. 2023 Jul 31;11:1232690. doi: 10.3389/fchem.2023.1232690

TABLE 2.

Solid-state lifetimes of Ln^III centers at multiple temperatures from the [Eu] complex series, averaged across variable excitation wavelengths (298 K: dark red, 150 K: light red, 77 K: dark blue, 20 K: light blue). Both Eu^III and Tb^III values are calculated average lifetimes from a bi-exponential fit.

Lifetime		Eu^III τ_avg (ms)			Tb^III τ_avg (ms)
Complex		[Eu] (± 0.05 ms)	[Eu]₂DTPA (± 0.03 ms)	[Eu₂Tb] (± 0.02 ms)	[Eu₂Tb] (± 0.02 ms)
Temperature (K)	$298$	$0.58$	$0.76$	$0.15$	$0.23$
	$150$	$1.1$	$0.88$	$0.21$	$0.35$
	$77$	$1.2$	$0.88$	$0.23$	$0.34$
	$20$	$1.2$	$0.89$	$0.24$	$0.38$