10.1021/jo802792j.s001 Laura Rivado-Casas Laura Rivado-Casas Diego Sampedro Diego Sampedro Pedro J. Campos Pedro J. Campos Stefania Fusi Stefania Fusi Vinicio Zanirato Vinicio Zanirato Massimo Olivucci Massimo Olivucci Fluorenylidene−Pyrroline Biomimetic Light-Driven Molecular Switches American Chemical Society 2009 Molecular Fluorenylidene biomimetic photoactivated photoisomerization step chromophore chiral substituents absorption 50 nm compound rotation Biomimetic Expedient synthesis light source substitution pattern 2009-07-03 00:00:00 Dataset https://acs.figshare.com/articles/dataset/Fluorenylidene_Pyrroline_Biomimetic_Light_Driven_Molecular_Switches/2845897 A new family of biomimetic photoactivated molecular switches based in the retinal chromophore is described. Expedient synthesis allows a library of compounds with a different substitution pattern, including chiral substituents, to be obtained. The effect of substitution, solvent, and light source on the photoisomerization step has been assessed. The absorption maximum has been red-shifted ca. 50 nm with respect to related systems and rotation is now easily achieved by using visible light.