Pyrrole Based Schiff Base as a Highly Sensitive Fluorescent Sensor for Fe3+ and Sn2+ Ions

Condensation product of o-aminophenol and pyrrole-2-carboxylaldehyde behaves as a fluorescent sensor for Fe3+ and Sn2+ ions in aqueous medium over the other metal ions like Na+, K+, Mg2+, Zn2+, Cd2+, Hg2+, Mn2+ and Cr3+. In aqueous solution, Fe3+ and Sn2+ ions coordinate to the receptor through a NON binding site which induces a strong fluorescence enhancement. Receptor can be applied as fluorescence enhanced probes for transition metal ions due to the inhibition of photo induced electron transfer (PET) mechanism