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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Reis, Patrícia
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Publications (3/3 displayed)
- 2020Chitosan polymer electrolytes doped with a dysprosium ionic liquidcitations
- 2019Ionic Liquid Cation Size-Dependent Electromechanical Response of Ionic Liquid/Poly(vinylidene fluoride)-Based Soft Actuatorscitations
- 2017A luminescent europium ionic liquid to improve the performance of chitosan polymer electrolytescitations
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article
A luminescent europium ionic liquid to improve the performance of chitosan polymer electrolytes
Abstract
Ionically conductive and luminescent chitosan solid polymer electrolytes (SPEs) were prepared through the solvent casting method and characterized with respect to their thermal behavior, morphology, structure, ionic conductivity, optical, and photophysical properties. The characterization was performed by analysis of differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), X-ray diffraction (XRD), scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX), atomic force microscopy (AFM), complex impedance and photoluminescence spectroscopies. The chitosan-SPEs were doped with different quantities of 1-ehtyl-3-methylimidazolium europium(III) tetrathiocyanate ([C2mim][Eu(SCN)4]). The chitosann[C2mim][[Eu(SCN)4] membranes exhibited a semicrystalline morphology and good thermal stability (Tonset 134 C). The sample with the highest ionic conductivity was the chitosan4[C2mim][Eu(SCN)4] with 1.34 10 5 and 1.97 10 4 S. cm 1 at 30 and 80 C, respectively. The photoluminescence analysis showed intense red emission corresponding to the 5 D0!7 D2 transition, as it is typical for Eu3+ luminescent materials. The chitosan0.5[C2mim][Eu(SCN)4] sample emitted red luminescence with a lifetime of 0.397 ms. The chitosan1[C2mim][Eu(SCN)4] exhibited the best equilibrium between the membrane’s optical and photophysical features. These results encourage future investigations of these materials for application in electroluminescent devices. ; This work was supported by Fundação para a Ciência e a Tecnologia (FCT) in the framework of the Research unit GREEN-it “Bioresources for Sustainability” (UID/Multi/04551/2013), Laboratório Associado para a Química Verde – Tecnologias e Processos Limpos-LAQV (UID/QUI/50006/2013), and UID/QUI/00686/2013 and UID/QUI/0686/2016. Grants SRFH/BD/90366/2012 (R.L.), SRFH/ BPD/109597/2015 (P.M.R.) and a contract under Investigador FCT 2012 program (J.M.S.S.E.). It was also co-financed by FEDER through the COMPETE Program and PT2020 Partnership Agreement (POCI-01-0145-FEDER ...