The coordination and sensing properties towards anions transition metal ions of the simple novel fluorescent urea 1-(2-aminophenyl)-3-(naphthalen-1)-yl)urea (L) were investigated in solution, solid state. An electron donating amine group molecular skeleton L decreased acidity NHs that are usually deprotonated by basic allowed for a good degree affinity fluoride DMSO-d6-0.5 %H2O. Moreover, moiet...