Abstract
Quadratic nonlinearities for octopolar stilbenylruthenium complexes are large for compounds without strongly accepting substituents. Cubic nonlinearities |γ|800 and two-photon absorption cross-sections σ2 increase on “dimensional evolution” from linear analogues to octopolar complexes, the latter possessing some of the largest |γ|800 and σ2 values for organometallics thus far, while cubic nonlinearities Im(χ(3))/N from the first application of electroabsorption spectroscopy to organometallics are also large, scaling with the number of metal atoms.
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