| The use of amphiphilic dyes allows self assembly of regularly structured aggregates in aqueous solutions. For a special class of cyanine dyes we have found tubular structures with diameters of 15 to 20 nm and length up to several hundreds of micrometers. These nanotubes exhibit strong excitonic coupling as can be seen by the characterisitc absorption and fluorescence spectra. By adsorption of oppositely charged polyelectrolytes at the surface of tese tubes the order of complexity is increased. Using polyelectrolytes doped with other dye materials allows the investigation of energy transfer from and to the J-aggregates. This concept will be introduced and discussed in the talk. |
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