Proton conductive ionic liquid crystalline poly(ethyleneimine) polymers functionalized with oxadiazole
Concellón, Alberto (Universidad de Zaragoza) ; Hernández-Ainsa, Silvia (Universidad de Zaragoza) ; Barberá, Joaquín (Universidad de Zaragoza) ; Romero, Pilar (Universidad de Zaragoza) ; Serrano, José Luis (Universidad de Zaragoza) ; Marcos, Mercedes (Universidad de Zaragoza)
Resumen: Two novel series of ionic liquid crystal polymers that display proton conductive properties are presented here. These materials are based on linear (l-PEI) or branched (b-PEI) poly(ethyleneimine) functionalized with unsymmetrical oxadiazole carboxylic acids derived from 1, 3, 4-oxadiazole (1, 3, 4-OXAm) or 1, 2, 4-oxadiazole (1, 2, 4-OXAm). The subscript “m” indicates the length of the spacer between the rigid moiety and the carboxyl group, namely m = 4 and 10. The occurrence of proton transfer from the carboxylic acid to the amine groups was confirmed by FTIR and NMR measurements. The liquid crystalline properties were investigated by differential scanning calorimetry (DSC), polarizing optical microscopy (POM), and X-ray diffraction (XRD). All ionic complexes displayed enantiotropic smectic A mesophases and in the case of the l-PEI derivatives a nematic phase was also observed at high temperatures. All investigated derivatives presented good proton conductivity values as determined by electrochemical impedance spectroscopy (EIS). Therefore, these ionic LC hyperbranched polymers represent an effective approach for the preparation of proton-transporting polymeric materials with potential applications in electrochemical devices.
Idioma: Inglés
DOI: 10.1039/c8ra08253g
Año: 2018
Publicado en: RSC Advances 8, 66 (2018), 37700-37706
ISSN: 2046-2069
Factor impacto JCR: 3.049 (2018)
Categ. JCR: CHEMISTRY, MULTIDISCIPLINARY rank: 68 / 172 = 0.395 (2018) - Q2 - T2
Factor impacto SCIMAGO: 0.807 - Chemistry (miscellaneous) (Q1) - Chemical Engineering (miscellaneous) (Q1)
Financiación: info:eu-repo/grantAgreement/ES/DGA-FSE/E47-17R
Financiación: info:eu-repo/grantAgreement/ES/MINECO/CTQ2015-70174
Tipo y forma: Article (Published version)
Área (Departamento): Área Química Orgánica (Dpto. Química Orgánica)
You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use. You may not use the material for commercial purposes.
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Idioma: Inglés
DOI: 10.1039/c8ra08253g
Año: 2018
Publicado en: RSC Advances 8, 66 (2018), 37700-37706
ISSN: 2046-2069
Factor impacto JCR: 3.049 (2018)
Categ. JCR: CHEMISTRY, MULTIDISCIPLINARY rank: 68 / 172 = 0.395 (2018) - Q2 - T2
Factor impacto SCIMAGO: 0.807 - Chemistry (miscellaneous) (Q1) - Chemical Engineering (miscellaneous) (Q1)
Financiación: info:eu-repo/grantAgreement/ES/DGA-FSE/E47-17R
Financiación: info:eu-repo/grantAgreement/ES/MINECO/CTQ2015-70174
Tipo y forma: Article (Published version)
Área (Departamento): Área Química Orgánica (Dpto. Química Orgánica)
You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use. You may not use the material for commercial purposes. Exportado de SIDERAL (2021-04-16-09:24:46)
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Record created 2019-08-19, last modified 2021-04-16