Key points are not available for this paper at this time.
Spontaneous octupolar ordering in a dendrimer has been observed for highly nonlinear ruthenium complexes. Various oligomers containing N ruthenium-tris-bipyridine monomers have been synthesized and characterized. The quadratic nonlinear properties of supramolecular dendritic or predendritic structures are reported for N = 2, 3, and 7. The Figure shows a trimetallic metallo-polyimide chromophore.
Bozec et al. (2001) studied this question.