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Statements

Subject Item
n2:RIV%2F61388963%3A_____%2F13%3A00396255%21RIV14-AV0-61388963
rdf:type
skos:Concept n10:Vysledek
dcterms:description
The formation of nonelectroactive self-assembled monolayers (SAMs) at the electrode/electrolyte interface was characterized with simultaneous impedance, gravimetric, and direct current measurements. In the presence of specifically adsorbing inorganic ions, this provides key information about the formation of SAMs. Gravimetric measurements allow an estimation of the adsorbate surface coverage; and completion of the assembly process can then be monitored in real-time. Electrochemical impedance spectroscopy measurements play a multifunctional role: they enable elucidation of the physical models of the interface, provide the information about the effective capacitance of SAMs thus probing the dielectric properties of the adsorbed layers, and evaluate the ability of charged electrolyte components to approach the electrode surface through the SAM (using adsorbing/desorbing SO42- as an electroactive probe). The latter is important to assess the extent of defects in the formed organic layers. Finally, monitoring the direct current during SAM formation together with the collected gravimetric data can give additional important information about the process. A series of n-mercaptoalcohols with different hydrocarbon chain length adsorbing at Au electrodes was used as the model object to evaluate the proposed approach. The formation of nonelectroactive self-assembled monolayers (SAMs) at the electrode/electrolyte interface was characterized with simultaneous impedance, gravimetric, and direct current measurements. In the presence of specifically adsorbing inorganic ions, this provides key information about the formation of SAMs. Gravimetric measurements allow an estimation of the adsorbate surface coverage; and completion of the assembly process can then be monitored in real-time. Electrochemical impedance spectroscopy measurements play a multifunctional role: they enable elucidation of the physical models of the interface, provide the information about the effective capacitance of SAMs thus probing the dielectric properties of the adsorbed layers, and evaluate the ability of charged electrolyte components to approach the electrode surface through the SAM (using adsorbing/desorbing SO42- as an electroactive probe). The latter is important to assess the extent of defects in the formed organic layers. Finally, monitoring the direct current during SAM formation together with the collected gravimetric data can give additional important information about the process. A series of n-mercaptoalcohols with different hydrocarbon chain length adsorbing at Au electrodes was used as the model object to evaluate the proposed approach.
dcterms:title
Multiparametric Characterization of Nonelectroactive Self-Assembled Monolayers During Their Formation Multiparametric Characterization of Nonelectroactive Self-Assembled Monolayers During Their Formation
skos:prefLabel
Multiparametric Characterization of Nonelectroactive Self-Assembled Monolayers During Their Formation Multiparametric Characterization of Nonelectroactive Self-Assembled Monolayers During Their Formation
skos:notation
RIV/61388963:_____/13:00396255!RIV14-AV0-61388963
n10:predkladatel
n11:ico%3A61388963
n3:aktivita
n13:I
n3:aktivity
I
n3:cisloPeriodika
31
n3:dodaniDat
n9:2014
n3:domaciTvurceVysledku
Kokoschka, Malte
n3:druhVysledku
n12:J
n3:duvernostUdaju
n16:S
n3:entitaPredkladatele
n17:predkladatel
n3:idSjednocenehoVysledku
90126
n3:idVysledku
RIV/61388963:_____/13:00396255
n3:jazykVysledku
n6:eng
n3:klicovaSlova
electrochemical impedance spectroscopy; quartz-crystal microbalance; single-crystal; gold electrodes
n3:klicoveSlovo
n4:single-crystal n4:quartz-crystal%20microbalance n4:gold%20electrodes n4:electrochemical%20impedance%20spectroscopy
n3:kodStatuVydavatele
US - Spojené státy americké
n3:kontrolniKodProRIV
[DF1409C203B2]
n3:nazevZdroje
Langmuir
n3:obor
n15:CF
n3:pocetDomacichTvurcuVysledku
1
n3:pocetTvurcuVysledku
3
n3:rokUplatneniVysledku
n9:2013
n3:svazekPeriodika
29
n3:tvurceVysledku
Henry, J. B. Kokoschka, Malte Bandarenka, A. S.
n3:wos
000323014200036
s:issn
0743-7463
s:numberOfPages
9
n14:doi
10.1021/la400749m