95870-54-5Relevant articles and documents
Two new methods to form substituted oligoethylene glycols
Krakowiak, Krzysztof E.,Bradshaw, Jerald S.,Huszthy, Peter
, p. 2853 - 2856 (1994)
1-Bromo-2-trityloxyethane (1) and 1-allyloxymethyl-2-trityloxyethanol (2) react readily at room temperature with substituted oligoethylene glycols or the ditosylate derivative of an oligoethylene glycol, respectively, to form the extended, ditrityl-protected, substituted oligoethylene glycols in high yields. The trityl groups are easily removed by acidified methanol in CH2Cl2 to give the extended, substituted oligoethylene glycols.
2,2'-Bipyridine lariat calixcrowns: A new class of encapsulating ligands forming highly luminescent Eu3+ and Tb 3+ complexes
Fischer, Claudia,Sarti, Gianluca,Casnati, Alessandro,Carrettoni, Barbara,Manet, Ilse,Schuurman, Ruud,Guardigli, Massimo,Sabbatini, Nanda,Ungaro, Rocco
, p. 1026 - 1034 (2007/10/03)
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 Eu3+ and Tb3+ 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 Eu3+ and Tb3+ complexes. The association constants in methanol have been determined for some of the complexes studied.