A supramolecular propeller: A trinuclear EuIII helix with six chiral bipyridine-carboxylate ligands self-assembles with complete diastereoselectivity (see graphic; Eu green, O red, N blue). Ground- and excited-state chiroptical properties of this red-emissive complex reflect the helical arrangement of the ligands around the metallic core.
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Mamula et al. (2005) studied this question.
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