MOLECULAR FLUORESCENT SIGNALING WITH FLUOR SPACER RECEPTOR SYSTEMS - APPROACHES TO SENSING AND SWITCHING DEVICES VIA SUPRAMOLECULAR PHOTOPHYSICS

The established principle of photoinduced electron transfer is combined with the modular system 'Fluor-Spacer-Receptor' in order to develop rationally an approach to the phenomenon of guest-responsive fluorescence. This approach is highlighted with regard to its flexibility, expandability, and its ability formally to unify a wide variety of fluorescent signalling strategies. Its value for the development of molecular photoionic devices with digital action as well as for the design of sensors for chemical species and propertities is pointed out.