Acridine-Functionalized Covalent Organic Frameworks (COFs) as Photocatalysts for Metallaphotocatalytic C-N Cross-Coupling.

[53] The signal intensities increased upon irradiation with light, since more electrons are excited from the valence band to the conduction band, indicating the formation of electron hole pairs in the COF semiconductors (Figure 3 c).[ 36 , 54 ] A clear trend in signal intensity can be found for the COF materials.

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