Fig. 7
From: A stoichiometric terbium-europium dyad molecular thermometer: energy transfer properties
Emission spectra (λexc = 355 nm) and thermometric properties of complexes. cycTb-phEu a and cycEu-phTb b recorded at 10, 50, 100, 150, 200, 250, and 298 K. Temperature-dependent long-term lifetimes of 5D0 (Eu3+) and 5D4 (Tb3+) for cycTb-phEu (c) and cycEu-phTb d. Natural logarithm of the emission count ratio 5D0 → 7F4 (Eu3+): 5D4 → 7F5 (Tb3+) plotted against temperature for e cycTb-phEu with fitting equation y = (0.83 ± 0.10) + (0.0085 ± 0.0005)x, Radj2 = 0.9823 and f cycEu-phTb with fitting equation: y = (1.32 ± 0.07) ± (0.0188 ± 0.0006)x, Radj2 = 0.9960
