Epoxy Based Polymer Bearing Activated 3-Arylazopyridine Unit as a Chromogenic Probe of Hg²⁺ Ion

Abstract

Epoxy-based polymer 1 bearing 3-arylazopyridine ligand is shown to be an efficient chromogenic probe for sensing Hg²⁺ ion. Addition of Hg²⁺ ion to a THF/water (4:1,v/v) solution of 1 gave a visual color change from yellow to brownish yellow with distinctive UV-Vis spectral changes over the surveyed metal ions such as Cu²⁺, Zn²⁺, Co²⁺, Ni²⁺, Cd²⁺, Pb²⁺, Mg²⁺, Ca²⁺, Sr²⁺ and Ag⁺ ions.

Keywords:

• Epoxy based polymer
• arylazopyridine ligand
• chromogenic probe
• Hg²⁺ ion

Funding

Funding from Department of Science and Technology (grant no: SR/FTP/CS-88/2007), Government of India, is gratefully acknowledged.