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Título
Modulating organic/inorganic segregation in columnar mesophases
Autor
Año del Documento
2023
Editorial
American Chemical Society
Descripción
Producción Científica
Documento Fuente
Crystal Growth Design 2023, vol. 23, n. 9, pp. 6812–6821
Abstract
This work reports an uncommon modulation of columnar segregation of metal–organic triphenylene liquid crystals by blending two structurally dissimilar metallomesogens that can self-associate through complementary electron donor–acceptor interactions. The constituent molecules are cis-[PtCl2(CNR)2] (CNR = 2-(6-(4-isocyanophenoxy)hexyloxy)-3,6,7,10,11-pentakisdodecyloxytriphenylene) that displays an organic/inorganic segregated columnar mesophase and [PtCl2(Bipy)] (Bipy = didodecyl 2,2′-bipyridyl-4,4′-dicarboxylate) that shows a lamellar mesomorphism. The phase diagram of this system was constructed using polarized optical microscopy (POM), differential scanning calorimetry (DSC), and X-ray scattering data. The phase diagram corresponds to a typical binary system with an intermediate compound (in this case a supramolecular aggregate) of stoichiometry [PtCl2(CNR)2]/2[PtCl2(Bipy)], which is maintained in solution. This species shows an unusual columnar mesophase formed by the stacking of alternating organic/inorganic fragments. Quantum chemical calculations show that the columnar structure is mainly supported by complementary π electron donor–acceptor interactions between each triphenylene group of the isocyanide complex and a platinum-bipyridine molecule. This induces the elimination of the organic/inorganic columnar segregation of the isocyano parent component and constitutes an unconventional example of modulation of organic/inorganic segregation in columnar mesophases by the intercalation of metal complexes into hexaalkoxytriphenylene stacks.
Materias (normalizadas)
Materials science
Química inorgánica
Materias Unesco
2303 Química Inorgánica
Palabras Clave
Triphenylene
Polarized optical microscopy
Differential scanning calorimetry
Trifenileno
Microscopía óptica polarizada
Differential scanning calorimetry
ISSN
1528-7483
Revisión por pares
SI
Patrocinador
Ministerio de Ciencia e Innovación (PID2020-118547GB-I00)
Junta de Castilla y León (VA224P20)
Viceconsejería de Universidades e Investigación, Gobierno Vasco (IT1458-22)
Junta de Castilla y León (VA224P20)
Viceconsejería de Universidades e Investigación, Gobierno Vasco (IT1458-22)
Version del Editor
Propietario de los Derechos
© 2023 The Authors
Idioma
eng
Tipo de versión
info:eu-repo/semantics/publishedVersion
Derechos
openAccess
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