Dinaphtho[2′,3′:5,6][1,4]dithiino[2,3-b:2,3-e]pyridine, its 16-butyl derivative and dinaphtho[2′,3′:5,6][1,4]dioxo[2,3-b:2,3-e]pyridine: Novel heterocycles as electron donor compounds

1. Troya, C.
2. Vidal, A.
3. Brillas, E.
4. Rius, J.
5. Torrelles, X.
6. Alemán, C.
7. Casanovas, J.
8. Juliá, L.