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Theoretical studies on the functionalisation of metal surfaces with organic and biological complexes under electrochemical conditions

Ziel

The aim of this project is to understand the mechanisms behind the functionalisation of metal surfaces with organic and biological
complexes under realistic electrochemical conditions. Focusing on low-index surfaces of gold and platinum, which are also the
electrodes in corresponding experiments, we will use a series of theoretical methods applicable for different time- and lengthsscales
to investigate the geometry and electronic properties of different complexes attached to these electrodes as function of the
surrounding (e.g. electrolyte) and the environmental conditions: temperature, pressure/concentrations, and electrode potential. As
complexes we will consider small organic molecules such as 4-mercaptopyridine, 4-ATP, or alkane-chains of variable length, as
well as biological complexes, i.e. DNA-sequences.
Within the first step we will establish a deeper understanding of how these complexes interact with the metal electrodes and how
adlayer structures can be manipulated by applying specific temperature, pressure, or potential-conditions. Since the intermolecular
interactions are rather weak, the presence of the external electrode potential could lead to drastic changes of the interfacial
morphology. In this respect, particular attention will be spend to the highly-reversible folding and unfolding of DNA-sequences,
which has recently had been realized experimentally.
Based on thus functionalized electrode surfaces, we will investigate their potential as templates for growing nanoparticles of
desired size and shape, which would allow for bridging the gap between well-defined single crystal surfaces and nanoparticles. It
is now a matter of establishing the predictive capacity for these methods, an expansive process that itself will open new doors of
research.

Aufforderung zur Vorschlagseinreichung

ERC-2010-StG_20091028
Andere Projekte für diesen Aufruf anzeigen

Gastgebende Einrichtung

UNIVERSITAET ULM
EU-Beitrag
€ 1 409 400,00
Adresse
HELMHOLTZSTRASSE 16
89081 Ulm
Deutschland

Auf der Karte ansehen

Region
Baden-Württemberg Tübingen Ulm, Stadtkreis
Aktivitätstyp
Higher or Secondary Education Establishments
Hauptforscher
Timo Jacob (Dr.)
Kontakt Verwaltung
Michaela Schuhmacher (Mrs.)
Links
Gesamtkosten
Keine Daten

Begünstigte (1)