We are actively engaging in the research of organic nanomaterials for drug delivery and energy storage & conversion. The nanoparticles composed of hydrophobic molecules can be obtained with less than 100 nm in size, utilizing our original reprecipitation method. We are aiming at the practical applications of these nanodrugs for the treatment of cancer and ocular diseases. In addition, we are developing these organic nanoparticles into electrode-active materials, gas absorbents, and electro/photocatalysts.