Modification of Basic Dye with Clay Available to Purchase

We modified a basic dye, which carries a positive charge, by inducing an exchange with clay, and then analysed the results by using Fourier transform infrared (FT-IR) and ultraviolet-visible (UV-Vis) spectroscopy, X-ray diffraction (XRD) and thermogravimetric analysis (TGA). The intercalation of basic dye into clay modifies the thermal properties of the dye, and the dyes become more stable as more clay is added. The colour of the modified dyes does not change with the addition of more clay, although its absorption decreases, thereby conferring improved sunlight colour fastness on the modified dyes.