The strength of fluorous attractions exhibited by the fluoroalkyl chains was further demonstrated by using the fluorous tag on Co Terpy-RF to attach it to a matching fluorous surface. To this end, indium tin oxide (ITO) was first modified with a fluoroalkyl phosphonic acid and subsequently incubated with a Co Terpy-RF solution. After thorough washing, X-ray photoelectron spectroscopy (XPS) of the modified ITO showed signals in the Co 2p, F 1s and N 1s regions similar to those of the pure complex, confirming the Co Terpy-RF was intact on the surface and strongly adheres to other fluorinated species (Fig. ).