http://www.cnr.it/ontology/cnr/individuo/prodotto/ID191421

Controlling on-surface polymerization by hierarchical and substrate-directed growth (Articolo in rivista)

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Controlling on-surface polymerization by hierarchical and substrate-directed growth (Articolo in rivista) (literal)

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Alternative label

Lafferentz, L (1,3); Eberhardt, V (2); Dri, C (3); Africh, C (3); Comelli, G (3,4); Esch, F (3,5); Hecht, S (2); Grill, L (1) (2012)
Controlling on-surface polymerization by hierarchical and substrate-directed growth
in Nature chemistry (Print); NATURE PUBLISHING GROUP,, LONDON (Regno Unito)
(literal)

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Lafferentz, L (1,3); Eberhardt, V (2); Dri, C (3); Africh, C (3); Comelli, G (3,4); Esch, F (3,5); Hecht, S (2); Grill, L (1) (literal)

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1. Max Planck Soc, Fritz Haber Inst, Dept Phys Chem, D-14195 Berlin, Germany 2. Univ Berlin, Dept Chem, D-12489 Berlin, Germany 3. IOM CNR Lab TASC, I-34149 Basovizza Trieste, Italy 4. Univ Trieste, Dept Phys and CENMAT, I-34127 Trieste, Italy 5. Chemistry Department, Technische Universität München, 85748 Garching, Germany (literal)

Titolo

Controlling on-surface polymerization by hierarchical and substrate-directed growth (literal)

Abstract

A key challenge in the field of nanotechnology, in particular in the design of molecular machines, novel materials or molecular electronics, is the bottom-up construction of covalently bound molecular architectures in a well-defined arrangement. To date, only rather simple structures have been obtained because of the limitation of one-step connection processes. Indeed, for the formation of sophisticated structures, step-by-step connection of molecules is required. Here, we present a strategy for the covalent connection of molecules in a hierarchical manner by the selective and sequential activation of specific sites, thereby generating species with a programmed reactivity. This approach leads to improved network quality and enables the fabrication of heterogeneous architectures with high selectivity. Furthermore, substrate-directed growth and a preferred orientation of the molecular nanostructures are achieved on an anisotropic surface. The demonstrated control over reactivity and diffusion during covalent bond formation constitutes a promising route towards the creation of sophisticated multi-component molecular nanostructures. (literal)

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