Abstract

Colorimetric sensor has been prepared for easy and simple detection of metal ion in aqueous solution. Metallochromic dyes which change color when combining certain metal ion are introduced to prepare colorimetric sensors. In order to introduce dye into hydrogel, metallochromic dyes are modified to acrylic monomer using esterification reaction. Dye functionalized hydrogels are prepared in the forms of bulk and porous using dye functionalized monomer and processed to manufacture user-friendly sensing kit. Porous hydrogel shows faster detecting time than that of bulk. The color change of sensing kit could be confirmed according to concentration of each metal and be tabulated using sensing kit of porous type. Fast and efficiently metal ion detecting ability is expected using the proper data-process of colors.

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