ʻO 2-Aminophthalic acid, kahi pauka crystalline melemele māmā, hiki ke copolymerized me nā pūhui amine e hoʻomākaukau ai i nā catalysts, a hiki ke hoʻohana ʻia ma ke ʻano he ligand organik i loko o ke kemika coordination metala e hoʻomākaukau ai i nā paʻa paʻa.