The synthesis, photophysical properties and energy transfer of a coumarin-based bichromophoric compound

The energy transfer between two coumarin compounds having donor emission/acceptor absorption spectra overlap was studied firstly in solution by applying an excess of the acceptor. The observed transfer was then confirmed in the bichromophoric compound resulting from the covalent binding of the two fluorophores via a short alkyl chain. [Copyright &y& Elsevier]