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2,2′‐Bipyridine Lariat Calixcrowns: A New Class of Encapsulating Ligands Forming Highly Luminescent Eu 3+ and Tb 3+ Complexes
Author(s) -
Fischer Claudia,
Sarti Gianluca,
Casnati Alessandro,
Carrettoni Barbara,
Manet Ilse,
Schuurman Ruud,
Guardigli Massimo,
Sabbatini Nanda,
Ungaro Rocco
Publication year - 2000
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/(sici)1521-3765(20000317)6:6<1026::aid-chem1026>3.0.co;2-c
Subject(s) - acetonitrile , luminescence , chemistry , terbium , ligand (biochemistry) , europium , metal , polymer chemistry , bipyridine , solvent , crystallography , photochemistry , materials science , crystal structure , receptor , organic chemistry , biochemistry , optoelectronics
A new class of calix[4]arene crown ethers with one or two bipyridines appended to the polyether ring ( lariat calixcrowns) have been designed and synthesized; the luminescence properties of their Eu 3+ and Tb 3+ complexes have been studied in acetonitrile. In this solvent, long lifetimes for the metal emitting states and high metal‐luminescence intensities obtained upon ligand excitation have been observed in both Eu 3+ and Tb 3+ complexes. The association constants in methanol have been determined for some of the complexes studied.