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Highly anisotropic TiO 2 nanostructures (see Figure) of several hundreds of nanometers in length were obtained by oriented assembly of preformed TiO 2 nanoparticles with typical diameters of 5 nm. The assembly is directed by a particularly small amount of a polydentate ligand with a low molecular weight, which binds selectively to specific crystal faces of the titania nanoparticles.
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Polleux et al. (2004) studied this question.
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