Luminescence Probes : The Eu3⊕‐ and Tb3⊕‐Cryptates of Polypyridine Macrobicyclic Ligands

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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Detail(s)

Original languageEnglish
Pages (from-to)1266-1267
Journal / PublicationAngewandte Chemie (International Edition)
Volume26
Issue number12
Publication statusPublished - Dec 1987
Externally publishedYes

Abstract

A 104‐ to 105‐times more intense absorption than the corresponding aqua complexes is exhibited by the cryptates 1 and 2; in the latter the ligand absorbs, in the former the metal ion. From the luminescence‐lifetimes in H2O and D2O it can be deduced that in Eu aq3⊕ nine or ten H2O molecules coordinate the Eu3⊕ ion, whereas in 1 only two or three H2O molecules coordinate. Even in 10‐5 molar aqueous solutions, 1 and 2 can absorb 1% of the incident UV photons and emit them again as visible light. (Figure Presented.) Copyright © 1987 by VCH Verlagsgesellschaft mbH, Germany

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Citation Format(s)

Luminescence Probes: The Eu3⊕‐ and Tb3⊕‐Cryptates of Polypyridine Macrobicyclic Ligands. / Alpha, Béatrice; Balzani, Vincenzo; Lehn, Jean‐Marie et al.
In: Angewandte Chemie (International Edition), Vol. 26, No. 12, 12.1987, p. 1266-1267.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review