title: Water-Soluble Neutral Calix[4]arene-Lanthanide Complexes: Synthesis and Luminescence Properties.
abstract: Water-soluble calix[4]arenes 10a,b with chromophores ("antenna") attached to the lower rim via a short spacer are described. In the neutral lanthanide complexes of 10a,b photoexcitation of the antenna induces lanthanide emission via intramolecular energy transfer. Calix[4]arene 10b with a chrysene moiety as sensitizer shows strong lanthanide emission for Eu(3+) with an excitation maximum at lambda = 363 nm.
authors.affiliation: Laboratory of Organic Chemistry, University of Amsterdam, Nieuwe Achtergracht 129, 1018 WS Amsterdam, The Netherlands.
authors.forename: Frank J.
authors.initials: FJ
authors.lastname: Steemers
authors.forename: Hans G.
authors.initials: HG
authors.lastname: Meuris
authors.forename: Willem
authors.initials: W
authors.lastname: Verboom
authors.forename: David N.
authors.initials: DN
authors.lastname: Reinhoudt
authors.forename: Erik B.
authors.initials: EB
authors.lastname: van Der Tol
authors.forename: Jan W.
authors.initials: JW
authors.lastname: Verhoeven