In the titration experiments all four anions (F−, CH3COO−, Br− and Cl−) were added in the form of the corresponding tetrabutylammonium (TBA+) salts purchased from Sigma-Aldrich and used without further purification. Zn2+ cation was added in the form of ZnCl2 (Sigma-Aldrich). Distilled water was used in all H2O titration experiments.
Cigáň M., Horváth M., Filo J., Jakusová K., Donovalová J., Garaj V, & Gáplovský A. (2017). 7-Dialkylaminocoumarin Oximates: Small Molecule Fluorescent “Turn-On” Chemosensors for Low-Level Water Content in Aprotic Organic Solvents. Molecules : A Journal of Synthetic Chemistry and Natural Product Chemistry, 22(8), 1340.