Phenanthrene is widely used in the production of dyes, plastics, and pesticides due to its aromatic structure. It serves as a key intermediate in synthesizing various organic compounds, including pharmaceuticals like certain anti-inflammatory and anti-malarial drugs. In research, phenanthrene is utilized as a model compound to study polycyclic aromatic hydrocarbons (PAHs) and their environmental impact, particularly in understanding pollution and biodegradation processes. Additionally, it is employed in the fabrication of optical materials and as a fluorescence probe in biochemical studies.