000079672 001__ 79672
000079672 005__ 20210416092954.0
000079672 0247_ $$2doi$$a10.1039/c8ra08253g
000079672 0248_ $$2sideral$$a109031
000079672 037__ $$aART-2018-109031
000079672 041__ $$aeng
000079672 100__ $$0(orcid)0000-0002-8932-9085$$aConcellón, Alberto$$uUniversidad de Zaragoza
000079672 245__ $$aProton conductive ionic liquid crystalline poly(ethyleneimine) polymers functionalized with oxadiazole
000079672 260__ $$c2018
000079672 5060_ $$aAccess copy available to the general public$$fUnrestricted
000079672 5203_ $$aTwo 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.
000079672 536__ $$9info:eu-repo/grantAgreement/ES/DGA-FSE/E47-17R$$9info:eu-repo/grantAgreement/ES/MINECO/CTQ2015-70174
000079672 540__ $$9info:eu-repo/semantics/openAccess$$aby-nc$$uhttp://creativecommons.org/licenses/by-nc/3.0/es/
000079672 590__ $$a3.049$$b2018
000079672 591__ $$aCHEMISTRY, MULTIDISCIPLINARY$$b68 / 172 = 0.395$$c2018$$dQ2$$eT2
000079672 592__ $$a0.807$$b2018
000079672 593__ $$aChemistry (miscellaneous)$$c2018$$dQ1
000079672 593__ $$aChemical Engineering (miscellaneous)$$c2018$$dQ1
000079672 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000079672 700__ $$0(orcid)0000-0003-3109-4284$$aHernández-Ainsa, Silvia$$uUniversidad de Zaragoza
000079672 700__ $$0(orcid)0000-0001-5816-7960$$aBarberá, Joaquín$$uUniversidad de Zaragoza
000079672 700__ $$0(orcid)0000-0003-1378-0571$$aRomero, Pilar$$uUniversidad de Zaragoza
000079672 700__ $$0(orcid)0000-0001-9866-6633$$aSerrano, José Luis$$uUniversidad de Zaragoza
000079672 700__ $$0(orcid)0000-0001-7056-3181$$aMarcos, Mercedes$$uUniversidad de Zaragoza
000079672 7102_ $$12013$$2765$$aUniversidad de Zaragoza$$bDpto. Química Orgánica$$cÁrea Química Orgánica
000079672 773__ $$g8, 66 (2018), 37700-37706$$pRSC ADVANCES$$tRSC Advances$$x2046-2069
000079672 8564_ $$s523160$$uhttps://zaguan.unizar.es/record/79672/files/texto_completo.pdf$$yVersión publicada
000079672 8564_ $$s116242$$uhttps://zaguan.unizar.es/record/79672/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000079672 909CO $$ooai:zaguan.unizar.es:79672$$particulos$$pdriver
000079672 951__ $$a2021-04-16-09:24:46
000079672 980__ $$aARTICLE