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2 article(s) from Donnio, Bertrand

Efficient synthesis of fluorinated triphenylenes with enhanced arene–perfluoroarene interactions in columnar mesophases

Yang Chen,
Jiao He,
Hang Lin,
Hai-Feng Wang,
Ping Hu,
Bi-Qin Wang,
Ke-Qing Zhao and
Bertrand Donnio

Beilstein J. Org. Chem. 2024, 20, 3263–3273, doi:10.3762/bjoc.20.270

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Figure 1: Fluorotriphenylene derivatives and their nonfluorinated homologs obtained by S_NFAr from 2,2'-dilith...

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Scheme 1: Synthesis, yields, and nomenclature of 1,2,4-trifluoro-6,7,10,11-tetraalkoxy-3-(perfluorophenyl)tri...

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Figure 2: Single crystal structure of 1,2,4-trifluoro-3-(perfluorophenyl)triphenylene (F) viewed along the ma...

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Figure 3: POM textures, observed between crossed polarizers of Janus and dimer, F6, F12, G66, and G48, respec...

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Figure 4: Comparative bar graph summarizing the thermal behavior of Fn, BTP6, and PHn derivatives (2nd heatin...

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Figure 5: Representative S/WAXS patterns of Fn and Gnm compounds.

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Figure 6: Absorption (a) and emission (b) spectra of F6 and G66, measured in different solvents at a concentr...

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Figure 7: DFT calculated frontier molecular orbitals and optimized molecular structures for F1 and G11.

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Full Research Paper

Published 16 Dec 2024

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Liquid-crystalline nanoparticles: Hybrid design and mesophase structures

Gareth L. Nealon,
Romain Greget,
Cristina Dominguez,
Zsuzsanna T. Nagy,
Daniel Guillon,
Jean-Louis Gallani and
Bertrand Donnio

Beilstein J. Org. Chem. 2012, 8, 349–370, doi:10.3762/bjoc.8.39

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Figure 1: Three of the common molecular and supramolecular structural motifs in liquid crystal chemistry: rod...

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Figure 2: Schematic representation of the solvent-mediated ligand exchange process, illustrated for the parti...

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Figure 3: Chemical structures and LC properties of the rodlike ligands discussed in the text.

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Figure 4: Schematic representation of pseudospherical Au NPs coated exclusively with mesogenic rodlike ligand...

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Figure 5: TEM images of Au@6₁₂ (a) before and (b) after thermal treatment. Below: Proposed model of the nanop...

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Figure 6: Ligand deformation at the surface of the gold NPs giving rigid "poles" and a soft equator. Such def...

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Figure 7: A simplified illustration of the local rectangular arrangement of nanoparticles in a condensed mixe...

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Figure 8: Chemical structures and LC properties of the rodlike ligands discussed in the text.

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Figure 9: Schematic drawing of the arrangement of nanoparticles in the columnar phase, as viewed from above (...

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Figure 10: The proposed structural models resulting from ligand migration at the NP surface: (a) Smectic (Au@C₆...

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Figure 11: Reversible migration of the surface ligands as a function of temperature (and phase). Only the blue...

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Figure 12: Photochromic and photo-mesogenic rodlike ligands.

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Figure 13: Chemical structures and LC properties of side-on mesogens used to coat NPs.

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Figure 14: Left: POM image of ligand 12. Right: POM image of Schlieren texture of the hybrid Au@12. Reprinted ...

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Figure 15: Threaded nematic texture of Au@ C₁₂/13 as observed by POM at RT. Scale bar = 10 μm. Reprinted with ...

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Figure 16: Schematic representation of the gold NP columnar structures. (a) Rhombohedral phase in Au@C₁₂/13 an...

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Figure 17: TEM images of thin films of the [Graphic 5] phase of Au@C₁₂/13 recorded with the beam (a) parallel to the [Graphic 6] pla...

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Figure 18: Chemical structures and mesogenic properties of bent-core proto-mesogenic ligands used to coat NPs.

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Figure 19: Chemical structures and mesogenic properties of dendritic and proto-dendritic ligands used to coat ...

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Figure 20: TEM image showing the arrangement of the hybrid NPs Au@16 into regularly spaced rows. Reprinted wit...

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Figure 21: Chemical structures and mesogenic properties of dendritic and proto-dendritic ligands used to coat ...

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Figure 22: Top left: Body-centred (I) cubic lattice of [Graphic 8] symmetry composed of truncated octahedrons. Top right:...

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Figure 23: Model proposed for the organisation of the hybrids within the quasi-nematic mesophase. Reprinted wi...

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Figure 24: Mesogenic dendrons used to coat Au NPs.

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Figure 25: Chemical structures of the discotic mesogenic ligands used to coat NPs.

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Figure 26: TEM images of Au@23_5,12 prepared from aged solutions stood for 10 days in solutions of (a) 1:1 MeOH...

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Figure 27: Some of the various hybrid geometries and packing motifs possible upon ligand grafting to the surfa...

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Review

Published 08 Mar 2012

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