Cover Picture: Toward Wearable Sensors: Fluorescent Attoreactor Mats as Optically Encoded Cross-Reactive Sensor Arrays (Angew. Chem. Int. Ed. 10/2012)



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Fluorescent probes have been synthesized on a zeptomole (10-21 mol) scale by overlaying polymer nanofibers that are doped with nonfluorescent probe precursors. In their Communication on page 2345 ff., P. Anzenbacher, Jr. et al. show that the nanoscopic fiber junctions generate the fluorescent probes in situ, and that multiple fibers, each loaded with a different reagent, can be used to form a multiprobe sensor array that is capable of recognizing heavy-metal ions.