2026-04-14T17:01:56Zhttps://uvadoc.uva.es/oai/request

oai:uvadoc.uva.es:10324/615012025-03-04T12:37:41Zcom_10324_28542com_10324_952com_10324_894col_10324_28543

Domingo de la Rubia, Estela de García Moreno, Gregorio José Folcia, César L. Ortega, Josu Etxebarria, Jesús Coco Cea, Silverio 2023-09-11T08:28:50Z 2023-09-11T08:28:50Z 2023 Crystal Growth Design 2023, vol. 23, n. 9, pp. 6812–6821 1528-7483 https://uvadoc.uva.es/handle/10324/61501 10.1021/acs.cgd.3c00660 6812 9 6821 Crystal Growth & Design 23 1528-7505 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. eng info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/4.0/ © 2023 The Authors Atribución 4.0 Internacional Materials science Química inorgánica Modulating organic/inorganic segregation in columnar mesophases info:eu-repo/semantics/article