文摘
In this letter, we report on the development of a surface molecular sensor for the detection of acidity. Lithographicallycontrolled wetting deposition has been applied to form the nanostructure of a new fluorescent compound with threeprotonation states featuring different optical properties on a glass substrate. Atomic force microscopy demonstratesthe functionalization of the surface with ordered arrays of the sensor molecules. The fluorescence properties of theresulting nanopattern at different pH values have been investigated by confocal fluorescene microsopy, thus revealingthe fast, sensitive, reversible response of the prepared nanosensor to gas flows of varying acidity.