Matches in SemOpenAlex for { <https://semopenalex.org/work/W2015336522> ?p ?o ?g. }
- W2015336522 endingPage "4595" @default.
- W2015336522 startingPage "4590" @default.
- W2015336522 abstract "4,4'-Dithiodipyridine (PySSPy) monolayers on Au(111) were investigated by cyclic voltammetry, X-ray photoelectron spectroscopy (XPS) and in situ scanning tunneling microscopy (STM). The studies were performed in solutions of different anions and pHs (0.1 M H2SO4, 0.1 M HClO4, 0.1 and 0.01 M Na2SO4, 0.1 and 0.01 M NaOH). The cyclic current-potential curves in H2SO4 show current peaks at about 0.4 V, which are absent for all other electrolytes at this potential. The XPS data suggest that PySSPy adsorbs via the S endgroup on the gold surface and the S-S bond breaks during adsorption. From the chemical shift of the N(ls) peak, it is concluded that in acidic media the self-assembled monolayer (SAM) is fully protonated, whereas in basic solution it is not. The pKa is estimated to be 5.3. STM studies reveal the existence of highly ordered superstructures for the SAM. In Na2SO4 and H2SO4, a (7 x mean square root of 3) structure is proposed. However, whereas in Na2SO4 solutions the superstructure does not change with potential, in 0.1 M H2SO4 the superstructure is observed only negative of the current peak at +0.4 V. At more positive potentials, the film becomes disordered. The results are compared to those for 4-mercaptopyridine (PyS) SAMs. XPS experiments and current-potential curves indicate that both molecules adsorb in the same manner on Au(111), that is, even in the case of PySSPy the adspecies is PyS. The STM results, however, call for a more subtle interpretation. While in Na2SO4 solutions the observed superstructures are the same for both SAMs, markedly different structures are found for PySSPy and PyS SAMs in 0.1 M H2SO4." @default.
- W2015336522 created "2016-06-24" @default.
- W2015336522 creator A5000162951 @default.
- W2015336522 creator A5034435103 @default.
- W2015336522 creator A5042490832 @default.
- W2015336522 creator A5086876738 @default.
- W2015336522 date "2004-04-28" @default.
- W2015336522 modified "2023-09-26" @default.
- W2015336522 title "Structure and Electrochemistry of 4,4‘-Dithiodipyridine Self-Assembled Monolayers in Comparison with 4-Mercaptopyridine Self-Assembled Monolayers on Au(111)" @default.
- W2015336522 cites W1577910476 @default.
- W2015336522 cites W1964761900 @default.
- W2015336522 cites W1968290539 @default.
- W2015336522 cites W1975344384 @default.
- W2015336522 cites W1978475997 @default.
- W2015336522 cites W1981976820 @default.
- W2015336522 cites W1985170759 @default.
- W2015336522 cites W1989111258 @default.
- W2015336522 cites W1989172362 @default.
- W2015336522 cites W1990368636 @default.
- W2015336522 cites W1991520960 @default.
- W2015336522 cites W1992686506 @default.
- W2015336522 cites W2003982588 @default.
- W2015336522 cites W2007240039 @default.
- W2015336522 cites W2012108233 @default.
- W2015336522 cites W2016145177 @default.
- W2015336522 cites W2016988761 @default.
- W2015336522 cites W2017241258 @default.
- W2015336522 cites W2019875763 @default.
- W2015336522 cites W2026739393 @default.
- W2015336522 cites W2027158361 @default.
- W2015336522 cites W2031383629 @default.
- W2015336522 cites W2031471445 @default.
- W2015336522 cites W2033516158 @default.
- W2015336522 cites W2036612800 @default.
- W2015336522 cites W2040794312 @default.
- W2015336522 cites W2042386191 @default.
- W2015336522 cites W2043369583 @default.
- W2015336522 cites W2045044725 @default.
- W2015336522 cites W2045725637 @default.
- W2015336522 cites W2060526993 @default.
- W2015336522 cites W2063183661 @default.
- W2015336522 cites W2065736619 @default.
- W2015336522 cites W2065867670 @default.
- W2015336522 cites W2069099100 @default.
- W2015336522 cites W2072347621 @default.
- W2015336522 cites W2073653639 @default.
- W2015336522 cites W2074295413 @default.
- W2015336522 cites W2074374586 @default.
- W2015336522 cites W2076271370 @default.
- W2015336522 cites W2076603691 @default.
- W2015336522 cites W2079798995 @default.
- W2015336522 cites W2080464773 @default.
- W2015336522 cites W2080916701 @default.
- W2015336522 cites W2081219108 @default.
- W2015336522 cites W2085036446 @default.
- W2015336522 cites W2086834206 @default.
- W2015336522 cites W2087812087 @default.
- W2015336522 cites W2087925878 @default.
- W2015336522 cites W2089551376 @default.
- W2015336522 cites W2094100179 @default.
- W2015336522 cites W2095419468 @default.
- W2015336522 cites W2102414202 @default.
- W2015336522 cites W2105202307 @default.
- W2015336522 cites W2120645381 @default.
- W2015336522 cites W2134819724 @default.
- W2015336522 cites W2136121101 @default.
- W2015336522 cites W2160707406 @default.
- W2015336522 cites W2312839838 @default.
- W2015336522 cites W2323563659 @default.
- W2015336522 cites W2603140269 @default.
- W2015336522 cites W4232720407 @default.
- W2015336522 cites W4233457261 @default.
- W2015336522 doi "https://doi.org/10.1021/la049903m" @default.
- W2015336522 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/15969169" @default.
- W2015336522 hasPublicationYear "2004" @default.
- W2015336522 type Work @default.
- W2015336522 sameAs 2015336522 @default.
- W2015336522 citedByCount "79" @default.
- W2015336522 countsByYear W20153365222012 @default.
- W2015336522 countsByYear W20153365222013 @default.
- W2015336522 countsByYear W20153365222014 @default.
- W2015336522 countsByYear W20153365222015 @default.
- W2015336522 countsByYear W20153365222016 @default.
- W2015336522 countsByYear W20153365222017 @default.
- W2015336522 countsByYear W20153365222018 @default.
- W2015336522 countsByYear W20153365222019 @default.
- W2015336522 countsByYear W20153365222020 @default.
- W2015336522 countsByYear W20153365222021 @default.
- W2015336522 countsByYear W20153365222022 @default.
- W2015336522 countsByYear W20153365222023 @default.
- W2015336522 crossrefType "journal-article" @default.
- W2015336522 hasAuthorship W2015336522A5000162951 @default.
- W2015336522 hasAuthorship W2015336522A5034435103 @default.
- W2015336522 hasAuthorship W2015336522A5042490832 @default.
- W2015336522 hasAuthorship W2015336522A5086876738 @default.
- W2015336522 hasConcept C111368507 @default.
- W2015336522 hasConcept C113196181 @default.
- W2015336522 hasConcept C127313418 @default.