Researchers at Tokyo University of Science have unveiled two groundbreaking methods for producing coordination nanosheets in liquid form, revolutionizing the manufacturing landscape in electronics, energy, and chemical sensing. Coordination nanosheets, thin layers created by combining metal ions with organic molecules, offer unique properties such as electrical conductivity, chemical interaction, and stability. The single-phase synthesis developed by Professor Hiroshi Nishihara's team allows for the production of porous or non-porous nanosheets in solution, streamlining the process. These nanosheets, akin to ink, show promise in various applications, including printed electronics, batteries, and hydrogen production catalysis. Another innovative approach, transmetallation, enables the introduction of different metals into the nanosheets post-synthesis, enhancing their properties significantly. The creation of heterometallic nanosheets like NiCu₂BHT and NiZn₂BHT combines diverse metal properties, offering improved conductivity and functionality. Such advancements hold potential in flexible sensors, printable electronics, and hydrogen production catalysts. The breakthrough also allows for mass production using printing technologies, marking a significant step towards the practical utilization of these nanosheets in next-generation electronic devices and energy applications.