| Popis: |
Colorless crystals of 1,4-dicyano-2-(4′-methoxybenzyloxy)methylnaphthalene ( 2 ), which is a 1,4-dicyano-2-methylnaphthalene (DCMN)–4-methylanisole (MA) dyad linked by an ether unit, selectively form a fluorescent intermolecular DCMN–MA exciplex (greenish blue, λ f exciplex = 456 nm ). In contrast, 1,4-dicyano-2-(4′-methylbenzyloxy)methylnaphthalene ( 3 ), which is a DCMN– p -xylene dyad, forms a fluorescent intermolecular DCMN–DCMN excimer in the crystalline state (blue, λ f excimer = 404 nm ). These findings demonstrate that a moderate charge transfer interaction takes place between the DCMN moiety of 2 and MA moieties of the adjacent molecules of 2 , which successfully facilitates the preparation of light-emissive organic crystals. |
Full Text from ScienceDirect