A design for a simple gas doser, which incorporates a movable shutter, is presented. The operation of this doser is demonstrated using the dosing and subsequent temperature programmed desorption of butanethiol on Au{100}-(5×20). The sticking probability for adsorption of the butanethiol at 100 K was measured to be The butanethiol desorption showed two features corresponding to the desorption of the chemisorbed monolayer at 500 K, and physisorbed multilayers at 140 K. The chemisorbed monolayer feature was not observed in the desorption of the parent molecular ion at 90 amu, but was observed at 56 amu, suggesting that desorption was accompanied by decomposition of the chemisorbed butanethiolate species. The primary gas phase product appears to be 1-butene. Auger electron spectroscopy showed that the thiolate sulfur remained on the surface until above 700 K.
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September 1999
Research Article|
September 01 1999
Butanethiol on Au{100}-(5×20) using a simple retractable doser
St. J. Dixon-Warren;
St. J. Dixon-Warren
Department of Chemistry and Program in Materials Science, Washington State University, Pullman, Washington 99164-4630
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V. Bondzie;
V. Bondzie
Department of Chemistry and Program in Materials Science, Washington State University, Pullman, Washington 99164-4630
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N. Burson;
N. Burson
Department of Chemistry and Program in Materials Science, Washington State University, Pullman, Washington 99164-4630
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L. Lucchesi;
L. Lucchesi
Department of Chemistry and Program in Materials Science, Washington State University, Pullman, Washington 99164-4630
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Y. Yu;
Y. Yu
Department of Chemistry and Program in Materials Science, Washington State University, Pullman, Washington 99164-4630
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L. Zhang
L. Zhang
Department of Chemistry and Program in Materials Science, Washington State University, Pullman, Washington 99164-4630
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J. Vac. Sci. Technol. A 17, 2982–2986 (1999)
Article history
Received:
March 26 1998
Accepted:
March 12 1999
Citation
St. J. Dixon-Warren, V. Bondzie, N. Burson, L. Lucchesi, Y. Yu, L. Zhang; Butanethiol on Au{100}-(5×20) using a simple retractable doser. J. Vac. Sci. Technol. A 1 September 1999; 17 (5): 2982–2986. https://doi.org/10.1116/1.581970
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