Widely used as a pigment in coatings, inks, and plastics due to its intense blue-green color and excellent stability to heat, light, and chemicals. Commonly found in automotive paints and industrial coatings where durability is critical. Acts as a catalyst in organic synthesis and electrochemical reactions, particularly in the reduction of small molecules like oxygen in fuel cells. Employed in photodynamic therapy and as a photosensitizer in photovoltaic devices because of its strong absorption in the visible and near-infrared regions. Used in gas sensors for detecting reducing gases such as ammonia and nitrogen dioxide owing to its semiconducting properties. Also incorporated into nonlinear optical materials and electronic devices like organic field-effect transistors (OFETs) and photoreceptors in laser printers.