Structure–property relationships of acylated asymmetric dithienophospholes - 14/09/10
pages | 9 |
Iconographies | 5 |
Vidéos | 0 |
Autres | 0 |
Abstract |
Friedel-Crafts acylation was found to be an effective way to selectively access mono-functionalized dithienophospholes. Absorption and emission properties of the acylated compounds exhibited high extinction coefficients, relative to unsubstituted dithienophosphole and bathochromic shifts when in the presence of Lewis-acids, e.g., AlCl3 and BF3, effectively demonstrating that the emissive characteristics could be tuned. Subsequent treatment of the asymmetric mono-substituted compounds with N-bromosuccinimide, yielded materials that were later employed in Ni-catalyzed Yamamoto cross-coupling reactions. The resulting cross-coupled material exhibited a substantial increase in its extinction coefficient as well as a further red-shifted absorbance and emission profile, relative to the mono-functionalized phosphole.
Le texte complet de cet article est disponible en PDF.Keywords : Phosphorus heterocycles, Materials science, Acylation, Fluorescence, Density functional calculations, Cross-coupling
Plan
Vol 13 - N° 8-9
P. 971-979 - août 2010 Retour au numéroBienvenue sur EM-consulte, la référence des professionnels de santé.
L’accès au texte intégral de cet article nécessite un abonnement.
Bienvenue sur EM-consulte, la référence des professionnels de santé.
L’achat d’article à l’unité est indisponible à l’heure actuelle.
Déjà abonné à cette revue ?