Luminescent materials and devices: lanthanide azatriphenylene complexes and electroluminescent charge transfer systems

It is shown that the successful sensitization of lanthanide luminescence by azatriphenylenes can be expanded from sensitization in non-hydroxylic solv ents to aqueous media by the addition of two or more carboxylate functional ities on the triphenylene skeleton. Furthermore, it is reported that a fluo rescent donor-bridge-acceptor system incorporated in a thin polymer film al lows the production of blue electroluminescence that can be tuned from blue to yellow by exposure to solvent vapours. (C) 2000 Elsevier Science S.A. A ll rights reserved.