Solid-state studies of the crystalline/amorphous character in linear Poly(ethylenimine hydrochloride) (PEI-HCl) polymers and their copper complexes

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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 sampl...

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Autores principales: Lázaro Martínez, Juan Manuel, Rodríguez Castellón, Enrique, Vega, Daniel, Monti, Gustavo Alberto, Chattah, Ana Karina
Formato: article
Lenguaje:Inglés
Publicado: 2022
Materias:
Poly ethylenimine hydrochloride
Cooper complexes
Solid state
Characterization
Acceso en línea:http://hdl.handle.net/11086/24442
Aporte de:
Repositorio Digital Universitario (UNC) de Universidad Nacional de Córdoba
id I10-R14111086-24442
record_format dspace
institution Universidad Nacional de Córdoba
institution_str I-10
repository_str R-141
collection Repositorio Digital Universitario (UNC)
language Inglés
topic Poly ethylenimine hydrochloride
Cooper complexes
Solid state
Characterization
spellingShingle Poly ethylenimine hydrochloride
Cooper complexes
Solid state
Characterization
Lázaro Martínez, 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
topic_facet Poly ethylenimine hydrochloride
Cooper complexes
Solid state
Characterization
description 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.
format article
author Lázaro Martínez, Juan Manuel
Rodríguez Castellón, Enrique
Vega, Daniel
Monti, Gustavo Alberto
Chattah, Ana Karina
author_facet Lázaro Martínez, Juan Manuel
Rodríguez Castellón, Enrique
Vega, Daniel
Monti, Gustavo Alberto
Chattah, Ana Karina
author_sort Lázaro Martínez, Juan Manuel
title Solid-state studies of the crystalline/amorphous character in linear Poly(ethylenimine hydrochloride) (PEI-HCl) polymers and their copper complexes
title_short Solid-state studies of the crystalline/amorphous character in linear Poly(ethylenimine hydrochloride) (PEI-HCl) polymers and their copper complexes
title_full Solid-state studies of the crystalline/amorphous character in linear Poly(ethylenimine hydrochloride) (PEI-HCl) polymers and their copper complexes
title_fullStr Solid-state studies of the crystalline/amorphous character in linear Poly(ethylenimine hydrochloride) (PEI-HCl) polymers and their copper complexes
title_full_unstemmed Solid-state studies of the crystalline/amorphous character in linear Poly(ethylenimine hydrochloride) (PEI-HCl) polymers and their copper complexes
title_sort solid-state studies of the crystalline/amorphous character in linear poly(ethylenimine hydrochloride) (pei-hcl) polymers and their copper complexes
publishDate 2022
url http://hdl.handle.net/11086/24442
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