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dc.contributor.authorMacovez, Roberto
dc.contributor.authorMitsari, Efstratia
dc.contributor.authorZachariah, Manesh
dc.contributor.authorRomanini, Michela
dc.contributor.authorZygouri, Panagiota
dc.contributor.authorGournis, Dimitrios
dc.contributor.authorTamarit Mur, José Luis
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Física i Enginyeria Nuclear
dc.date.accessioned2014-06-16T11:43:42Z
dc.date.created2014-03-06
dc.date.issued2014-03-06
dc.identifier.citationMacovez, R. [et al.]. Ultraslow dynamics of water in organic molecular solids. "The journal of physical chemistry. Part C, nanomaterials and interfaces", 06 Març 2014, vol. 118, núm. 9, p. 4941-4950.
dc.identifier.issn1932-7447
dc.identifier.urihttp://hdl.handle.net/2117/23230
dc.description.abstractThe relaxation dynamics of water in hygroscopic molecular solids is probed by broadband dielectric spectroscopy in the temperature range from 200 to 450 K. Evidence is found for three types of dynamic processes. The intermediate process is common to all probed materials and is associated with the reorientation of bound water molecules that are attached directly onto organic molecules and counterions. A faster process is observed in rhodamine chloride and fullerol, which is the dynamic signature of water in higher hydration layers, either at grain boundaries (rhodamine) or in interstitial clusters (fullerol). All these processes are observed near room temperature and exhibit nonmonotonic temperature dependence and decreasing spectral strength upon heating. In fullerol a third, ultraslow relaxation is observed at high temperature, which may be due to the reorientation of water-fullerol complexes or to the diffusion of water vapor through intermolecular voids.
dc.format.extent10 p.
dc.language.isoeng
dc.rightsAttribution-NonCommercial-NoDerivs 3.0 Spain
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.subjectÀrees temàtiques de la UPC::Enginyeria química::Química física
dc.subjectÀrees temàtiques de la UPC::Física::Física molecular
dc.subject.lcshMolecules
dc.subject.lcshOrganic compounds
dc.subject.otherDielectric-Spectroscopy
dc.subject.otherAqueous-Solutions: Protein
dc.subject.otherRelaxation
dc.subject.otherSieves
dc.subject.otherGlas
dc.subject.otherTransitions
dc.subject.otherMigration
dc.subject.otherStability
dc.titleUltraslow dynamics of water in organic molecular solids
dc.typeArticle
dc.subject.lemacMolècules
dc.subject.lemacCompostos orgànics
dc.contributor.groupUniversitat Politècnica de Catalunya. GCM - Grup de Caracterització de Materials
dc.identifier.doi10.1021/jp4097138
dc.rights.accessRestricted access - publisher's policy
drac.iddocument14143297
dc.description.versionPostprint (published version)
dc.date.lift10000-01-01
upcommons.citation.authorMacovez, R.; Mitsari, E.; Zachariah, M.; Romanini, M.; Zygouri, P.; Gournis, D.; Tamarit, J. Ll.
upcommons.citation.publishedtrue
upcommons.citation.publicationNameThe journal of physical chemistry. Part C, nanomaterials and interfaces
upcommons.citation.volume118
upcommons.citation.number9
upcommons.citation.startingPage4941
upcommons.citation.endingPage4950


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Except where otherwise noted, content on this work is licensed under a Creative Commons license: Attribution-NonCommercial-NoDerivs 3.0 Spain