RESUMO
3-(1-Alkynyl)perylenes undergo oxygenation when subjected to irradiation with visible light under aerated conditions. The structures of novel oxygenated products formed in this manner are assigned as regioisomeric dibenzo[jk,mn]phenanthrene-4,5-diones.
Assuntos
Luz , Oxigênio/química , Oxigênio/efeitos da radiação , Perileno , Fenantrenos/química , Fenantrenos/síntese química , Fenantrenos/efeitos da radiação , Espectroscopia de Ressonância Magnética/métodos , Estrutura Molecular , Oxirredução , Perileno/análogos & derivados , Perileno/síntese química , Perileno/efeitos da radiação , FotoquímicaRESUMO
DNA-like fluorescent oligomers composed of alkynyl beta-D-ribofuranosides bearing pyrene, perylene, and anthracene as a fluorophore were synthesized by solid-phase DNA synthesis. The fluorescent oligomers possess the defined number and order of the fluorophores. In these oligomers, the adjacent fluorophores efficiently interact with each other by hydrophobic interactions in their electronic ground states in a face-to-face fashion. The predominant excimer emissions were observed from not only the homooligomers (pyrene-pyrene and perylene-perylene systems) but also the heterooligomers (pyrene-perylene, pyrene-anthracene, and perylene-anthracene systems) in aqueous media.
