UV-Vis spectra of the prepared compounds were measured in the region (200-400) nm for 30 μM solutions in distilled water at 25 °C using a Shimadzu 1800 spectrophotometer matched quartz cell. All 31 P NMR spectroscopy was performed using a Bruker DPX 400 spectrometer with 85% phosphoric acid as an external standard. All spectra were recorded using 50 mg samples dissolved in D2O. All tetrabutylammonium (TBA) salts were recorded using 50 mg samples dissolved in CD3CN.