Phthalocyanine is widely used as a pigment and dye in the manufacturing of inks, coatings, plastics, textiles, and paper due to its intense, stable, and light- and heat-resistant color properties. It is particularly valued in the printing and textile industries for producing high-quality, fade-resistant products. Additionally, it serves as a key component in organic solar cells, enhancing their efficiency by improving light absorption. In the field of electronics, phthalocyanine is utilized in the production of organic field-effect transistors (OFETs), sensors, and semiconductors, owing to its semiconducting and conductive properties. It also finds applications in catalysis, where it acts as a catalyst in various chemical reactions, including oxidation processes and water treatment for removing toxins and heavy metals. Furthermore, its use in photodynamic therapy for cancer treatment is notable, as it can generate reactive oxygen species when exposed to light, targeting and destroying cancer cells, and it aids in medical imaging.