Functional layers for ZnII ion detection: From molecular design to optical fiber sensors

Abstract

We report on the synthesis of a novel perylene monoimide derivative that shows high response and selectivity for zinc ion detection. The complexation of Zn2+ by the dye is followed by FD-MS, 1H NMR, UV-vis spectroscopy, and isothermal titration calorimetry. Quantum chemical calculations are performed to gain further insight into the electronic processes responsible for the spectroscopic changes observed upon complexation. Finally, the perylene dye is incorporated in a sol-gel silica layer coated on optical fibers that are then used for Zn2+ detection in aqueous solution. © 2013 American Chemical Society.