. 2021 Dec 21;7(1):921–932. doi: 10.1021/acsomega.1c05386

Table 2. Peak Maxima and Relative Integrated Intensities for Luminescence Emission of Eu³⁺ Dissolved in Choline Chloride–Ethylene Glycol, −Urea, and −Lactic Acid DESs^a.

	ethylene glycol		urea		lactic acid
transition	λ/nm	relative intensity	λ/nm	relative intensity	λ/nm	relative intensity
⁵D₀ → ⁷F₀	581.12	0.06	578.92	0.10	580.84	0.08
⁵D₀ → ⁷F₁	592.94	1.00	593.21	1.00	592.94	1.00
⁵D₀ → ⁷F₂	616.00	3.21	613.26	3.41	614.91	5.41
⁵D₀ → ⁷F₃	651.10	0.15	651.37	0.21	651.92	0.22
⁵D₀ → ⁷F₄	697.03	1.68	700.30	2.14	699.21	1.56

The ⁵D₀ → ⁷F₁ integrated intensities were normalized to make them equal in all spectra. Relative intensity refers to the integrated intensity of each ⁵D₀ → ⁷F_J transition divided by that of the ⁵D₀ → ⁷F₁ transition.

Table 2. Peak Maxima and Relative Integrated Intensities for Luminescence Emission of Eu3+ Dissolved in Choline Chloride–Ethylene Glycol, −Urea, and −Lactic Acid DESsa.

Table 2. Peak Maxima and Relative Integrated Intensities for Luminescence Emission of Eu³⁺ Dissolved in Choline Chloride–Ethylene Glycol, −Urea, and −Lactic Acid DESs^a.