Through-bond energy transfer cassettes based on coumarin–Bodipy/distyryl Bodipy dyads with efficient energy efficiences and large pseudo-Stokes' shifts

Abstract

The energy transfer cassettes composed of coumarin and Bodipy as well as NIR distyryl Bodipys were designed to capture photonic energy and convert it to longer wavelength fluorescence emission; large pseudo-Stokes' shifts (up to 410 nm) and efficient energy transfer efficiencies (up to 98.6%) as well as a marked antenna effect were demonstrated.