A Simple Unimolecular Multiplexer/Demultiplexer


  • Financial support by the Italian Ministry of University and Research (PRIN 2006034123_003) and the University of Bologna (Progetto strategico CompReNDe) is gratefully acknowledged. We thank Prof. V. Balzani and Dr. M. Montalti for discussions.


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Simple but effective! 8-Methoxyquinoline, an unsophisticated fluorophore, displays both 2:1 multiplexer and 1:2 demultiplexer digital functions (see picture). Protonation of the fluorophore results in completely different optical spectral profiles and multiplexing/demultiplexing behavior is obtained by exploiting the proton-driven reversible modulation of two complementary absorption and fluorescence signals.