Cuboid Cu(HBTC)(H2O)3 synthesis via plasma pretreatment of trimesic acid solution

Metal–organic frameworks (MOFs) have attracted considerable research attention in recent years, with the focus being on controlling their morphology for various applications. Cu(HBTC)(H2O)3, a one‐dimensional MOF, is constructed with a copper(II) ion and 1,3,5‐benzenetricarboxylic acid (H3BTC, trimesic acid). A two‐dimensional structure can be achieved by adding ethanol and polyvinylpyrrolidone during synthesis. In this study, its three‐dimensional cuboid Cu(HBTC)(H2O) structure was synthesized by plasma pretreatment of an H3BTC solution. Cuboid Cu(HBTC)(H2O)3 was synthesized by partial plasma treatment of raw materials. Plasma was generated in an aqueous trimesic acid (H3BTC) solution, and copper nitrate trihydrate was added to the plasma‐treated solution to synthesize the cuboid Cu(HBTC)(H2O)3. The analysis of the plasma‐treated solution itself was also performed. These results demonstrate that the partial plasma treatment of raw materials is a useful method for the synthesis of complexes.