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oai:docta.ucm.es:20.500.14352/1249642025-10-15T23:58:22Zcom_20.500.14352_14col_20.500.14352_15

Lithium-ion conduction in liquid-crystalline columnar Pd(II) nanoassemblies Cuerva de Alaiz, Cristian Caro Campos, Irene Cano Esquivel, María Mercedes Rodríguez Castellón, Enrique Kuhn, Alois García Alvarado, Flaviano Schmidt, Rainer 546 538.9 Metallomesogens Liquid crystals Li-ion conduction Nanoassemblies Columnar mesophase Química Física de materiales 2303 Química Inorgánica ©2025 The Authors. CT19/23-INVM125 Liquid crystalline electrolytes are emerging as a promising class of functional materials for energy storage applications. They offer the ability to operate under anhydrous conditions without the presence of acids or flammable solvents, allowing high operating temperatures. Herein, the liquid crystalline phase of a bispyrazolate Pd(II) metallomesogen is used as a platform for Li-ion conduction, taking advantage of the existence of nanochannels in the hexagonal columnar mesophase. Li-doped liquid crystal composites have been prepared with different lithium content, and their mesomorphic properties and ionic conductivities were studied. It was found that the intercalation of lithium ions between molecules does not hinder the formation of the mesophase but rather extends the temperature range in which it is stable due to the existence of ion–dipole interactions between the lithium ions and the uncoordinated N-pyrazolic atoms, leading to lower melting and higher clearing temperatures. High Li-ion conductivity was found in the solid and liquid crystalline phases by complex impedance spectroscopy. The optimally doped composite with an 8:2 (metallomesogen:LiTFSI) molar ratio reaches conductivity values as high as 1.89 × 10–4 Ω–1 cm–1. The work presented is expected to pave the way for a promising class of liquid crystalline Li-ion electrolytes based on metallomesogens. Ministerio de Ciencia e Innovación (España) Agencia Estatal de Investigación (España) European Commission Ministerio de Trabajo y Economía Social (España) Depto. de Química Inorgánica Depto. de Física de Materiales Fac. de Ciencias Químicas Fac. de Ciencias Físicas TRUE pub 2025-10-15T17:28:07Z 2025-10-15T17:28:07Z 2025-06 journal article VoR https://hdl.handle.net/20.500.14352/124964 1944-8244 10.1021/acsami.5c00209 1944-8252 eng info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2020-118078RB-I00/ES/NUEVAS FUNCIONALIDADES PARA UNA ELECTRONICA DE OXIDOS 2D: MATERIA CUANTICA INDUCIDA POR EFFECTOS DE PROXIMIDAD/ info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/PID2022-139039OB-C21/ES/MATERIALES CON ALTAS PRESTACIONES PARA DISPOSITIVOS ELECTROQUIMICOS DE ALMACENAMIENTO DE ENERGIA: BATERIAS DE ION LITIO Y SODIO, Y ELECTROLIZADORES DE ALTA TEMPERATURA/ info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/TED2021-129427B-I00/MEJORES BATERIAS DE MAGNESIO PARA UNA SOCIEDAD MAS SOSTENIBLE info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/PID2021-126235OB-C32/ES/DESIGN OF SUSTAINABLE MATERIALS FOR N2O Y CO2 CAPTURE AND CATALYTIC VALORIZATION/ C. Cuerva, I. Caro-Campos, M. Cano, E. Rodríguez-Castellón, A. Khun, F. García-Alvarado, R. Schmidt. ACS Appl. Mater. Interfaces 2025, 17, 30, 42915–42924 Attribution 4.0 International http://creativecommons.org/licenses/by/4.0/ open access application/pdf American Chemical Society