A Family of Styrylcoumarins: Synthesis, Spectroscopic, Photophysical and Photoc...

• Autor(es): Avó, João ; Martins, Sérgio ; Parola, António ; Lima, João ; Ramalho, João ; Branco, Paula ; Pereira, António
• Data: 2013
• Identificador Persistente: http://hdl.handle.net/10174/9316
• Origem: Repositório Científico da Universidade de Évora
• Assunto(s): coumarins; density functional calculations; isomerization; photochemistry; photochromism
• Tipo de Documento: Artigo
• Idioma: Inglês

Descrição

A new family of 5-styrylcoumarins exhibit E–Z isomerization around the Cα[DOUBLE BOND]Cβ bond with large extinction coefficients, medium-lived excited states, and moderate fluorescence quantum yields (see picture). The alteration of these photophysical properties is also corroborated by computational studies.