Diphenylethyne-3,3',5,5'-tetracarboxylic acid is primarily utilized in the synthesis of advanced organic materials, particularly in the development of high-performance polymers and coordination networks. Its multiple carboxylic acid groups enable it to act as a versatile building block for constructing metal-organic frameworks (MOFs), which are widely used in gas storage, separation, and catalysis due to their porous structures. Additionally, this compound is employed in the creation of conjugated polymers for electronic applications, such as organic semiconductors and light-emitting diodes (OLEDs), where its rigid and planar structure enhances charge transport properties. Its ability to form strong intermolecular interactions also makes it suitable for designing supramolecular assemblies with tailored optical and mechanical properties.