“…[10] The emission spectra exhibit the characteristic peaks for each metal ion, 5 D 0 Ǟ 7 F J (J = 0, 1, 2, 3, 4) for Eu III (578, 592, 614, 652, and 698 nm) and 5 D 4 Ǟ 7 F J (J = 6, 5, 4, 3, 2, 1) for Tb III (489, 545, 583, 620, 652, and 668 nm) ( Figure 2). [10] The emission spectra exhibit the characteristic peaks for each metal ion, 5 D 0 Ǟ 7 F J (J = 0, 1, 2, 3, 4) for Eu III (578, 592, 614, 652, and 698 nm) and 5 D 4 Ǟ 7 F J (J = 6, 5, 4, 3, 2, 1) for Tb III (489, 545, 583, 620, 652, and 668 nm) ( Figure 2).…”