Tunable red–green–blue fluorescent organogels on the basis of intermolecular energy transfer

One or two-component gels with tunable emission colours were obtained from the assembly of three red–green–blue fluorescent molecules. The intermolecular energy transfer between these molecules played a crucial role in providing the tunable colour by a single excitation wavelength of 365 nm in the mixed gels. These gels are ideal constituents for the design of supramolecular light harvesting assembled materials, which afford a novel approach to display in soft organic materials with tunable optical properties.