EN
The ^{4}I_{9/2} → ^{4}I_{15/2} luminescence decay curves for a series of complexes Er(pdc)_{n}(acac)_{3-n} (pdc = pyridine-2,6-dicarboxylate, acac = acetylacetonate, n = 0, 1, 2, 3) as solids and in dilute aqueous solutions have been investigated. The decays are multiexponential, possible reasons for this and for the short lifetimes observed are discussed.