Europium compounds

Europium compounds fluoresce under UV light at 395 nm and 365 nm.^[1]

Europium compounds are compounds formed by the lanthanide metal europium (Eu). In these compounds, europium generally exhibits the +3 oxidation state, such as EuCl₃, Eu(NO₃)₃ and Eu(CH₃COO)₃. Compounds with europium in the +2 oxidation state are also known. The +2 ion of europium is the most stable divalent ion of lanthanide metals in aqueous solution.^[2] Many europium compounds fluoresce under ultraviolet light due to the excitation of electrons to higher energy levels.^[1] Lipophilic europium complexes often feature acetylacetonate-like ligands, e.g., Eufod.

^ ^a ^b Galimov, D.I.; Bulgakov, R.G. (Feb 2019). "The first example of fluorescence of the solid individual compounds of Eu 2+ ion: EuCl 2 , EuI 2 , EuBr 2". Luminescence. 34 (1): 127–129. doi:10.1002/bio.3580. PMID 30520220. S2CID 54527606.
^ 无机化学丛书. pp 187-188. 1.2.3 氧化态及电极电势.

[Galimov-1] Galimov, D.I.; Bulgakov, R.G. (Feb 2019). "The first example of fluorescence of the solid individual compounds of Eu 2+ ion: EuCl 2 , EuI 2 , EuBr 2". Luminescence. 34 (1): 127–129. doi:10.1002/bio.3580. PMID 30520220. S2CID 54527606.

[2] 无机化学丛书. pp 187-188. 1.2.3 氧化态及电极电势.

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