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

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.