RT info:eu-repo/semantics/article
T1 Modulating organic/inorganic segregation in columnar mesophases
A1 Domingo de la Rubia, Estela de
A1 García Moreno, Gregorio
A1 Folcia, César L.
A1 Ortega, Josu
A1 Etxebarria, Jesús
A1 Coco Cea, Silverio
K1 Materials science
K1 Química inorgánica
K1 Triphenylene
K1 Polarized optical microscopy
K1 Differential scanning calorimetry
K1 Trifenileno
K1 Microscopía óptica polarizada
K1 Differential scanning calorimetry
K1 2303 Química Inorgánica
AB 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.
PB American Chemical Society
SN 1528-7483
YR 2023
FD 2023
LK https://uvadoc.uva.es/handle/10324/61501
UL https://uvadoc.uva.es/handle/10324/61501
LA eng
NO Crystal Growth Design 2023, vol. 23, n. 9, pp. 6812–6821
NO Producción Científica
DS UVaDOC
RD 07-ago-2024