Sensitized near-infrared emission from Nd3+ and Er3+ complexes of fluorescein-bearing calix[4]arene cages
- Oude Wolbers, M.P.
- van Veggel, F.C.J.M.
- Peters, Frank G.A.
- van Beelen, Eric S.E.
- Hofstraat, Johannes W.
- Geurts, Frank A.J.
- Reinhoudt, David
Publication date
January 1998
DOIAbstract
Efficient intramolecular energy transfer (ET) from an excited chromophore to Nd3+ and Er3+ ions with subsequent emission in the near-infrared (h2) is possible in novel compounds (1). These are made by covalent attachment of fluorescein to a calix[4]arene possessing a cavity at the lower rim in which the trivalent lanthanoid ions are complexed
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