DOI: 10.1143/jjap.35.5866. Thermal Desorption Spectroscopy of Alkanethiol Self-Assembled Monolayer on Au(111)

Thermal Desorption Spectroscopy of Alkanethiol Self-Assembled Monolayer on Au(111)

10.1143/jjap.35.5866

Crossref journal-article

IOP Publishing

Japanese Journal of Applied Physics (266)

Abstract

The adsorption and desorption of octadecanethiol ( CH3(CH2)17SH: monomer) self-assembled monolayers (SAMs) on Au(111) have been investigated by thermal desorption spectroscopy (TDS). Two desorption peaks of dioctadecyl disulfide ( (CH3(CH2)17S)2 +: dimer+) exhibiting different sticking behaviors have been identified in the TDS spectra, while the desorption of octadecanethiol ( CH3(CH2)17SH+: monomer+) occurred at a lower temperature than that of the dimer+. The desorption activation energy and the pre-exponential factor for each peak were estimated assuming first- and second-order reactions. The analysis results suggest that both alkyl thiolate (RS–Au) with strong chemisorption and dialkyl disulfide (RS–SR: dimer) with relatively weak adsorption co-exist in the alkanethiol SAM on Au. The total amount of relatively weakly adsorbed dimers increased appreciably in a slow reaction step, while the monolayer thickness remained almost constant after SAM formation. This result suggests that dimer molecules are formed in the monolayer. This formation of weakly adsorbed dimers is strongly related to the self-exchange phenomena in SAM films reported by Schlenoff et al.. [J. Am. Chem. Soc. 117 (1995) 12528].

Bibliography

Nishida, N., Hara, M., Hiroyuki Sasabe, H. S., & Wolfgang Knoll, W. K. (1996). Thermal Desorption Spectroscopy of Alkanethiol Self-Assembled Monolayer on Au(111). Japanese Journal of Applied Physics, 35(11R), 5866.

Authors 4

Naoki Nishida (first)
Masahiko Hara (additional)
Hiroyuki Sasabe Hiroyuki Sasabe (additional)
Wolfgang Knoll Wolfgang Knoll (additional)

References 18 Referenced 102

{'year': '1991', 'key': ''} (1991)
10.1126/science.266.5188.1216 / Science (1994)
10.1021/j100010a042 / J. Phys. Chem. (1995)
10.1021/la00018a034 / Langmuir (1994)
10.1143/JJAP.35.L799 / Jpn. J. Appl. Phys. (1996)
{'key': ''}
10.1021/ja00183a049 / J. Am. Chem. Soc. (1989)
10.1007/978-3-662-08009-2 (1991)
10.1016/0042-207X(62)90978-8 / Vacuum (1962)
10.1021/ja00237a017 / J. Am. Chem. Soc. (1987)
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10.1007/BF00620732 / Appl. Phys. A (1986)
10.1021/la00032a005 / Langmuir (1993)
10.1007/BF00331545 / Appl. Phys. A (1991)
10.1021/ja00074a004 / J. Am. Chem. Soc. (1993)
10.1016/0022-0728(95)04056-T / J. Electroanal. Chem. (1995)
10.1103/PhysRevLett.69.1568 / Phys. Rev. Lett. (1992)
10.1021/ja00155a016 / J. Am. Chem. Soc. (1995)

Dates

Type	When
Created	22 years, 10 months ago (Oct. 1, 2002, 5:03 p.m.)
Deposited	2 years, 8 months ago (Dec. 7, 2022, 1:20 p.m.)
Indexed	6 months ago (Feb. 21, 2025, 5:32 a.m.)
Issued	28 years, 9 months ago (Nov. 1, 1996)
Published	28 years, 9 months ago (Nov. 1, 1996)
Published Print	28 years, 9 months ago (Nov. 1, 1996)

Funders 0

None

BibTeX

@article{Nishida_1996, title={Thermal Desorption Spectroscopy of Alkanethiol Self-Assembled Monolayer on Au(111)}, volume={35}, ISSN={1347-4065}, url={http://dx.doi.org/10.1143/jjap.35.5866}, DOI={10.1143/jjap.35.5866}, number={11R}, journal={Japanese Journal of Applied Physics}, publisher={IOP Publishing}, author={Nishida, Naoki and Hara, Masahiko and Hiroyuki Sasabe, Hiroyuki Sasabe and Wolfgang Knoll, Wolfgang Knoll}, year={1996}, month=nov, pages={5866} }

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