New nanostructured, ion-conductive, bent-core liquid crystals containing lithium and sodium salts as soft electrolyte candidates
Auria-Soro, Carlota (Universidad de Zaragoza) ; Cruz-Navarro, Nuria ; Folcia, César L. ; Sobrados, Isabel ; Haddad, Amin Sharifi ; Martínez-Felipe, Alfonso ; Ros, M. Blanca
Resumen: Two new tetraethylene glycol (TEG)-containing bent-core molecules are revealed as suitable, versatile supramolecular building blocks to form liquid crystalline phases and organogels in novel structured soft electrolytes. New amphiphilic bent-core molecules [TEG-Bx-10-14], composed of a short polar TEG-segment capping and well-defined bent-core, mesogenic-like structures, and a set of their [1/1] complexes with TfO− and Tf2N−/lithium and sodium salts [MA-TEG-Bx-10-14], are investigated for the first time. FT-IR, 13C CP-MAS-NMR and 1H MAS-NMR studies at variable temperatures indicate the selective complexation of cations in the TEG regions. Although new bent-core molecular designs [TEG-10-Bx-14] do not exhibit liquid crystal order, most of their complexes [MA-TEG-10-Bx-14] stabilize an attractive number of bent-core lamellar mesophases (SmCP, HNF-like, USmCP and Colob). Diffusion coefficients (D) of lithium, favoured by the liquid crystal phase transition, are estimated by solid state NMR spectroscopy. The direct current values of σdc ∼ 10−4 S cm−1 in the mid-high frequency range were found using dielectric spectroscopy, highlighting the potential of bent-core building blocks as organic and nanostructured soft electrolytes containing both lithium and sodium cations, whose ionic conductivities can be optimised through composition tuning and annealing.
Idioma: Inglés
DOI: 10.1039/d5ta09556e
Año: 2026
Publicado en: Journal of Materials Chemistry A (2026), [16 pp.]
ISSN: 2050-7488
Financiación: info:eu-repo/grantAgreement/ES/DGA/E47-23R
Financiación: info:eu-repo/grantAgreement/ES/MCIN/PID2021-122882NB-I00
Financiación: info:eu-repo/grantAgreement/ES/MCIN/PID2024-156641NB-I00
Financiación: info:eu-repo/grantAgreement/ES/MINECO/BES-2016-078753
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 (2026-03-06-14:51:16)
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Idioma: Inglés
DOI: 10.1039/d5ta09556e
Año: 2026
Publicado en: Journal of Materials Chemistry A (2026), [16 pp.]
ISSN: 2050-7488
Financiación: info:eu-repo/grantAgreement/ES/DGA/E47-23R
Financiación: info:eu-repo/grantAgreement/ES/MCIN/PID2021-122882NB-I00
Financiación: info:eu-repo/grantAgreement/ES/MCIN/PID2024-156641NB-I00
Financiación: info:eu-repo/grantAgreement/ES/MINECO/BES-2016-078753
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 (2026-03-06-14:51:16)
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Record created 2026-03-06, last modified 2026-03-06