Pontage du 1,6-dithiényl hexa-1,3,5-triène : vers la rigidification de polyènes
Résumé
The synthesis of compounds 2, covalently bridged analogues of 1,6-dithienyl hexa-1,3,5- triene 1, is described. A comparative study shows that rigidification leads to a decrease of the oxidation potentials and to the stabilization of the oxidized species. An enhancement of π electron delocalization and an exaltation of the photoluminescence efficiency are also observed.