144342-86-9Relevant academic research and scientific papers
New 2,2'-Bipyridine Derivatives and Their Luminescence Properties with Europium(III) and Terbium(III) Ions
Mukkala, Veli-Matti,Kankare, Jouko J.
, p. 1578 - 1592 (2007/10/02)
Twenty differently substituted 2,2',2",2"'-III and TbIII ions.The relative luminescence yields, excitation maxima, and emission decay constants were determined for the corresponding EuIII and TbIII chelates.The substituents at the bipyridine moiety had a significant effect on the luminescence properties: the best relative luminescence yields R were obtained for ligands with electron-donating substituents (e.g.Me, Ph), electron-withdrawing substituents (e.g.NO2, COOH) had a reverse effect.However, no clear correlation between the relative luminescence yields and the substituent parameters was found.
