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Water-Soluble Neutral Calix[4]arene-Lanthanide Complexes: Synthesis and Luminescence Properties
Frank J. Steemers1, Hans G. Meuris, Willem Verboom
1Laboratory of Organic Chemistry, University of Amsterdam, Nieuwe Achtergracht 129, 1018 WS Amsterdam, The Netherlands.
The Journal of Organic Chemistry
|June 27, 1997
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.