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(a) UV-Vis spectra of P3 ([RU] = 30 μM) in THF/H2O (98:2, v/v) in the presence of 20 equiv. of different anions; (b) UV-Vis spectral changes of P3 ([RU] = 30 µM) in THF/H2O (98:2, v/v) upon addition of an increasing concentration of CN− (0, 120, 240, 270, 300, 330, 360, 390, 420, 450, 480, 510, 540, 570, 600, 700, 800, 900, 1000, 1200 and 1500 µM); and (c) visual images observed for P3 solutions upon addition of 50 equiv. each anion.
