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dc.contributor.authorVikulina, Anna S
dc.contributor.authorAnissimov, Yuri G
dc.contributor.authorSingh, Prateek
dc.contributor.authorProkopovic, Vladimir Z
dc.contributor.authorUhlig, Katja
dc.contributor.authorJaeger, Magnus S
dc.contributor.authorvon Klitzing, Regine
dc.contributor.authorDuschl, Claus
dc.contributor.authorVolodkin, Dmitry
dc.date.accessioned2018-09-20T05:57:56Z
dc.date.available2018-09-20T05:57:56Z
dc.date.issued2016
dc.identifier.issn1463-9076
dc.identifier.doi10.1039/c6cp00345a
dc.identifier.urihttp://hdl.handle.net/10072/142532
dc.description.abstractIn this study, the effect of temperature on the build-up of exponentially growing polyelectrolyte multilayer films was investigated. It aims at understanding the multilayer growth mechanism as crucially important for the fabrication of tailor-made multilayer films. Model poly(L-lysine)/hyaluronic acid (PLL/HA) multilayers were assembled in the temperature range of 25–85 °C by layer-by-layer deposition using a dipping method. The film growth switches from the exponential to the linear regime at the transition point as a result of limited polymer diffusion into the film. With the increase of the build-up temperature the film growth rate is enhanced in both regimes; the position of the transition point shifts to a higher number of deposition steps confirming the diffusion-mediated growth mechanism. Not only the faster polymer diffusion into the film but also more porous/permeable film structure are responsible for faster film growth at higher preparation temperature. The latter mechanism is assumed from analysis of the film growth rate upon switching of the preparation temperature during the film growth. Interestingly, the as-prepared films are equilibrated and remain intact (no swelling or shrinking) during temperature variation in the range of 25–45 °C. The average activation energy for complexation between PLL and HA in the multilayers calculated from the Arrhenius plot has been found to be about 0.3 kJ mol−1 for monomers of PLL. Finally, the following processes known to be dependent on temperature are discussed with respect to the multilayer growth: (i) polymer diffusion, (ii) polymer conformational changes, and (iii) inter-polymer interactions.
dc.description.peerreviewedYes
dc.languageEnglish
dc.publisherRoyal Society of Chemistry
dc.relation.ispartofpagefrom7866
dc.relation.ispartofpageto7874
dc.relation.ispartofissue11
dc.relation.ispartofjournalPhysical Chemistry Chemical Physics
dc.relation.ispartofvolume18
dc.subject.fieldofresearchAtomic, Molecular, Nuclear, Particle and Plasma Physics not elsewhere classified
dc.subject.fieldofresearchPhysical Sciences
dc.subject.fieldofresearchChemical Sciences
dc.subject.fieldofresearchcode020299
dc.subject.fieldofresearchcode02
dc.subject.fieldofresearchcode03
dc.titleTemperature effect on the build-up of exponentially growing polyelectrolyte multilayers. An exponential-to-linear transition point
dc.typeJournal article
dc.type.descriptionC1 - Articles
dc.type.codeC - Journal Articles
dcterms.licensehttps://creativecommons.org/licenses/by/3.0/
dc.description.versionPublished
gro.rights.copyright© The Author(s) 2016. This is an Open Access article distributed under the terms of the Creative Commons Attribution 3.0 Unported (CC BY 3.0) License (https://creativecommons.org/licenses/by/3.0/) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
gro.hasfulltextFull Text
gro.griffith.authorAnissimov, Yuri G.


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