Département de chimie moléculaire

The synthesis and optical properties of a novel family of 5-substituted-1,10-phenanthroline derivs. are reported herein. One carbon-carbon triple-bond function was introduced using a Sonogashira cross-coupling reaction. The effects on optical properties, of the substitution with electro-withdrawing or -donating substituents in the 5th position of the 1,10-phenanthroline are investigated. Exptl. chem. structure-polarisability relationship is analyzed according to the Lippert-Mataga correlation and compared to a theor. study carried out with DFT calcns. These compds. are promising candidates for a fine-tuning of the internal charge-transfers but also as potential nonlinear chromophores and ligands within multifunctional coordination complexes. [on SciFinder(R)]