A coordination polymer nanobelt (CPNB)-based aptasensor for sulfadimethoxine

► Discovery of single-stranded DNA aptamers for sulfadimethoxine using SELEX. ► An aptasensor consisting of the fluorescein amidite-modified aptamer and coordination polymer nanobelts. ► Use of the quenching effect to detect sulfadimethoxine in real samples. ► Highly sensitive and selective sensing platform for antibiotics.