Use of atomic force microscopy force measurements to monitor citrate displacement by amines on gold in aqueous solution

I. Larson; D. Y.C. Chan; C. J. Drummond; F. Grieser

Use of atomic force microscopy force measurements to monitor citrate displacement by amines on gold in aqueous solution

I. Larson, D. Y.C. Chan, C. J. Drummond, F. Grieser

Research output: Contribution to journal › Article › Research › peer-review

Abstract

Using an atomic force microscope, the adsorption of 4-(dimethylamino)pyridine and pyridine, in aqueous solution, onto trisodium citrate equilibrated gold has been monitored by the decrease in the electrostatic potential of the gold surface with time. Pronounced changes in the force-separation curves as a function of time were observed, with determined potential decreases in the range of 20-30 mV. The time dependent diffuse layer potentials changes have been attributed to the displacement of citrate ions on the gold surface by the more strongly adsorbing aromatic amines.

Original language	English
Pages (from-to)	2429-2431
Number of pages	3
Journal	Langmuir
Volume	13
Issue number	9
Publication status	Published - 30 Apr 1997
Externally published	Yes

Cite this

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abstract = "Using an atomic force microscope, the adsorption of 4-(dimethylamino)pyridine and pyridine, in aqueous solution, onto trisodium citrate equilibrated gold has been monitored by the decrease in the electrostatic potential of the gold surface with time. Pronounced changes in the force-separation curves as a function of time were observed, with determined potential decreases in the range of 20-30 mV. The time dependent diffuse layer potentials changes have been attributed to the displacement of citrate ions on the gold surface by the more strongly adsorbing aromatic amines.",

author = "I. Larson and Chan, {D. Y.C.} and Drummond, {C. J.} and F. Grieser",

year = "1997",

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journal = "Langmuir",

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T1 - Use of atomic force microscopy force measurements to monitor citrate displacement by amines on gold in aqueous solution

AU - Larson, I.

AU - Chan, D. Y.C.

AU - Drummond, C. J.

AU - Grieser, F.

PY - 1997/4/30

Y1 - 1997/4/30

N2 - Using an atomic force microscope, the adsorption of 4-(dimethylamino)pyridine and pyridine, in aqueous solution, onto trisodium citrate equilibrated gold has been monitored by the decrease in the electrostatic potential of the gold surface with time. Pronounced changes in the force-separation curves as a function of time were observed, with determined potential decreases in the range of 20-30 mV. The time dependent diffuse layer potentials changes have been attributed to the displacement of citrate ions on the gold surface by the more strongly adsorbing aromatic amines.

AB - Using an atomic force microscope, the adsorption of 4-(dimethylamino)pyridine and pyridine, in aqueous solution, onto trisodium citrate equilibrated gold has been monitored by the decrease in the electrostatic potential of the gold surface with time. Pronounced changes in the force-separation curves as a function of time were observed, with determined potential decreases in the range of 20-30 mV. The time dependent diffuse layer potentials changes have been attributed to the displacement of citrate ions on the gold surface by the more strongly adsorbing aromatic amines.

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M3 - Article

AN - SCOPUS:0001303902

SN - 0743-7463

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EP - 2431

JO - Langmuir

JF - Langmuir

IS - 9

ER -

Use of atomic force microscopy force measurements to monitor citrate displacement by amines on gold in aqueous solution

Abstract

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