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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Santos, Lmnbf
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Topics
Publications (23/23 displayed)
- 2023Confined Silver Nanoparticles in Ionic Liquid Filmscitations
- 2022Ohmic heating-assisted synthesis and characterization of Zn(ii), Cu(ii) and Pd(ii) complexes of heterocyclic-fused chlorinscitations
- 2022The impact of the cation alkyl chain length on the wettability of alkylimidazolium-based ionic liquids at the nanoscalecitations
- 2022Extensive characterization of choline chloride and its solid-liquid equilibrium with watercitations
- 2022Enthalpy of solvation of alkali metal salts in a protic ionic liquid: Effect of cation charge and sizecitations
- 2022Solid-Liquid-Gas Phase Equilibria for Small Phenylene-Thiophene Co-Oligomerscitations
- 2022The effect of oxidation state and tert-butyl substituents on the thermal behavior and thin-film morphology of cobalt-complexes (FK 102 and FK 209)citations
- 2021On the Aromatic Stabilization of Fused Polycyclic Aromatic Hydrocarbonscitations
- 2020Morphology, Structure, and Dynamics of Pentacene Thin Films and Their Nanocomposites with [C(2)C(1)im][NTf2] and [C(2)C(1)im][OTF] Ionic Liquidscitations
- 2019Synthesis of Pyridyl and N-Methylpyridinium Analogues of Rosamines: Relevance of Solvent and Charge on Their Photophysical Propertiescitations
- 2019Oxidative Treatment of Multi-Walled Carbon Nanotubes and its Effect on the Mechanical and Electrical Properties of Green Epoxy based Nano-Compositescitations
- 2018High purity and crystalline thin films of methylammonium lead iodide perovskites by a vapor deposition approachcitations
- 2018Thin film deposition of organic hole transporting materials: optical, thermodynamic and morphological properties of naphthyl-substituted benzidinescitations
- 2018Nucleation and growth of microdroplets of ionic liquids deposited by physical vapor method onto different surfacescitations
- 2017On the Deposition of Lead Halide Perovskite Precursors by Physical Vapor Methodcitations
- 2016Morphology of Imidazolium-Based Ionic Liquids as Deposited by Vapor Deposition: Micro-/Nanodroplets and Thin Filmscitations
- 2016The effect of n vs. iso isomerization on the thermophysical properties of aromatic and non-aromatic ionic liquidscitations
- 2015Description and Test of a New Multilayer Thin Film Vapor Deposition Apparatus for Organic Semiconductor Materialscitations
- 2007Thermochemical studies of five crystalline bis(O-alkyl-N-thenoylthiocarbamato)nickel(II) complexescitations
- 2004Standard molar enthalpies of formation of two crystalline bis[N-(diethylaminothiocarbonyl)benzamidinato]nickel(II) complexescitations
- 2004Standard molar enthalpies of formation of two crystalline bis[N-(diethylaminothiocarbonyl)benzamidinato]nickel(II) complexescitations
- 2004Thermodynamics of the interaction between a hydrophobically modified polyelectrolyte and sodium dodecyl sulfate in aqueous solutioncitations
- 2004Thermochemical studies of three bis(O-alkyl-N-benzoylthiocarbamato)nickel(II) complexescitations
Places of action
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article
Solid-Liquid-Gas Phase Equilibria for Small Phenylene-Thiophene Co-Oligomers
Abstract
This work reports a comprehensive experimental evaluation of the solid-liquid-gas phase equilibria for five representative phenylene-thiophene co-oligomers (3-ring aromatic compounds having both phenyl and thienyl units). The melting temperatures and corresponding standard molar enthalpies and entropies of fusion were measured by differential scanning calorimetry. The equilibrium vapor pressures of the crystalline solids as a function of temperature were measured by a combined Knudsen/quartz-crystal effusion method, with the consequent derivation of the standard molar enthalpies, entropies, and Gibbs energies of sublimation. The thermodynamic properties of vaporization were estimated from the fusion and sublimation data. The results were analyzed together with the literature data for the corresponding phenylene and thiophene homo-oligomers. The thermodynamic properties of fusion and sublimation exhibited a dependence on ring identity and position that cannot be adequately described by a simple group additivity reasoning. The plot of the Gibbs energy of sublimation as a function of the number of thienyl rings in the co-oligomer showed the existence of two series. Terminal 3-thienyl rings and a linear molecular shape were found to be consistent factors contributing to the stabilization of the crystal phase. The higher melting temperatures and lower volatilities of crystalline 3-thienyl compounds were tentatively explained by the ability of these rings to maximize intermolecular C-H & BULL;& BULL;& BULL;pi interactions independently of the sulfur position. The optical energy gaps, as measured by UV-vis in solution, were found to lie within the values for typical organic semiconductors (< 4 eV) and to decrease for co-oligomers containing more 2-thienyl units, following the increased ring-ring planarity of the molecules. The surface morphology of vapor-deposited thin films suggests a stronger tendency of the co-oligomers, if compared to their corresponding homo-oligomers p-terphenyl and terthiophene, to form less amorphous films.