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Extraction of metal cation through liquid membrane is one of the important application of supramolecular chemistry. This work investigates the use of synthetic carrier (ionophore) for the extraction of transition metal cations. In this work effect of light on extraction of metal cations through chromophoric ionophore have been tested. For this purpose, a non-cyclic ionophore,1phenylazonaphth-2-ol has been used to extract transition metal cations (Co2+, Ni2+, Cu2+ and Zn2+). Chloroform is used as a solvent. The extracted amount of metal cations depends mainly upon the structure and the concentration of the ionophore and also on the concentration of metal ions. These studies were focused on the capacity of the ionophore to extract metal cation from an aqueous phase into an Organic phase by complexation. On comparing the results of extraction of metal cations (Co2+, Ni2+, Cu2+ and Zn2+) with ionophores1-phenylazonaphth-2-olin the presence of artificial light source (100W) and natural light it is observed that these ionophores exhibit the photo responsive properties.

Optical Studies on Extraction of Some Transition Metal Cations Through Liquid Membrane Containing 1-Phenylazonaphth-2-Ol as Ionophore