Coumarin-diene photoswitches for rapid and efficient isomerization with visible light. Issue 39 (30th April 2018)

• Record Type: Journal Article
• Authors: Richers, Matthew T.; Tran, Dinh Du; Wachtveitl, Josef; Ellis-Davies, Graham C. R.
• Is Part Of: Chemical communications. Volume 54:Issue 39(2018)
• Page Start: 4983
• Page End: 4986
• Publication Date: 2018-04-30
• Subjects: Chemistry -- Periodicals; 540
• DOI: 10.1039/c8cc01091a
• Languages: English
• ISSNs: 1359-7345

Abstract

Abstract : Coumarin-dienyl chromophores undergo rapid, fatigue-resistant bi-directional photoswitching with visible light. Abstract : We have developed 7-diethylaminocoumarin-based chromophores that photoisomerize with visible light. These photoswitches possess many desirable attributes, including large extinction coefficients (18 600–59 100 M −1 cm −1 ), high quantum yields (0.45–0.50) and resistance to photofatigue. Additionally, time-resolved spectroscopy indicates that both isomerization reactions are complete in less than 1 ns.