Fig. 4
From: A stoichiometric terbium-europium dyad molecular thermometer: energy transfer properties
5D0 → 7F4 Eu3+ and 5D4 → 7F5 Tb3+ emission decays (λexc = 355 nm) at different temperatures. cycEu-phTb: a Eu3+ and b Tb3+; cycTb-phEu c Eu3+ and d Tb3+; cycTb-phen e Tb3+. Black, 10 K; red, 50 K; blue, 100 K; cyan, 150 K; green, 200 K; magenta, 250 K; and violet, 298 K
