Perylene-conjugated pyrrole (Py)-polyamide 2 was designed and synthesized using the Fmoc solid-phase synthesis and a subsequent Sonogashiracouplingreaction with 3-bromoperylene. Interestingly, conjugate 2 did not luminesce in water at 313 nm irradiation but was turned on in the presence of target double-stranded (ds) DNA, and showed strong emission with increasing DNA concentration, in particularly