. Author manuscript; available in PMC: 2010 Jun 10.

Published in final edited form as: Aust J Chem. 2009 Oct 13;62(10):1300–1307. doi: 10.1071/CH09314

Table 2.

UV/visible absorption data of the studied Eu(III) complexes in 0.1 M aqueous TRIS buffer (pH= 7.4) and triplet excited state energies determined for the corresponding Gd(III) complexes at 77K.

	0.1 M aqueous TRIS buffer, pH= 7.4		77K ^a

	λ^max_abs / nm	ε/ M⁻¹.cm⁻¹	T_0-0 / nm (cm⁻¹)
[Eu(5LI-1,2-HOPO)₂] ⁻	331	18,800	21,260
[Eu(H(2,2)-1,2-HOPO)] ⁻	341	18,200	21,980
[Eu(3LI-bis-LYS-1,2-HOPO)] ⁻	333^b	15,760^b	22,120

determined in a solid matrix at 77K (1:4 (v/v) MeOH:EtOH) using the Gd(III) complexes

containing 1% (v/v) DMSO for solubility.