Iyappan, Mathivanan, et al. “Novel Schiff Base of E-2-(((4-Aminophenyl)imino)methyl)-5-(difluoromethoxy)phenol Fluorescence Chemosensor for Detection of Al3+, Fe2+, Cu2+ Ions and Its Application towards Live Cell Imaging”. Asian Journal of Chemistry, vol. 32, no. 4, Feb. 2020, pp. 739-45, doi:10.14233/ajchem.2020.22394.