Dual door entry to exciplex emission in a chimeric DNA duplex containing non-nucleoside–nucleoside pair†
Abstract
Dual door entry to exciplex formation was established in a chimeric DNA duplex wherein a fluorescent non-nucleosidic base surrogate (OxoPyS) is paired against a fluorescent nucleosidic base surrogate (TPhenBDo). Packing of the nucleobases via intercalative stacking interactions led to an exciplex emission either via FRET from the donor TPhenBDo or direct excitation of the FRET acceptor OxoPyS.