Toposelective Electrochemical Desorption of Thiol SAMs from Neighboring Polycrystalline Gold Surfaces

Langmuir ◽  
2008 ◽  
Vol 24 (21) ◽  
pp. 12097-12101 ◽  
Author(s):  
Michal Tencer ◽  
Pierre Berini
Keyword(s):  
Gold Surfaces ◽  
Polycrystalline Gold ◽  
Thiol Sams

Atomic Composition and Morphology of Thin Films of Resveratrol Deposited on Oxidized Silicon and Polycrystalline Gold Surfaces

2019 ◽  
Vol 61 (3) ◽  
pp. 468-473 ◽  
Author(s):  
A. S. Komolov ◽  
E. F. Lazneva ◽  
N. B. Gerasimova ◽  
V. S. Sobolev ◽  
Yu. A. Panina ◽  
...  
Keyword(s):  
Thin Films ◽  
Atomic Composition ◽  
Gold Surfaces ◽  
Polycrystalline Gold

Modification of Galactitol Dehydrogenase fromRhodobacter sphaeroidesD for Immobilization on Polycrystalline Gold Surfaces

Langmuir ◽  
2009 ◽  
Vol 25 (20) ◽  
pp. 12380-12386 ◽  
Author(s):  
P. Kornberger ◽  
J. Gajdzik ◽  
H. Natter ◽  
G. Wenz ◽  
F. Giffhorn ◽  
...  
Keyword(s):  
Gold Surfaces ◽  
Polycrystalline Gold

A Photoelectron Spectroscopy Study of Ethylenedioxythiophene Adsorption on Polycrystalline Gold Surfaces

2000 ◽  
Vol 660 ◽  
Author(s):  
J. Birgerson ◽  
M. Keil ◽  
A. W. Denier van der Gon ◽  
X. Crispin ◽  
M. Lögdlund ◽  
...  
Keyword(s):  
Photoelectron Spectroscopy ◽  
Spectroscopy Study ◽  
Gold Surfaces ◽  
Polycrystalline Gold

A Photoelectron Spectroscopy Study of Ethylenedioxythiophene Adsorption on Polycrystalline Gold Surfaces

2000 ◽  
Vol 660 ◽  
Author(s):  
J. Birgerson ◽  
M. Keil ◽  
A. W. Denier van der Gon ◽  
X. Crispin ◽  
M. Lögdlund ◽  
...  
Keyword(s):  
Photoelectron Spectroscopy ◽  
Thick Films ◽  
Gold Surface ◽  
Deposition Process ◽  
Binding Energies ◽  
Gold Surfaces ◽  
Copper Surfaces ◽  
The Core ◽  
Metal Atoms ◽  
Polycrystalline Gold

ABSTRACTThe interaction between thin films of ethylenedioxythiophene (EDOT) and polycrystalline copper and gold surfaces has been studied using photoelectron spectroscopy. Thick films of EDOT (∼100 Å) have been prepared by vapor deposition onto clean gold surfaces, which were cooled down to a temperature of 170 K during the deposition process. Monolayers were prepared by slowly heating the thick films up to 300 K. At 300 K most of the material has evaporated from the surface and about one monolayer remains chemisorbed on the gold surface. This shows that there is an interaction between EDOT and Au. This chemisorption causes a shift of around -0.5 eV of the binding energies for the core level electrons, presumably because of screening of the core-hole by the metal. An experimental and theoretical analysis of the valence level electrons suggests that two molecular orbitals, localized at the thiophene part of the molecule, are involved in the interaction with the metal atoms of the surface. The most likely orientation of the EDOT molecules is parallel to the Au surface. Upon adsorption the work function is changed from 5.2 eV for the clean gold surface to 4.0 eV for the EDOT monolayer. In the case of EDOT adsorbed on clean copper surfaces, no interaction was observed.

scholarly journals Electrochemical Study of Biotin-Modified Self-Assembled Monolayers: Recommendations for Robust Preparation

2006 ◽  
Vol 6 ◽  
pp. 20-29 ◽  
Author(s):  
Richard J.C. Brown ◽  
Dan J.L. Brett
Keyword(s):  
Cyclic Voltammetry ◽  
Impedance Spectroscopy ◽  
Self Assembled Monolayers ◽  
Gold Surfaces ◽  
Precursor Molecule ◽  
End Groups ◽  
Assembled Monolayers ◽  
Polycrystalline Gold ◽  
Self Assembled ◽  
First Time

The development of the underpinning methodology for the production of robust, well-formed, and densely packed biotin-HPDP functionalised gold surfaces, the crucial first step in immobilising bimolecules on surfaces, is described. Self-assembled monolayers (SAMs) with biotin end-groups were prepared on polycrystalline gold surfaces according to a published method. The layers formed were studied using cyclic voltammetry to determine the composition of the layer and its quality. Crystal impedance spectroscopy was also applied as a complimentary indicator of the composition of the layer.For the first time, the effect of assembly time on the properties of the layer was studied along with the composition of the layer and the ability of the precursor molecule to self-assemble by oxidative addition.

Cobalt salen functionalised polycrystalline gold surfaces

2008 ◽  
Vol 516 (10) ◽  
pp. 2948-2956 ◽  
Author(s):  
Minna T. Räisänen ◽  
Pedro de Almeida ◽  
Kristoffer Meinander ◽  
Marianna Kemell ◽  
Ilpo Mutikainen ◽  
...  
Keyword(s):  
Gold Surfaces ◽  
Polycrystalline Gold
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