Quadrupolar, emission-tunable π-expanded 1,4-dihydropyrrolo[3,2-b]pyrroles – synthesis and optical properties

A–D–A chromophores containing pyrrolo[3,2-b]pyrrole, as a central donor moiety, display blue, turquoise, yellow and orange fluorescence, depending on the strength of the electron-withdrawing substituent.

Organization and intramolecular charge-transfer enhancement in tripodal tris[(pyridine-4-yl)phenyl]amine push–pull molecules by intercalation into layered materials bearing acidic functionalities

Intercalation of tripodal molecules into zirconium phosphate and zirconium 4-sulfophenylphosphonate leads to their organization in a layered system of the hosts.