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dc.contributor.author
Soulé, Ezequiel Rodolfo
dc.date.available
2024-04-17T15:52:39Z
dc.date.issued
2023-02
dc.identifier.citation
Soulé, Ezequiel Rodolfo; Thermodynamic model of phase equilibrium and isomerization in photoactive azobenzene-based materials; Elsevier Science; Chemical Physics; 566; 2-2023; 1-9
dc.identifier.issn
0301-0104
dc.identifier.uri
http://hdl.handle.net/11336/233350
dc.description.abstract
The capability of azobenzene group to undergo photoinduced trans–cis isomerization is the basis of azobenzene-based photoactive materials. In this work, the thermodynamically consistent theory for photoisomerization of azobenzenes [E. R. Soulé, Chemical Physics Letters, 794 (2022) 139503] is extended to mixtures, considering different cases depending on the intrinsic capability of the azobenzene and the second component to form ordered phases. As in pure azobenzenes, reentrant isotropic phases (induced by photoisomerization) and a low temperature isotropic- nematic transition (corresponding to the cis-saturated system), exist in mixtures, but the temperature range where each phase exists depends on concentration. Phase diagrams with several different coexistence regions (isotropic-isotropic, isotropic-nematic and nematic-nematic, including high temperature, low temperature and reentrant cases) and very atypical shapes are found. Metastability is briefly considered, showing that nematic ordering can persist up to an irradiation intensity that can be several orders of magnitude higher than at the stable transition point.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier Science
dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
AZOBENZENE
dc.subject
CIS–TRANS PHOTO-ISOMERIZATION
dc.subject
LIQUID CRYSTAL MIXTURES
dc.subject
NEMATIC PHASE
dc.subject
PHASE DIAGRAMS
dc.subject
PHASE TRANSITION
dc.subject.classification
Otras Ingeniería de los Materiales
dc.subject.classification
Ingeniería de los Materiales
dc.subject.classification
INGENIERÍAS Y TECNOLOGÍAS
dc.title
Thermodynamic model of phase equilibrium and isomerization in photoactive azobenzene-based materials
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2024-04-17T13:08:49Z
dc.journal.volume
566
dc.journal.pagination
1-9
dc.journal.pais
Países Bajos
dc.journal.ciudad
Amsterdam
dc.description.fil
Fil: Soulé, Ezequiel Rodolfo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones en Ciencia y Tecnología de Materiales. Universidad Nacional de Mar del Plata. Facultad de Ingeniería. Instituto de Investigaciones en Ciencia y Tecnología de Materiales; Argentina
dc.journal.title
Chemical Physics
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/abs/pii/S0301010422003391
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.chemphys.2022.111786
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