618898-34-3

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• 618898-39-8 4,4'-bis[p-(N-ethyl-N-2-hydroxyethyl)aminostyryl]-2,2'-bipyridine 

Relevant academic research and scientific papers

Synthesis, photophysical and nonlinear optical properties of macromolecular architectures featuring octupolar tris(bipyridine) ruthenium(II) moieties: Evidence for a supramolecular self-ordering in a dentritic structure

The synthesis, photophysical and nonlinear optical properties of several new multi-octupolar tris(bipyridine) ruthenium complexes are reported. The preparation on these complexes is based on the initial construction of multipodal 4,4′-dialkylaminostyryl-2,2′-bipyridine ligands (DAAS-bpy). Thermally stable polyimides featuring octupolar ruthenium trisbipyridyl complexes have been readily obtained by a polycondensation reaction. The controlled coordination strategy of dipodal and tripodal bipyridines to ruthenium(II) has also been successfully used to build bimetallic, trimetallic as well as the first metallodendrimer made of seven metallo-octupoles. These polymetallic species exhibit very intense absorption bands in the visible and long-lived luminescence. The quadratic NLO-susceptibilities β of these macromolecules have been characterized by harmonic light scattering at 1.91 μm and compared with those of the corresponding monometallic species. The NLO studies clearly demonstrates a quasi-supramolecular ordering in the metallodendrimer.

Synthesis of a highly thermally stable octupolar polyimide for nonlinear optics

A new polyimide with covalently incorporated 4,4'-bis(dialkylaminostyryl)-2,2'-bipyridine chromophores is described which allows the synthesis of the corresponding NLO octupolar metallo-polymer.