4.7 Article

Coumarin-diene photoswitches for rapid and efficient isomerization with visible light

Journal

CHEMICAL COMMUNICATIONS
Volume 54, Issue 39, Pages 4983-4986

Publisher

ROYAL SOC CHEMISTRY
DOI: 10.1039/c8cc01091a

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Funding

  1. National Institutes of Health (USA)
  2. Deutsche Forschungsgemeinschaft (DFG) [GRK 1986]

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We have developed 7-diethylaminocoumarin-based chromophores that photoisomerize with visible light. These photoswitches possess many desirable attributes, including large extinction coefficients (18 600-59100 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.

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