N-Salicylideneaniline is primarily used in the field of materials science and organic chemistry due to its photochromic properties. It undergoes reversible color changes when exposed to light, making it valuable in the development of optical switches, smart windows, and light-sensitive coatings. Additionally, it serves as a ligand in coordination chemistry, forming complexes with metals for catalytic applications. Its ability to act as a chelating agent is also exploited in the synthesis of novel organic compounds and in the study of molecular interactions. Furthermore, it finds use in research related to photophysical and photochemical processes, aiding in the understanding of light-induced molecular transformations.