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Titolo:
High-resolution X-ray photoelectron spectra of organosulfur monolayers on Au(111): S(2p) spectral dependence on molecular species
Autore:
Ishida, T; Choi, N; Mizutani, W; Tokumoto, H; Kojima, I; Azehara, H; Hokari, H; Akiba, U; Fujihira, M;
Indirizzi:
JRCAT, ATP, Ibaraki, Osaka 3050046, Japan JRCAT Ibaraki Osaka Japan 3050046 CAT, ATP, Ibaraki, Osaka 3050046, Japan JRCAT, NAIR, Natl Inst Adv Interdisciplinary Res, Tsukuba, Ibaraki 3058562, Japan JRCAT Tsukuba Ibaraki Japan 3058562 Res, Tsukuba, Ibaraki 3058562, Japan Natl Inst Mat & Chem Res, NIMC, Tsukuba, Ibaraki 3058565, Japan Natl Inst Mat & Chem Res Tsukuba Ibaraki Japan 3058565 aki 3058565, Japan Tokyo Inst Technol, Fac Biosci & Biotechnol, Dept Biomol Engn, Midori Ku, Yokohama, Kanagawa 2268501, Japan Tokyo Inst Technol Yokohama Kanagawa Japan 2268501 anagawa 2268501, Japan Electrotech Lab, Ibaraki, Osaka 3058568, Japan Electrotech Lab Ibaraki Osaka Japan 3058568 Ibaraki, Osaka 3058568, Japan
Titolo Testata:
LANGMUIR
fascicolo: 20, volume: 15, anno: 1999,
pagine: 6799 - 6806
SICI:
0743-7463(19990928)15:20<6799:HXPSOO>2.0.ZU;2-T
Fonte:
ISI
Lingua:
ENG
Soggetto:
SELF-ASSEMBLED MONOLAYERS; SCANNING-TUNNELING-MICROSCOPY; SULFUR BOND-CLEAVAGE; ALKANETHIOL MONOLAYERS; PHASE-SEPARATION; THIOL MONOLAYERS; EVAPORATED GOLD; DISULFIDES; SPECTROSCOPY; SURFACES;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
65
Recensione:
Indirizzi per estratti:
Citazione:
T. Ishida et al., "High-resolution X-ray photoelectron spectra of organosulfur monolayers on Au(111): S(2p) spectral dependence on molecular species", LANGMUIR, 15(20), 1999, pp. 6799-6806

Abstract

We have used high-resolution X-ray photoelectron spectroscopy (XPS) to investigate the molecular dependence on sulfur chemical states of organosulfurmonolayers of alkanethiol, dialkyl disulfide, monosulfide, thiophene, and aromatic thiols on a Au(lll) surface. When monosulfides or thiophenes adsorbed on the Au surface, the S(2p) peaks appeared between 161 and 164 eV, andpeak fitting revealed that these organosulfurs exhibited almost the same peaks as those of alkanethiol and dialklyl disulfide monolayers. The monolayer made from monosulfide with shorter alkyl chains exhibited almost the same S(2p) XPS spectrum as the typical alkanethiol or dialkyl disulfide monolayers. Another S(2p(3/2)) peak appeared for aromatic derivatized thiol SAMs at around 161 eV, in addition to strong doublet S(2p) peak observed at 162.0 and 163.3 eV in the S(2p) spectra. The 161 eV peak was observed even in the S(2p) XPS spectra of alkanethiol or dialkyl disulfide monolayers, at theinitial stage of monolayer growth or after low-temperature (similar to 100degrees C) annealing of low molecular density alkanethiol SAMs. We consider that this 161 eV peak can be formed without molecular decomposition as well as due to the atomic sulfur produced by C-S cleavage.

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Documento generato il 25/11/20 alle ore 04:34:58