Table 1. Luminescence spectroscopic parameters of uranyl(vi)-hydroxo complexes and comparison with literature. Main peaks are in bold.

Complex	Peak positions (nm)							Lifetime (μs) 25 °C	Lifetime (μs) 1 °C	Excitation maximum (nm)	Reference
UO2 2+	472	486	508	532	559	588				270	CW spectroscopy
	472	486	509	533	560	590			4.5		TRLFS 1 °C
	471	486	508	532	559	589		0.8			TRLFS 25 °C
	470	488	509	533	559	588		2			19
								2.2			51
	470	488	510	533				2.3			53
	470	488	510	534	560	588		7.9			60
		489	510	535	560			1.7			62
		488	509	534	560			0.9			63
	478	488	510	533				1.55			64
	473	488	510	534	560	587		1.9			65
UO2OH+	481	495	517	541	567	596				285	CW spectroscopy
	480	495	517	541	567	595			42.8		TRLFS 1 °C
	480	496	517	541	567	595		7.9			TRLFS 25 °C
	480	497	519	544	570	598		80			50
								39.3			51
								33.8			52
		496	518	542	566			32.8			62
		494	515	538	564			10.5			64
								8.3			66
(UO2)3(OH)5 +		496	511	533	556	582				300	CW spectroscopy
		496	511	533	557	584			183		TRLFS 1 °C
		495	511	533	558	585		21.6			TRLFS 25 °C
	479	496	514	535	556	584	613	23			19
								25.3			51
	479	498	514	533				33.3			53
	479	496	515	536	556	584	613	6.6			62
	479	500	516	533	554	584	613	7			64
(UO2)3(OH)7 –	489	505	525	548	572					325	CW spectroscopy
	488	507	528	551	575	603			17.5		TRLFS 1 °C
	488	504	525	548	574	601		7.6			TRLFS 25 °C
	487	508	528	549	577	606		230			19
	487	503	523	547	574	606		10			62
UO2(OH)3 –		498	518	539	562	587				270	CW spectroscopy
	482	499	519	540	563				4.2		TRLFS 1 °C
	482	501	522	544	569			1.4			TRLFS 25 °C
	482	499	519	543	567	594		0.8			19
	482	506	524	555	568	594		0.4			62