Used primarily as an intermediate in organic synthesis, especially in the preparation of functionalized fluorene derivatives for optoelectronic materials. It serves as a building block in the production of conjugated polymers and small molecules used in organic light-emitting diodes (OLEDs) and organic photovoltaics (OPVs). The reactive dichloro group allows for further chemical modifications, enabling the introduction of various substituents to tune electronic properties. Also employed in the synthesis of ligands and metal-organic frameworks where rigid, planar structures are beneficial. Its stability and aromatic character make it suitable for applications requiring robust molecular frameworks in material science.