1,4-Bis(4-aminophenoxy)benzene (TPE-Q), CAS 3491-12-1, is an aromatic diamine monomer featuring flexible ether linkages that facilitate the synthesis of high-performance polymers like polyimides, which possess enhanced thermal stability, solubility, mechanical toughness, and semicrystalline properties; this high-purity diamine monomer, essential for high-temperature polyimides, COF/MOF ligands, di