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   ANM 2010
    3rd International Conference on Advanced Nano Materials
    12-15 September 2010 - Agadir, Morocco

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   Abstract


ANMM219
CHEMICAL REACTIONS OF POLYCICLIC AROMATIC HYDROCARBONS ON METAL SURFACES: BEYOND SELF ASSEMBLING
Jose A. Martín-Gago
Instituto Ciencia de Materiales de Madrid-ICMM- CSIC
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Creating or connecting together large organic molecules, as polycyclic aromatic hydrocarbons (PAH) throughout chemical reactions readily on surfaces is a preceding step for a truly advance in the field of molecular electronics. In the last decade most of the experiments were devoted to understand the structure and interactions of self-assembled monolayers on surfaces.  However, in the last years most of the efforts are focused on forming more stable arrangements. The fundamental mechanisms of these reactions can be investigated from the perspective of surface science that combines the use of characterization techniques at the nanoscale, with single-crystal metallic surfaces skilful to catalyse these reactions.  In this talk we will illustrate these ideas with different examples. Formation of Surface covalent frameworks, either by coordination reactions or by surface induced chemistry is at present a subject of high interest. We will see how the dimensionality of an assembled layer on a surface could originate systems with different properties. In these examples the surface plays an important role catalysing the reactions.
Thus, one of the most promising molecules for the molecular electronics are fullerenes and heterofullerenes readily deposited on a surface. We will show that we can synthesise fullerenes of different size and composition, by using molecular precursors and taking advantage of the catalytic properties of a surface.   Finally, and looking forward to applications we will see bio-molecules covalently bound to metallic surfaces through a thiol-motif.  Particularly we will see a basic case of cysteine on gold, and an application derived from it, self-assembled layers of DNA and PNA on gold surfaces for biosensing applications.
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