Self-assembly of bent-core amphiphiles joining the ethylene-oxide/lithium ion tandem

Castillo-Vallés, Martín ; Folcia, César L. ; Ortega, Josu ; Etxebarria, Jesús ; Ros, M. Blanca (Universidad de Zaragoza)

Resumen: The synthesis, supramolecular self-assembly and structural characterization of a new family of tetraethylene oxide (TEG)-based bent-core compounds and their 1/1 lithium-containing complexes are reported. TEG-based bent-core amphiphiles, even joining the TEG/Li+ tandem, are suitable building-blocks to achieve supramolecular nanostructures, in some cases showing chiral features from achiral molecules either in the mesophase or in solvents. The thermal and liquid crystal behavior of these materials studied by polarizing optical microscopy and X-ray diffraction confirmed that Li-based materials stabilized polar smectic C and helical nanofilament-type mesophases, in contrast to the non-liquid crystalline pure TEG-compounds. Alternatively, both the pure amphiphiles and the lithium-doped materials self-assemble into physical gels in non-polar solvents, displaying three-dimensional networks composed of long fibers with lamellar molecular organizations as shown by transmission electron microscopy and X-ray diffraction. Interestingly, biphenyl- and azobenzene-based bent core amphiphiles aggregate in solvent into chiral nanostructured morphologies with supramolecular trends comparable to their molecular arrangement in their liquid crystalline phases.

Idioma: Inglés

DOI: 10.1016/j.molliq.2023.121825

Año: 2023

Publicado en: Journal of Molecular Liquids 381 (2023), 121825 [10 pp.]
ISSN: 0167-7322

Factor impacto JCR: 5.3 (2023)

Categ. JCR: PHYSICS, ATOMIC, MOLECULAR & CHEMICAL rank: 6 / 40 = 0.15 (2023) - Q1 - T1
Categ. JCR: CHEMISTRY, PHYSICAL rank: 58 / 178 = 0.326 (2023) - Q2 - T1

Factor impacto CITESCORE: 10.3 - Condensed Matter Physics (Q1) - Spectroscopy (Q1) - Materials Chemistry (Q1) - Electronic, Optical and Magnetic Materials (Q1) - Physical and Theoretical Chemistry (Q1) - Atomic and Molecular Physics, and Optics (Q1)

Factor impacto SCIMAGO: 0.918 - Atomic and Molecular Physics, and Optics (Q1) - Electronic, Optical and Magnetic Materials (Q1) - Spectroscopy (Q1) - Materials Chemistry (Q1) - Physical and Theoretical Chemistry (Q1) - Condensed Matter Physics (Q1)

Financiación: info:eu-repo/grantAgreement/ES/DGA/E47-20R
Financiación: info:eu-repo/grantAgreement/ES/MCIU-FEDER/PGC2018-093761-B-C31
Financiación: info:eu-repo/grantAgreement/ES/MICINN-FEDER/PID2021-122882NB-I00
Financiación: info:eu-repo/grantAgreement/ES/MINECO/BES-2016-078753

Tipo y forma: Artículo (Versión definitiva)

Área (Departamento): Área Química Orgánica (Dpto. Química Orgánica)