9-Bromoanthracene is an organic compound featuring an anthracene core substituted with a bromine atom at the 9-position. It is a pale yellow to yellow crystalline solid with a molecular formula of C₁₄H₉Br. This compound is a key halogenated derivative of anthracene, a classic polycyclic aromatic hydrocarbon. Its primary and most significant application lies in materials science, particularly in the field of organic electronics. 9-Bromoanthracene serves as a crucial precursor or building block for the synthesis of various organic semiconductors, light-emitting materials, and photochromic compounds. It is widely used in the development of materials for organic light-emitting diodes (OLEDs), organic photovoltaics (OPVs), and organic field-effect transistors (OFETs). The bromine atom acts as an excellent leaving group, enabling efficient cross-coupling reactions (e.g., Suzuki, Stille, Heck) to construct more complex π-conjugated systems essential for optoelectronic properties. Beyond its role in advanced materials, it is also a versatile intermediate in organic synthesis for constructing anthracene-based molecular scaffolds. Due to its aromatic and potentially photoreactive nature, appropriate safety precautions regarding skin/eye irritation and environmental hazards should be observed during handling.