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dc.contributor.author
Lazaro Martinez, Juan Manuel
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Rodríguez Castellón, Enrique
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Vega, Daniel
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Monti, Gustavo Alberto
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Chattah, Ana Karina
dc.date.available
2018-03-06T18:12:53Z
dc.date.issued
2015-02
dc.identifier.citation
Lazaro Martinez, Juan Manuel; Rodríguez Castellón, Enrique; Vega, Daniel; Monti, Gustavo Alberto; Chattah, Ana Karina; Solid-state studies of the crystalline/amorphous character in linear poly (ethylenimine hydrochloride) (PEI·HCl) polymers and their copper Complexes; American Chemical Society; Macromolecules; 48; 4; 2-2015; 1115-1125
dc.identifier.issn
0024-9297
dc.identifier.uri
http://hdl.handle.net/11336/37972
dc.description.abstract
Linear poly(ethylenimine hydrochloride) (PEI·HCl) polymers with different molecular weights (22, 87, and 217 kDa) and their copper complexes (Cu-PEI) were studied with particular attention to the crystalline/amorphous character of the polymeric chains in lyophilized and crystallized samples by using 1D and 2D solid-state nuclear magnetic resonance, X-ray photoelectron spectroscopy, and X-ray diffraction techniques. Different 13C{1H} cross-polarization and magic angle spinning experiments using delayed contact time, 1H dipolar filter and 1H spin-lock filter were crucial to determine the different mobility domains in the crystallized and lyophilized samples of PEI·HCl and Cu-PEI. 13C direct polarization experiments allowed the quantification of the crystalline/amorphous segments in each sample. The lyophilization process produced an increase in the amorphous fraction, even when some ordered domains were present, whereas the coordination of copper/sulfate ions produced a significant decrease in the mobility of polymer chains, leading to homogeneous and ordered materials even when Cu was desorbed.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
American Chemical Society
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Poly(Ethylenimine Hydrochloride)
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Cooper Complexes
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Solid State
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Characterization
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Otras Ciencias Químicas
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Ciencias Químicas
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CIENCIAS NATURALES Y EXACTAS
dc.title
Solid-state studies of the crystalline/amorphous character in linear poly (ethylenimine hydrochloride) (PEI·HCl) polymers and their copper Complexes
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2018-03-02T14:19:47Z
dc.journal.volume
48
dc.journal.number
4
dc.journal.pagination
1115-1125
dc.journal.pais
Estados Unidos
dc.journal.ciudad
Washington
dc.description.fil
Fil: Lazaro Martinez, Juan Manuel. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Departamento de Química Orgánica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
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Fil: Rodríguez Castellón, Enrique. Universidad de Málaga; España
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Fil: Vega, Daniel. Comisión Nacional de Energía Atómica; Argentina. Universidad Nacional de General Sarmiento; Argentina
dc.description.fil
Fil: Monti, Gustavo Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Física Enrique Gaviola. Universidad Nacional de Córdoba. Instituto de Física Enrique Gaviola; Argentina
dc.description.fil
Fil: Chattah, Ana Karina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Física Enrique Gaviola. Universidad Nacional de Córdoba. Instituto de Física Enrique Gaviola; Argentina
dc.journal.title
Macromolecules
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://pubs.acs.org/doi/abs/10.1021/ma5023082
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1021/ma5023082
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