Heterotrilantanide cluster complexes exhibiting up-conversion luminescence in water†
Abstract
Heterotrinuclear cluster complexes consisting of Er–Yb- and Tb–Yb–thiacalix[4]arene-p-tetrasulfonate exhibited photon up-conversion luminescence in water, in which visible light emission from the Er and Tb center, respectively, was induced by two-photon excitation of the Yb center with near-infrared light.