In the present work, we designed and synthesized a rhodamine derived "off-on" probe for Hg(II) detection, which might be potentially used in eco-industrial park. By grafting this probe onto the surface of an up-conversion NaYF4:Yb3+/Er3+ excitation source, a Hg(II) sensing system was resulted. The nanocomposite was carefully characterized and analyzed by electron microscopy images, XRD analysis, IR spectra, thermogravimetry, UV-Vis absorption and fluorescence emission. Experimental data confirmed the structure of the nanocomposite. There was an efficient energy transfer between the excitation ...
