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

• Author(s): Avó, João ; Martins, Sérgio ; Parola, António ; Lima, João ; Ramalho, João ; Branco, Paula ; Pereira, António
• Date: 2013
• Persistent ID: http://hdl.handle.net/10174/9316
• Origin: Repositório Científico da Universidade de Évora
• Subject(s): coumarins; density functional calculations; isomerization; photochemistry; photochromism
• Document Type: Article
• Language: English

Description

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.