A photo‐stimulated Copper‐Based Metal‐Organic Framework as photoelectric material

Photo‐stimulated Polymers have garnered significant attention for their potential applications ranging from optical memory to sensing. Herein, by changing coordination metal and the position of nitrogen atom in pyridine‐based photo‐stimulated ligand, we successfully synthesised a novel photo‐stimulated copper‐based MOF (Cu‐MOF) using 9,10‐bis(di(pyridine‐3‐yl)methylene)‐9,10‐dihydroanthracene as the photo‐stimulated ligand. Structural analysis revealed a 3D porous architecture, offering a distinct advantage over previously reported 1D coordination polymer using similar photo‐stimulated ligand. The Cu‐MOF exhibited exceptional photoelectric properties, demonstrating potential as an anode material for lithium‐ion batteries and a luminescent MnO₄⁻ sensor. Its electrochemical performance revealed high reversibility, with discharge capacities retaining stability under varying current densities. Additionally, the Cu‐MOF displayed notable photo‐stimulated behavior under UV light irradiation, enhancing its optical properties. Although the structure changes from 1D coordination polymer to 3D MOF， the photocyclized form (c‐Cu MOF) still exhibited superior fluorescence quenching efficiency and sensitivity for MnO₄⁻ detection with Ksv (quenching constant) 5.24 x 105 M‐1. This work highlights the utility of Cu‐MOF as a multifunctional material for energy storage and environmental sensing applications.