Single molecule observations of fatty acid adsorption at the silica/water interface : activation energy of attachment

Honciuc, Andrei; Howard, Alexander L.; Schwartz, Daniel K.

doi:10.1021/jp8051856

Full metadata record

DC Field	Value	Language
dc.contributor.author	Honciuc, Andrei	-
dc.contributor.author	Howard, Alexander L.	-
dc.contributor.author	Schwartz, Daniel K.	-
dc.date.accessioned	2018-12-11T15:44:50Z	-
dc.date.available	2018-12-11T15:44:50Z	-
dc.date.issued	2008	-
dc.identifier.issn	1932-7447	de_CH
dc.identifier.issn	1932-7455	de_CH
dc.identifier.uri	https://digitalcollection.zhaw.ch/handle/11475/13742	-
dc.description.abstract	Total internal reflection fluorescence microscopy was used to obtain real-time images of individual fluorescently labeled hexadecanoic acid molecules as they absorbed at the aqueous-fused silica interface. In contrast with laterally averaged ensemble measurements of surface coverage versus time, single-molecule observations provide direct, model-independent measurements of adsorption kinetics. Additionally, since the observations were made under steady-state conditions at extremely low coverage, effects due to transport kinetics did not influence the results, permitting accurate measurement of the fundamental attachment rate as a function of temperature, that is, the rate at which molecules are transferred to the surface from the subsurface layer. We found that the attachment rate systematically increased with increasing temperature; an Arrhenius analysis gave an activation energy of Ea = 19 ± 2 kJ/mol. We hypothesize that this energy, which is similar in magnitude to the strength of an OH···O hydrogen bond, is associated with the displacement of a water molecule from the silica surface.	de_CH
dc.language.iso	en	de_CH
dc.publisher	American Chemical Society	de_CH
dc.relation.ispartof	The Journal of Physical Chemistry C	de_CH
dc.rights	Licence according to publishing contract	de_CH
dc.subject.ddc	540: Chemie	de_CH
dc.title	Single molecule observations of fatty acid adsorption at the silica/water interface : activation energy of attachment	de_CH
dc.type	Beitrag in wissenschaftlicher Zeitschrift	de_CH
dcterms.type	Text	de_CH
zhaw.departement	Life Sciences und Facility Management	de_CH
zhaw.organisationalunit	Institut für Chemie und Biotechnologie (ICBT)	de_CH
dc.identifier.doi	10.1021/jp8051856	de_CH
zhaw.funding.eu	No	de_CH
zhaw.issue	6	de_CH
zhaw.originated.zhaw	No	de_CH
zhaw.pages.end	2081	de_CH
zhaw.pages.start	2078	de_CH
zhaw.publication.status	publishedVersion	de_CH
zhaw.volume	113	de_CH
zhaw.publication.review	Peer review (Publikation)	de_CH
Appears in collections:	Publikationen Life Sciences und Facility Management

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Honciuc, A., Howard, A. L., & Schwartz, D. K. (2008). Single molecule observations of fatty acid adsorption at the silica/water interface : activation energy of attachment. The Journal of Physical Chemistry C, 113(6), 2078–2081. https://doi.org/10.1021/jp8051856

Honciuc, A., Howard, A.L. and Schwartz, D.K. (2008) ‘Single molecule observations of fatty acid adsorption at the silica/water interface : activation energy of attachment’, The Journal of Physical Chemistry C, 113(6), pp. 2078–2081. Available at: https://doi.org/10.1021/jp8051856.

A. Honciuc, A. L. Howard, and D. K. Schwartz, “Single molecule observations of fatty acid adsorption at the silica/water interface : activation energy of attachment,” The Journal of Physical Chemistry C, vol. 113, no. 6, pp. 2078–2081, 2008, doi: 10.1021/jp8051856.

HONCIUC, Andrei, Alexander L. HOWARD und Daniel K. SCHWARTZ, 2008. Single molecule observations of fatty acid adsorption at the silica/water interface : activation energy of attachment. The Journal of Physical Chemistry C. 2008. Bd. 113, Nr. 6, S. 2078–2081. DOI 10.1021/jp8051856

Honciuc, Andrei, Alexander L. Howard, and Daniel K. Schwartz. 2008. “Single Molecule Observations of Fatty Acid Adsorption at the Silica/Water Interface : Activation Energy of Attachment.” The Journal of Physical Chemistry C 113 (6): 2078–81. https://doi.org/10.1021/jp8051856.

Honciuc, Andrei, et al. “Single Molecule Observations of Fatty Acid Adsorption at the Silica/Water Interface : Activation Energy of Attachment.” The Journal of Physical Chemistry C, vol. 113, no. 6, 2008, pp. 2078–81, https://doi.org/10.1021/jp8051856.