A 2-hydroxy-5-methyl-benzene-1,3-dicarboxaldehyde di-oxime based turn-on blue emission fluorescent probe was found to recognize both AsO2− and H2AsO4− in a purely aqueous medium in intra and extra-cellular conditions.
A new cell permeable rhodamine based Schiff base (L) senses nanomolar level of Al3+ ions through CHEF process and its Al(iii) complex (2) behaves as a highly F− ions selective biomarker through fluorescence quenching in HEPES buffer.