(a) Schematic of the MOF and organic linkers (left) and band edge positions of the MOFs with various linkers (right). Reprinted from [38] with permission. Copyright© 2014, American Chemical Society. (b) Simulated structures (left) and the corresponding band structures (right) of DSNDI-based MOF-74. Upon TTF intercalation, the bandgap of the MOF drops from 2.5 to 1.5 eV. Reprinted from [39] with permission. Copyright© 2017, American Chemical Society. (c) Bandgaps and band edge positions, as calculated with the screened hybrid functional HSE06 for (left) porphyrin-based MOF with only one element (A = Al or Fe) at the octahedral sites, and (right) mixed perovskite-MOF (P-MOF) with 50% Al and 50% Fe at the octahedral sites. Reprinted from [40] with permission. Copyright© 2017, Royal Society of Chemistry.