| People | Locations | Statistics |
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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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Donnio, Bertrand
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (25/25 displayed)
- 2023Star-shaped Triphenylene-triazine Multi-stimuli Responsive Discotic Liquid Crystals: Synthesis, Properties and Applicationscitations
- 2023Role of lattice defects on the magnetism of gold nanoparticles irradiated with neutronscitations
- 2022Pentacoordinated Liquid Crystalline Zn(II) Complex Organized in Smectic Mesophase: Synthesis, Structural and Electrochemical Propertiescitations
- 2022Janus-Type Dendrimers Based on Highly Branched Fluorinated Chains with Tunable Self-Assembly and 19 F Nuclear Magnetic Resonance Propertiescitations
- 2020Playing with Pt II and Zn II Coordination to Obtain Luminescent Metallomesogenscitations
- 2016Chemical engineering of donor–acceptor liquid crystalline dyads and triads for the controlled nanostructuration of organic semiconductorscitations
- 2015Spin-crossover, mesomorphic and thermoelectrical properties of cobalt(II) complexes with alkylated N3-Schiff basescitations
- 2015Tailoring Anisotropic Interactions between Soft Nanospheres Using Dense Arrays of Smectic Liquid Crystal Edge Dislocationscitations
- 2012Influence of polymorphism on charge transport properties in isomers of fluorenone-based liquid crystalline semiconductorscitations
- 2011From tectons to luminescent supramolecular ionic liquid crystalscitations
- 2011Orienting the Demixion of a Diblock-copolymer Using 193 nm Interferometric Lithography for the Controlled Deposition of Nanoparticlescitations
- 2010Diethynylbenzene-Based Liquid Crystalline Semiconductor for Solution-Processable Organic Thin-Film Transistorscitations
- 2009Miscibility Between Differently-Shaped Mesogens: Structural and Morphological Study of a Phthalocyanine-Perylene Binary Systemcitations
- 2009Miscibility between differently shaped mesogens: Structural and morphological study of a phthalocyanine-perylene binary system.citations
- 2008Metal-directed columnar phase formation in tetrahedral zinc(II) and manganese(II) metallomesogenscitations
- 2008Design of Neutral Metallomesogens from 5,5-Dimethyldipyrromethane: Metal Ion Mediated Control of Folding and Hairpin Structurescitations
- 2007Liquid-crystalline complexes of 1,10-phenanthroline
- 2005Luminescent organometallic liquid crystals based on complexes of bromotricarbonyl rhenium(I)
- 2005Phenanthrolines as versatile ligands for the design of liquid-crystalline metal complexes
- 2005Nematic liquid-crystalline lanthanide complexes
- 2004Liquid-crystalline lanthanide complexes
- 2003Lanthanide complexes forming columnar mesophases
- 2003Liquid-crystalline azines formed by the rare-earth promoted decomposition of hydrazide "habbe'' ligands: structural and thermal properties (vol 13, pg 1639, 2003)
- 2003The search for nematic lanthanide mesogens: a surprising outcome
- 2002Mixed copper - lanthanide metallomesogenscitations
Places of action
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article
Star-shaped Triphenylene-triazine Multi-stimuli Responsive Discotic Liquid Crystals: Synthesis, Properties and Applications
Abstract
International audience ; Electronic and optical properties of pi-conjugated materials are determined by their molecular structures and their supramolecular architectures. Discotic liquid crystals consist of -conjugated aromatic cores surrounded by various connected peripheral alkyl chains, which then self-organize into two-dimensional discotic columnar mesophases. They are of particular interest as they can be applied as charge carrier transport channels for optical and electronic thin-film devices. Order and dynamics are two unique features of discotic liquid crystalline semiconductors. Three star-shaped phenylene-bridged 1,3,5-triazine-triphenylene discotic liquid crystals TPPTn (n = 6, 8, 12) were synthesized by Suzuki-Miyaura cross-coupling reaction and characterized by 1 H and 13 C NMR, HRMS and EA. These TPPTn show good thermal stability by thermogravimetric analysis (TGA), with decomposition temperatures higher than 350 °C. UV-vis absorption and fluorescence measurements show that they possess outstanding fluorescence emission in solution, thin films and in solid state, and that the length of the alkoxy chains affects the fluorescence properties in films or solid state, due to slight changes of the molecular aggregation. TPPTn display aggregation-induced emission (AIE): the longer the alkoxy chains, the stronger the AIE; here, AIE effectively overcomes the disadvantage of aggregation caused quenching (ACQ) of pi-extended discotic liquid crystalline molecules. Further, TPPT6 exhibits a significant solvatochromism from blue to orange with increasing solvent polarity, due to intramolecular charge transfer (ICT), which thus provides a possibility for visual recognition of the solvent polarity. The fluorescence absolute quantum yield is up to 43%. Moreover, TPPT6 exhibits enhanced temperature-responsive fluorescence with increasing temperature in solution, which is different from the temperature quenching observed for traditional molecules; moreover, the fluorescence exhibits a reversible switching from green ...