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Volumn 111, Issue 18, 2007, Pages 6747-6752

Origins of displacement in 1-adamantanethiolate self-assembled monolayers

Author keywords

[No Author keywords available]

Indexed keywords

1-ADAMANTANETHIOLATE; INTERACTION STRENGTHS; N-DODECANETHIOLATE;

EID: 34249682580     PISSN: 19327447     EISSN: 19327455     Source Type: Journal    
DOI: 10.1021/jp065368i     Document Type: Article
Times cited : (41)

References (63)
  • 14
    • 34249659890 scopus 로고    scopus 로고
    • Mantooth, B. A. Ph.D. thesis, The Pennsylvania State University, 2005.
    • Mantooth, B. A. Ph.D. thesis, The Pennsylvania State University, 2005.
  • 18
    • 0003890160 scopus 로고    scopus 로고
    • 2nd ed, John Wiley and Sons, Inc, New York
    • Wang, J. Analytical Electrochemistry, 2nd ed.; John Wiley and Sons, Inc.: New York, 2000.
    • (2000) Analytical Electrochemistry
    • Wang, J.1
  • 19
    • 34249708251 scopus 로고    scopus 로고
    • An example of the raw data acquired by this setup is given in ref 16
    • An example of the raw data acquired by this setup is given in ref 16.
  • 20
    • 34249683082 scopus 로고    scopus 로고
    • Although the STM measurements are a convolution of both topography and conductance, the measured apparent height difference seems more likely to be due to the difference between AD and C12 molecules than the difference in conductance between AD and reorganized, cleaved sulfur atoms. However, it should be mentioned that the displacement of an AD molecule may be accompanied by the removal of one (or more) substrate atoms. One-atom-deep substrate vacancy islands are often observed with the adsorption of thiol molecules onto gold surfaces.58-61 Additionally, Au atoms at room temperature have been reported as mobile species both on bare surfaces and on surfaces with a SAM present.60,62,63 It is not possible to determine whether the displacement process displaces an AD molecule only, or an AD-Au complex with the analytical methods used here
    • 60,62,63 It is not possible to determine whether the displacement process displaces an AD molecule only, or an AD-Au complex with the analytical methods used here.
  • 28
    • 34249705119 scopus 로고    scopus 로고
    • The position of the smaller, higher-energy peak suggests the presence of a C-O functionality. When the SAMs were prepared using hexanes instead of ethanol, the smaller peak was not observed and was therefore assumed to have been a result of trace ethanol molecules trapped in the monolayer. However, the necessary carbon contribution to the C 1s peak to account for all of the observed oxygen to be considered a C-O species greatly exceeds that observed at 286.5 eV, again suggesting the presence of water in addition to solvent trapped in the monolayers.
    • The position of the smaller, higher-energy peak suggests the presence of a C-O functionality. When the SAMs were prepared using hexanes instead of ethanol, the smaller peak was not observed and was therefore assumed to have been a result of trace ethanol molecules trapped in the monolayer. However, the necessary carbon contribution to the C 1s peak to account for all of the observed oxygen to be considered a C-O species greatly exceeds that observed at 286.5 eV, again suggesting the presence of water in addition to solvent trapped in the monolayers.
  • 54
    • 34249698871 scopus 로고    scopus 로고
    • p of the two distinct cathodic peaks, indicating that there were strong intermolecular interactions between the domains of these two more similar molecules.
    • p of the two distinct cathodic peaks, indicating that there were strong intermolecular interactions between the domains of these two more similar molecules.
  • 57
    • 34249657747 scopus 로고    scopus 로고
    • We assume that the intermolecular interaction energy gain of the displacement of AD is between the interaction strength of C12 and no intermolecular interactions. The intermolecular interaction energy gain is calculated to be 17.9 kcal/mol assuming intermolecular interactions are equivalent to C12 23.67 kcal/mol, and 40.3 kcal/mol is calculated assuming there are no intermolecular interactions
    • We assume that the intermolecular interaction energy gain of the displacement of AD is between the interaction strength of C12 and no intermolecular interactions. The intermolecular interaction energy gain is calculated to be 17.9 kcal/mol assuming intermolecular interactions are equivalent to C12 (23.67 kcal/mol), and 40.3 kcal/mol is calculated assuming there are no intermolecular interactions.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.