Used as a building block in polymer chemistry, particularly in the synthesis of functional polyesters and polyamides. Its rigid fluorene core enhances thermal stability and mechanical strength in the resulting polymers. Commonly employed in the development of advanced materials for electronic devices, including organic semiconductors and light-emitting diodes (OLEDs). Also utilized in designing metal-organic frameworks (MOFs) due to its ability to chelate metal ions through carboxylic acid groups. Shows potential in biomedical applications for creating biodegradable scaffolds and drug delivery systems.