A luminescent zinc coordination complex cocrystallized with benzenetetracarboxylic acid showing photoinduced coloration from grey to orange

Tailoring photoinduced color of a donor-acceptor molecular system is achieved by introducing the macrocycle electron-deficient ligand into the structure of a zinc phosphate binuclear unit. Fluorescence quenching occurs accompanying with the light irradiation process due to energy transfer between the photoactive components.169