A Comparative Study of Adsorption of Aliphatic Amines at a Gold Electrode

2005 ◽  
Vol 70 (12) ◽  
pp. 2027-2037 ◽  
Author(s):  
Teresa Łuczak
Keyword(s):  
Gibbs Energy ◽  
Comparative Study ◽  
Gold Electrode ◽  
Surface Coverage ◽  
Standard Gibbs Energy ◽  
Gold Surface ◽  
Experimental Dependence ◽  
Aliphatic Amines ◽  
Solvent Interactions ◽  
Amine Concentration

Adsorption of aliphatic amines (C1-C4) at the gold electrode was studied by tensammetry. It has been established that the experimental dependence between the gold surface coverage (Θ) and the bulk amine concentration (cA) fits satisfactorily both by the Frumkin and Flory-Huggins isotherms. The standard Gibbs energy of adsorption, ∆G°ad at Emax for Θ < 0.8 has been found to increase in the order methylamine < ethylamine < propylamine < butylamine. This is rationalised in terms of surface-adsorbate, adsorbate-adsorbate and adsorbate-solvent interactions.

Relationship between SERS Intensity and Both Surface Coverage and Morphology for Pyrazine Adsorbed on a Polycrystalline Gold Electrode

Langmuir ◽  
1998 ◽  
Vol 14 (2) ◽  
pp. 517-527 ◽  
Author(s):  
A. G. Brolo ◽  
D. E. Irish ◽  
G. Szymanski ◽  
J. Lipkowski
Keyword(s):  
Gold Electrode ◽  
Surface Coverage ◽  
Polycrystalline Gold ◽  
Sers Intensity

Copper-Complexed Pirouetting [2]pseudorotaxanes with Sulfur-Containing End-Groups Attached to the Thread: Synthesis, Electrochemical Studies, and Deposition on Gold Electrodes

2009 ◽  
Vol 62 (10) ◽  
pp. 1231 ◽  
Author(s):  
Jean-Paul Collin ◽  
Pierre Mobian ◽  
Jean-Pierre Sauvage ◽  
Angélique Sour ◽  
Yi-Ming Yan ◽  
...  
Keyword(s):  
Fast Moving ◽  
Gold Electrode ◽  
Gold Surface ◽  
Gold Electrodes ◽  
Electrochemical Studies ◽  
End Groups ◽  
Sulfur Containing

Two copper [2]pseudorotaxanes incorporating a macrocycle with two chelating sites (2,9-diphenyl-1,10-phenanthroline and 2,2′,6′,2″-terpyridine) and a thread based on crescent-shaped 2,2′-bipyridine derivatives have been synthesized and characterized. One of the threads was a hindering 2,2′-bipyridine functionalized by two thioctic-ended arms. The second thread was an 8,8′-diphenyl-3,3′-biisoquinoline functionalized by two thioether-ended arms. The electrochemical studies of the two copper [2]pseudorotaxanes, both in solution and anchored on a gold surface, showed only fast-moving systems in solution. The reasons of the inertness of the deposited complexes on gold electrode have been explored.

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