Nickel(II) tetramethoxyphenylporphyrin is widely used in catalysis, particularly in organic synthesis, where it facilitates various oxidation reactions. Its structure allows it to act as an effective catalyst in the oxidation of alkanes and alkenes, making it valuable in the production of fine chemicals and pharmaceuticals. Additionally, it is employed in the development of sensors due to its ability to interact with specific analytes, enabling the detection of gases or other substances. In materials science, it is utilized in the creation of advanced materials, such as conductive polymers or coatings, owing to its unique electronic properties. Its role in photodynamic therapy is also being explored, where it can potentially be used to target and destroy cancer cells when activated by light.