb lattice with the nodes highlighted in blue and edges in orange. 2D: Two dimensional; COFs: covalent organic frameworks.
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