In this experiment, the standard synthesis process for the (Cu6dpb) complex was followed. However, due to solubility issues with the dpp linker, it was dissolved in N-methyl-2-pyrrolidone (NMP) and gradually added to the reaction mixture. After two days, rice grain-shaped orange crystals were obtained (yield: 31.3% on the basis of Cu). The crystal morphology and chemical composition were confirmed through optical microscopy and SEM imaging combined with EDS analysis (Fig. and Fig. ).