Switching the Cubic Nonlinear Optical Properties of an Electro-, Halo-, and Photochromic Ruthenium Alkynyl Complex Across Six States


  • Organometallic Complexes for Nonlinear Optics. Part 46. This work was supported by the Australian Research Council and the Foundation for Polish Science. M.G.H. thanks ARC for an Australian Professorial Fellowship. K.A.G. is an Australian Postgraduate Awardee. M.S. is a laureate of the FPS Welcome programme. Part 45: R. L. Roberts, T. Schwich, T. C. Corkery, M. P. Cifuentes, K. A. Green, J. D. Farmer, P. J. Low, T. B. Marder, M. Samoc, M. G. Humphrey, Adv. Mater.2009, 21, 2318.


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More than on and off: The title complex (see picture) comprises addressable modules that respond independently to protic (alkynyl ligand⇄vinylidene ligand), electrochemical (metal-centered redox: RuII⇄RuIII), and photochemical (dithienylperfluorocyclopentene ring-opening⇄ring-closing) stimuli. The six states are interconverted along seven pathways, all of which result in distinct changes to cubic nonlinearity.