1
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Maldivi P, Guillon D, Giroud-Godquin AM, Marchon JC, Abied H, Dexpert H, Skoukios A. Copper K edge EXAFS spectroscopy of the crystalline and columnar phases of copper (II) carboxylates. ACTA ACUST UNITED AC 2017. [DOI: 10.1051/jcp/1989861651] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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2
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García-Márquez AR, Heinrich B, Beyer N, Guillon D, Donnio B. Mesomorphism and Shape-Memory Behavior of Main-Chain Liquid-Crystalline Co-Elastomers: Modulation by the Chemical Composition. Macromolecules 2014. [DOI: 10.1021/ma501164u] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Alfonso Ramon García-Márquez
- Institut
de Physique et de Chimie des Matériaux de Strasbourg (IPCMS), UMR 7504 (CNRS-Université de Strasbourg), 23 Rue du Loess BP 43, 67034 Strasbourg, Cedex 2, France
| | - Benoît Heinrich
- Institut
de Physique et de Chimie des Matériaux de Strasbourg (IPCMS), UMR 7504 (CNRS-Université de Strasbourg), 23 Rue du Loess BP 43, 67034 Strasbourg, Cedex 2, France
| | - Nicolas Beyer
- Institut
de Physique et de Chimie des Matériaux de Strasbourg (IPCMS), UMR 7504 (CNRS-Université de Strasbourg), 23 Rue du Loess BP 43, 67034 Strasbourg, Cedex 2, France
| | - Daniel Guillon
- Institut
de Physique et de Chimie des Matériaux de Strasbourg (IPCMS), UMR 7504 (CNRS-Université de Strasbourg), 23 Rue du Loess BP 43, 67034 Strasbourg, Cedex 2, France
| | - Bertrand Donnio
- Institut
de Physique et de Chimie des Matériaux de Strasbourg (IPCMS), UMR 7504 (CNRS-Université de Strasbourg), 23 Rue du Loess BP 43, 67034 Strasbourg, Cedex 2, France
- Complex Assemblies
of Soft Matter Laboratory (COMPASS), UMI 3254 (CNRS-Solvay-University
of Pennsylvania), CRTB, 350 George
Patterson Boulevard, Bristol, Pennsylvania 19007, United States
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3
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Zeng D, Tahar-Djebbar I, Xiao Y, Kameche F, Kayunkid N, Brinkmann M, Guillon D, Heinrich B, Donnio B, Ivanov DA, Lacaze E, Kreher D, Mathevet F, Attias AJ. Intertwined Lamello-Columnar Coassemblies in Liquid-Crystalline Side-Chain Π-Conjugated Polymers: Toward a New Class of Nanostructured Supramolecular Organic Semiconductors. Macromolecules 2014. [DOI: 10.1021/ma4020356] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Danli Zeng
- Laboratoire
de Chimie des Polymères (LCP), UMR 7610 CNRS-Université Pierre et Marie Curie Paris 6, 3 Rue
Galilée, 94200 Ivry-sur-Seine, France
| | - Ibtissam Tahar-Djebbar
- Laboratoire
de Chimie des Polymères (LCP), UMR 7610 CNRS-Université Pierre et Marie Curie Paris 6, 3 Rue
Galilée, 94200 Ivry-sur-Seine, France
| | - Yiming Xiao
- Laboratoire
de Chimie des Polymères (LCP), UMR 7610 CNRS-Université Pierre et Marie Curie Paris 6, 3 Rue
Galilée, 94200 Ivry-sur-Seine, France
| | - Farid Kameche
- Laboratoire
de Chimie des Polymères (LCP), UMR 7610 CNRS-Université Pierre et Marie Curie Paris 6, 3 Rue
Galilée, 94200 Ivry-sur-Seine, France
| | - Navaphun Kayunkid
- Institut Charles Sadron (ICS), UPR 22 (CNRS), 23 rue du Loess, BP 84047, 67034 Strasbourg cedex 2, France
| | - Martin Brinkmann
- Institut Charles Sadron (ICS), UPR 22 (CNRS), 23 rue du Loess, BP 84047, 67034 Strasbourg cedex 2, France
| | - Daniel Guillon
- Institut
de Physique et Chimie des Matériaux de Strasbourg (IPCMS),
UMR 7504, CNRS-Université de Strasbourg, 23 rue du Loess, 67034 Strasbourg Cedex
2, France
| | - Benoît Heinrich
- Institut
de Physique et Chimie des Matériaux de Strasbourg (IPCMS),
UMR 7504, CNRS-Université de Strasbourg, 23 rue du Loess, 67034 Strasbourg Cedex
2, France
| | - Bertrand Donnio
- Institut
de Physique et Chimie des Matériaux de Strasbourg (IPCMS),
UMR 7504, CNRS-Université de Strasbourg, 23 rue du Loess, 67034 Strasbourg Cedex
2, France
- Complex
Assemblies of Soft Matter Laboratory (COMPASS), UMI 3254, CNRS-Rhodia/Solvay—University of Pennsylvania, CRTB,
350 George Patterson Boulevard, Bristol, Pennsylvania 19007, United States
| | - Dimitri A. Ivanov
- Institut
de Science des Matériaux de Mulhouse (IS2M), UMR 7361, CNRS-Université de Haute Alsace, 15, rue Jean Starcky, BP 2488, 68057 Mulhouse cedex, France
| | - Emmanuelle Lacaze
- Institut
des NanoSciences de Paris (INSP), UMR 7588, CNRS-Université Pierre et Marie Curie Paris 6, 4 Place Jussieu, 75252 Paris Cedex 05, France
| | - David Kreher
- Laboratoire
de Chimie des Polymères (LCP), UMR 7610 CNRS-Université Pierre et Marie Curie Paris 6, 3 Rue
Galilée, 94200 Ivry-sur-Seine, France
| | - Fabrice Mathevet
- Laboratoire
de Chimie des Polymères (LCP), UMR 7610 CNRS-Université Pierre et Marie Curie Paris 6, 3 Rue
Galilée, 94200 Ivry-sur-Seine, France
| | - André-Jean Attias
- Laboratoire
de Chimie des Polymères (LCP), UMR 7610 CNRS-Université Pierre et Marie Curie Paris 6, 3 Rue
Galilée, 94200 Ivry-sur-Seine, France
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Bottazzi T, Cecchi F, Zelcer A, Heinrich B, Donnio B, Guillon D, Cukiernik FD. Thermotropic mesomorphism of mixed-valent diruthenium aliphatic carboxylates with axial anion bearing two aliphatic chains. J COORD CHEM 2013. [DOI: 10.1080/00958972.2013.839783] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Tamara Bottazzi
- Instituto de Ciencias, Universidad Nacional de General Sarmiento, Los Polvorines, Argentina
| | - Florencia Cecchi
- INQUIMAE, Departamento de Química Inorgánica, Analítica y Química Física, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Buenos Aires, Argentina
| | - Andrés Zelcer
- INQUIMAE, Departamento de Química Inorgánica, Analítica y Química Física, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Buenos Aires, Argentina
- Gerencia Química, Centro Atómico Constituyentes, Comisión Nacional de Energía Atómica, Buenos Aires, Argentina
| | - Benoît Heinrich
- Institut de Physique et Chimie des Matériaux de Strasbourg (IPCMS), Université de Strasbourg – CNRS, Strasbourg, France
| | - Bertrand Donnio
- Institut de Physique et Chimie des Matériaux de Strasbourg (IPCMS), Université de Strasbourg – CNRS, Strasbourg, France
| | - Daniel Guillon
- Institut de Physique et Chimie des Matériaux de Strasbourg (IPCMS), Université de Strasbourg – CNRS, Strasbourg, France
| | - Fabio D. Cukiernik
- Instituto de Ciencias, Universidad Nacional de General Sarmiento, Los Polvorines, Argentina
- INQUIMAE, Departamento de Química Inorgánica, Analítica y Química Física, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Buenos Aires, Argentina
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5
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Toth K, Molloy JK, Matta M, Heinrich B, Guillon D, Bergamini G, Zerbetto F, Donnio B, Ceroni P, Felder-Flesch D. A Strongly Emitting Liquid-Crystalline Derivative of Y3N@C80: Bright and Long-Lived Near-IR Luminescence from a Charge Transfer State. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201305536] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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6
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Toth K, Molloy JK, Matta M, Heinrich B, Guillon D, Bergamini G, Zerbetto F, Donnio B, Ceroni P, Felder-Flesch D. A strongly emitting liquid-crystalline derivative of Y(3)N@C(80): bright and long-lived near-IR luminescence from a charge transfer state. Angew Chem Int Ed Engl 2013; 52:12303-7. [PMID: 24123466 DOI: 10.1002/anie.201305536] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2013] [Indexed: 11/09/2022]
Abstract
Great balls of fire: C60 and Y3 N@C80 were connected to the same oligo(phenyleneethynylene) unit to investigate their structural and photophysical properties. NMR investigations revealed a fulleroid structure for the Y3 N@C80 derivative, and both dyads gave rise to columnar phases with core-shell cylinders. The black and gray spheres represent the fullerene core units of the Y3 N@C80 derivative, which is an ideal candidate to be involved in energy and electron transfer processes.
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Affiliation(s)
- Kalman Toth
- Institut de Physique et Chimie des Matériaux de Strasbourg, UMR CNRS UdS 7504, 23 rue du loess BP 43, 67034 Strasbourg Cedex 2 (France)
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7
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Alameddine B, Aebischer OF, Heinrich B, Guillon D, Donnio B, Jenny TA. Influence of linear and branched perfluoroalkylated side chains on the π–π stacking behaviour of hexa-peri-hexabenzocoronene and thermotropic properties. Supramol Chem 2013. [DOI: 10.1080/10610278.2013.831860] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Bassam Alameddine
- Department of Mathematics and Natural Sciences, Gulf University for Science and Technology, Hawally, 32093, Kuwait
| | | | - Benoît Heinrich
- Institut de Physique et Chimie des Matériaux de Strasbourg (IPCMS), UMR 7504 (CNRS-Université de Strasbourg), 23 rue du Loess, BP43, 67034, Strasbourg cedex 2, France
| | - Daniel Guillon
- Institut de Physique et Chimie des Matériaux de Strasbourg (IPCMS), UMR 7504 (CNRS-Université de Strasbourg), 23 rue du Loess, BP43, 67034, Strasbourg cedex 2, France
| | - Bertrand Donnio
- Institut de Physique et Chimie des Matériaux de Strasbourg (IPCMS), UMR 7504 (CNRS-Université de Strasbourg), 23 rue du Loess, BP43, 67034, Strasbourg cedex 2, France
| | - Titus A. Jenny
- Department of Chemistry, University of Fribourg, Chemin du Musée 9, CH-1700, Fribourg, Switzerland
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8
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Fleutot S, Nealon GL, Pauly M, Pichon BP, Leuvrey C, Drillon M, Gallani JL, Guillon D, Donnio B, Begin-Colin S. Spacing-dependent dipolar interactions in dendronized magnetic iron oxide nanoparticle 2D arrays and powders. Nanoscale 2013; 5:1507-16. [PMID: 23306456 DOI: 10.1039/c2nr32117c] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Self-assembly of nanoparticles (NPs) into tailored structures is a promising strategy for the production and design of materials with new functions. In this work, 2D arrays of iron oxide NPs with interparticle distances tuned by grafting fatty acids and dendritic molecules at the NPs surface have been obtained over large areas with high density using the Langmuir-Blodgett technique. The anchoring agent of molecules and the Janus structure of NPs are shown to be key parameters driving the deposition. Finally the influence of interparticle distance on the collective magnetic properties in powders and in monolayers is clearly demonstrated by DC and AC SQUID measurements. The blocking temperature T(B) increases as the interparticle distance decreases, which is consistent with the fact that dipolar interactions are responsible for this increase. Dipolar interactions are found to be stronger for particles assembled in thin films compared to powdered samples and may be described by using the Vogel Fulcher model.
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Affiliation(s)
- Solenne Fleutot
- Institut de Physique et de Chimie des Matériaux de Strasbourg, UMR CNRS-UdS 7504, 23, rue du Loess, BP 43, 67034 Strasbourg Cedex 2, France
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9
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Nealon GL, Greget R, Dominguez C, Nagy ZT, Guillon D, Gallani JL, Donnio B. Liquid-crystalline nanoparticles: Hybrid design and mesophase structures. Beilstein J Org Chem 2012; 8:349-70. [PMID: 22509204 PMCID: PMC3326612 DOI: 10.3762/bjoc.8.39] [Citation(s) in RCA: 107] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2011] [Accepted: 02/09/2012] [Indexed: 01/28/2023] Open
Abstract
Liquid-crystalline nanoparticles represent an exciting class of new materials for a variety of potential applications. By combining supramolecular ordering with the fluid properties of the liquid-crystalline state, these materials offer the possibility to organise nanoparticles into addressable 2-D and 3-D arrangements exhibiting high processability and self-healing properties. Herein, we review the developments in the field of discrete thermotropic liquid-crystalline nanoparticle hybrids, with special emphasis on the relationship between the nanoparticle morphology and the nature of the organic ligand coating and their resulting phase behaviour. Mechanisms proposed to explain the supramolecular organisation of the mesogens within the liquid-crystalline phases are discussed.
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Affiliation(s)
- Gareth L Nealon
- Institut de Physique et Chimie des Matériaux de Strasbourg (IPCMS), CNRS-Université de Strasbourg (UMR 7504), 23 rue du Loess, BP 43, 67034 Strasbourg Cedex 2, France
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10
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Nagy ZT, Heinrich B, Guillon D, Tomczyk J, Stumpe J, Donnio B. Heterolithic azobenzene-containing supermolecular tripedal liquid crystals self-organizing into highly segregated bilayered smectic phases. ACTA ACUST UNITED AC 2012. [DOI: 10.1039/c2jm33751g] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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11
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Bury I, Heinrich B, Bourgogne C, Mehl GH, Guillon D, Donnio B. Self-assembly and liquid-crystalline supramolecular organizations of semifluorinated block co-dendritic supermolecules. NEW J CHEM 2012. [DOI: 10.1039/c1nj20530g] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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12
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Mamlouk-Chaouachi H, Heinrich B, Bourgogne C, Guillon D, Donnio B, Felder-Flesch D. Nematic self-organization of regioselectively polyfunctionalized [60]fullerene. ACTA ACUST UNITED AC 2011. [DOI: 10.1039/c1jm10982k] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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13
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Garcia-Márquez A, Demortière A, Heinrich B, Guillon D, Bégin-Colin S, Donnio B. Iron oxide nanoparticle-containing main-chain liquid crystalline elastomer: towards soft magnetoactive networks. ACTA ACUST UNITED AC 2011. [DOI: 10.1039/c1jm11381j] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Demortière A, Panissod P, Pichon BP, Pourroy G, Guillon D, Donnio B, Bégin-Colin S. Size-dependent properties of magnetic iron oxide nanocrystals. Nanoscale 2011; 3:225-32. [PMID: 21060937 DOI: 10.1039/c0nr00521e] [Citation(s) in RCA: 205] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
The fine control of iron oxide nanocrystal sizes within the nanometre scale (diameters range from 2.5 to 14 nm) allows us to investigate accurately the size-dependence of their structural and magnetic properties. A study of the growth conditions of these nanocrystals obtained by thermal decomposition of an iron oleate precursor in high-boiling point solvents has been carried out. Both the type of solvent used and the ligand/precursor ratio have been systematically varied, and were found to be the key parameters to control the growth process. The lattice parameters of all the nanocrystals deduced from X-ray diffraction measurements are consistent with a structure of the type Fe3-xO4, i.e. intermediate between magnetite and maghemite, which evolves toward the maghemite structure for the smallest sizes (x=1/3). The evolution of the magnetic behavior with nanoparticle sizes emphasizes clearly the influence of the surface, especially on the saturation magnetization Ms and the magneto-crystalline anisotropy K. Dipolar interactions and thermal dependence have been also taken into account in the study on the nanoscale size-effect of magnetic properties.
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Affiliation(s)
- A Demortière
- Institut de Physique et Chimie des Matériaux (IPCMS), UMR 7504 Université de Strasbourg-CNRS, 23, rue du Loess, BP 43, 67034, Strasbourg Cedex 2, France
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15
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Dechambenoit P, Ferlay S, Donnio B, Guillon D, Hosseini MW. From tectons to luminescent supramolecular ionic liquid crystals. Chem Commun (Camb) 2011; 47:734-6. [DOI: 10.1039/c0cc03970e] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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16
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Santos-Martell RG, Larios-López L, Rodríguez-González RJ, Donnio B, Guillon D, Navarro-Rodríguez D. Synthesis and liquid-crystalline properties of poly(4-vinylpyridinium) bromides N-substituted with dialkyloxyterphenyl groups. J Appl Polym Sci 2010. [DOI: 10.1002/app.33334] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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17
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Madathil PK, Heinrich B, Donnio B, Mathevet F, Fave JL, Guillon D, Attias AJ, Lee C, Kim TD, Lee KS. Diethynylbenzene-based liquid crystalline semiconductor for solution-processable organic thin-film transistors. J Nanosci Nanotechnol 2010; 10:6800-6804. [PMID: 21137800 DOI: 10.1166/jnn.2010.2947] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
We report here the synthesis and characterization of novel diethynylbenzene-based liquid crystalline semiconductor (P1) for organic thin-film transistors (OTFTs). Compound P1 was synthesized by the Sonogashira coupling reaction between 2-bromo-5-(4-hexylthiophen-2-yl)thieno[3,2-b]thiophene and 1,4-bis(dodecyloxy)-2,5-diethynylbenzene. Top contact OTFTs were fabricated by spin casting with 2 wt% solution of P1 in chloroform and their best performance, which exhibited a hole mobility of 4.5 x 10(-5) cm2/Vs, was showed after annealing of the films at liquid crystalline temperature. Time-of-flight (TOF) mobility measured at liquid crystalline phase was observed to be 1.5 x 10(-6) cm2/Vs for both positive and negative carriers. These results indicate that the liquid crystallinity helps to improve the molecular packing and enhance charge mobility for P1. These advantages can be applicable to design and construct solution-processable OTFT materials for electronic applications.
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Jensen TB, Terazzi E, Buchwalder KL, Guénée L, Nozary H, Schenk K, Heinrich B, Donnio B, Guillon D, Piguet C. Dimerization of Dendrimeric Lanthanide Complexes: Thermodynamic, Thermal, and Liquid-Crystalline Properties. Inorg Chem 2010; 49:8601-19. [DOI: 10.1021/ic101220v] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Thomas Binderup Jensen
- Department of Inorganic, Analytical and Applied Chemistry, University of Geneva, 30 quai E. Ansermet, CH-1211 Geneva 4, Switzerland
| | - Emmanuel Terazzi
- Department of Inorganic, Analytical and Applied Chemistry, University of Geneva, 30 quai E. Ansermet, CH-1211 Geneva 4, Switzerland
| | - Kerry-Lee Buchwalder
- Department of Inorganic, Analytical and Applied Chemistry, University of Geneva, 30 quai E. Ansermet, CH-1211 Geneva 4, Switzerland
| | - Laure Guénée
- Department of Inorganic, Analytical and Applied Chemistry, University of Geneva, 30 quai E. Ansermet, CH-1211 Geneva 4, Switzerland
| | - Homayoun Nozary
- Department of Inorganic, Analytical and Applied Chemistry, University of Geneva, 30 quai E. Ansermet, CH-1211 Geneva 4, Switzerland
| | - Kurt Schenk
- Laboratory of Crystallography, Ecole Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland
| | - Benoît Heinrich
- Groupe des Matériaux Organiques, Institut de Physique et Chimie des Matériaux de Strasbourg (IPCMS), 23 rue du Loess, B.P. 43, F67034 Strasbourg Cedex 2, France
| | - Bertrand Donnio
- Groupe des Matériaux Organiques, Institut de Physique et Chimie des Matériaux de Strasbourg (IPCMS), 23 rue du Loess, B.P. 43, F67034 Strasbourg Cedex 2, France
| | - Daniel Guillon
- Groupe des Matériaux Organiques, Institut de Physique et Chimie des Matériaux de Strasbourg (IPCMS), 23 rue du Loess, B.P. 43, F67034 Strasbourg Cedex 2, France
| | - Claude Piguet
- Department of Inorganic, Analytical and Applied Chemistry, University of Geneva, 30 quai E. Ansermet, CH-1211 Geneva 4, Switzerland
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19
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Demortière A, Buathong S, Pichon BP, Panissod P, Guillon D, Bégin-Colin S, Donnio B. Nematic-like organization of magnetic mesogen-hybridized nanoparticles. Small 2010; 6:1341-1346. [PMID: 20486228 DOI: 10.1002/smll.201000285] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
A fluid nematic-like phase is induced in monodisperse iron oxide nanoparticles with a diameter of 3.3 nm. This supramolecular arrangement is governed by the covalent functionalization of the nanoparticle surface with cyanobiphenyl-based ligands as mesogenic promoters. The design and synthesis of these hybrid materials and the study of their mesogenic properties are reported. In addition, the modifications of the magnetic properties of the hybridized nanoparticles are investigated as a function of the different grafted ligands. Owing to the rather large interparticular distances (about 7 nm), the dipolar interaction between nanoparticles is shown to play only a minor role. Conversely, the surface magnetic anisotropy of the particles is significantly affected by the surface derivatization.
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Affiliation(s)
- Arnaud Demortière
- Institut de Physique et Chimie des Matériaux de Strasbourg (IPCMS), CNRS-Université de Strasbourg (UMR7504), Strasbourg Cedex 2, France
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20
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Ahmida M, Larocque R, Ahmed MS, Vacaru A, Donnio B, Guillon D, Eichhorn SH. Halide effect in electron rich and deficient discotic phthalocyanines. ACTA ACUST UNITED AC 2010. [DOI: 10.1039/b917169j] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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21
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Montani RS, Hegguilustoy CM, Del Rosso PG, Donnio B, Guillon D, Garay RO. 4′-(2-(2-Ethoxyethoxy)ethoxy)biphenyl-4-carboxylic acid—a polar smectogen for amphipathic liquid crystals. Tetrahedron Lett 2009. [DOI: 10.1016/j.tetlet.2009.07.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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22
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Affiliation(s)
- Joanna Wolska
- Department of Chemistry, University of Warsaw, Al. Zwirki i Wigury 101, 02-089 Warsaw, Poland
| | - Jozef Mieczkowski
- Department of Chemistry, University of Warsaw, Al. Zwirki i Wigury 101, 02-089 Warsaw, Poland
- Institute of Chemistry, Military University of Technology, 00-908, Warsaw, Poland
| | - Damian Pociecha
- Department of Chemistry, University of Warsaw, Al. Zwirki i Wigury 101, 02-089 Warsaw, Poland
| | - Saïwan Buathong
- IPCMS, CNRS-Université de Strasbourg (UMR 7504), 23 rue du Loess, BP43, 67034, Strasbourg cedex 2, France
| | - Bertrand Donnio
- IPCMS, CNRS-Université de Strasbourg (UMR 7504), 23 rue du Loess, BP43, 67034, Strasbourg cedex 2, France
| | - Daniel Guillon
- IPCMS, CNRS-Université de Strasbourg (UMR 7504), 23 rue du Loess, BP43, 67034, Strasbourg cedex 2, France
| | - Ewa Gorecka
- Department of Chemistry, University of Warsaw, Al. Zwirki i Wigury 101, 02-089 Warsaw, Poland
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Okabe T, Nakazaki K, Igaue T, Nakamura N, Donnio B, Guillon D, Gallani JL. Synthesis and physical properties of ferrocene derivatives. XXI. Crystal structure of a liquid crystalline ferrocene derivative, 1,1'-bis[3-[4-(4-methoxyphenoxycarbonyl)phenoxy]propyloxycarbonyl]ferrocene. J Appl Crystallogr 2009. [DOI: 10.1107/s0021889808042039] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
The crystal structure of the title 1,1′-disubstituted ferrocene derivative was determined by X-ray diffraction using a single crystal. This compound exhibits a nematic phase only. The X-ray structure analysis revealed that the two substituents lie in the same direction (`U' shape) and the flexible spacer adopts agaucheconformation. These conformations are strongly related to the formation of a rod-like shape, which favors liquid crystalline behavior. In the crystal structure, C—H...π, π–π and T-stacking interactions were observed. It is considered that these interactions play a major role in stabilizing the molecular packing arrangement and the mesomorphism.
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Chaia ZD, Rusjan MC, Castro MA, Donnio B, Heinrich B, Guillon D, Baggio RF, Cukiernik FD. Supramolecular architecture elucidation of the room temperature columnar mesophases exhibited by mixed-valent diruthenium alkoxybenzoates. ACTA ACUST UNITED AC 2009. [DOI: 10.1039/b900779b] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Buathong S, Gehringer L, Donnio B, Guillon D. Supramolecular organization of dendritic supermolecules into liquid crystalline mesophases. CR CHIM 2009. [DOI: 10.1016/j.crci.2008.08.008] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Mammeri F, Bras YL, Daou TJ, Gallani JL, Colis S, Pourroy G, Donnio B, Guillon D, Bégin-Colin S. Formation of Ferrimagnetic Films with Functionalized Magnetite Nanoparticles Using the Langmuir−Blodgett Technique. J Phys Chem B 2008; 113:734-8. [DOI: 10.1021/jp808177y] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Fayna Mammeri
- Institut de Physique et Chimie des Matériaux de Strasbourg UMR 7504 CNRS-ULP, 23, rue du Loess, BP 43, 67034 Strasbourg cedex 2, France
| | - Yves Le Bras
- Institut de Physique et Chimie des Matériaux de Strasbourg UMR 7504 CNRS-ULP, 23, rue du Loess, BP 43, 67034 Strasbourg cedex 2, France
| | - Toufic J. Daou
- Institut de Physique et Chimie des Matériaux de Strasbourg UMR 7504 CNRS-ULP, 23, rue du Loess, BP 43, 67034 Strasbourg cedex 2, France
| | - Jean-Louis Gallani
- Institut de Physique et Chimie des Matériaux de Strasbourg UMR 7504 CNRS-ULP, 23, rue du Loess, BP 43, 67034 Strasbourg cedex 2, France
| | - Silviu Colis
- Institut de Physique et Chimie des Matériaux de Strasbourg UMR 7504 CNRS-ULP, 23, rue du Loess, BP 43, 67034 Strasbourg cedex 2, France
| | - Geneviève Pourroy
- Institut de Physique et Chimie des Matériaux de Strasbourg UMR 7504 CNRS-ULP, 23, rue du Loess, BP 43, 67034 Strasbourg cedex 2, France
| | - Bertrand Donnio
- Institut de Physique et Chimie des Matériaux de Strasbourg UMR 7504 CNRS-ULP, 23, rue du Loess, BP 43, 67034 Strasbourg cedex 2, France
| | - Daniel Guillon
- Institut de Physique et Chimie des Matériaux de Strasbourg UMR 7504 CNRS-ULP, 23, rue du Loess, BP 43, 67034 Strasbourg cedex 2, France
| | - Sylvie Bégin-Colin
- Institut de Physique et Chimie des Matériaux de Strasbourg UMR 7504 CNRS-ULP, 23, rue du Loess, BP 43, 67034 Strasbourg cedex 2, France
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Ames KA, Collinson SR, Blake AJ, Wilson C, Love JB, Bruce DW, Donnio B, Guillon D, Schröder M. Design of Neutral Metallomesogens from 5,5-Dimethyldipyrromethane: Metal Ion Mediated Control of Folding and Hairpin Structures. Eur J Inorg Chem 2008. [DOI: 10.1002/ejic.200800676] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Shimizu Y, Heinrich B, Guillon D, Shiro M, Monobe H, Oikawa K. Mesophase semiconductors: design for 3D-mesophases with effective paths for electronic charge hopping. Acta Crystallogr A 2008. [DOI: 10.1107/s0108767308099005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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29
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Coco S, Cordovilla C, Donnio B, Espinet P, García-Casas M, Guillon D. Self-Organization of Dendritic Supermolecules, Based on Isocyanide–Gold(I), –Copper(I), –Palladium(II), and –Platinum(II) Complexes, into Micellar Cubic Mesophases. Chemistry 2008; 14:3544-52. [DOI: 10.1002/chem.200800128] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Bispo M, Guillon D, Donnio B, Finkelmann H. Main-Chain Liquid Crystalline Elastomers: Monomer and Cross-Linker Molecular Control of the Thermotropic and Elastic Properties. Macromolecules 2008. [DOI: 10.1021/ma7026929] [Citation(s) in RCA: 60] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Miguel Bispo
- Institut de Physique et Chimie des Matériaux de Strasbourg, CNRS-ULP (UMR 7504), 23, rue du Loess, BP 43 F-67037 Strasbourg Cedex 2, France, and Institut für Makromolekulare Chemie, Albert-Ludwigs-Universität Freiburg, Stefan-Meier-Strasse 31, 79104 Freiburg, Germany
| | - Daniel Guillon
- Institut de Physique et Chimie des Matériaux de Strasbourg, CNRS-ULP (UMR 7504), 23, rue du Loess, BP 43 F-67037 Strasbourg Cedex 2, France, and Institut für Makromolekulare Chemie, Albert-Ludwigs-Universität Freiburg, Stefan-Meier-Strasse 31, 79104 Freiburg, Germany
| | - Bertrand Donnio
- Institut de Physique et Chimie des Matériaux de Strasbourg, CNRS-ULP (UMR 7504), 23, rue du Loess, BP 43 F-67037 Strasbourg Cedex 2, France, and Institut für Makromolekulare Chemie, Albert-Ludwigs-Universität Freiburg, Stefan-Meier-Strasse 31, 79104 Freiburg, Germany
| | - Heino Finkelmann
- Institut de Physique et Chimie des Matériaux de Strasbourg, CNRS-ULP (UMR 7504), 23, rue du Loess, BP 43 F-67037 Strasbourg Cedex 2, France, and Institut für Makromolekulare Chemie, Albert-Ludwigs-Universität Freiburg, Stefan-Meier-Strasse 31, 79104 Freiburg, Germany
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Coco S, Cordovilla C, Espinet P, Gallani JL, Guillon D, Donnio B. Supramolecular Aggregates in Fluid Phases: Mesomorphicortho-Palladated Complexes with Substituted Crown Ethers and Their Potassium Adducts. Eur J Inorg Chem 2008. [DOI: 10.1002/ejic.200700786] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Terazzi E, Bourgogne C, Welter R, Gallani JL, Guillon D, Rogez G, Donnio B. Single-Molecule Magnets with Mesomorphic Lamellar Ordering. Angew Chem Int Ed Engl 2008. [DOI: 10.1002/ange.200704460] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Terazzi E, Bourgogne C, Welter R, Gallani JL, Guillon D, Rogez G, Donnio B. Single-Molecule Magnets with Mesomorphic Lamellar Ordering. Angew Chem Int Ed Engl 2008; 47:490-5. [DOI: 10.1002/anie.200704460] [Citation(s) in RCA: 76] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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34
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Morale F, Finn RL, Collinson SR, Blake AJ, Wilson C, Bruce DW, Guillon D, Donnio B, Schröder M. Metal-directed columnar phase formation in tetrahedral zinc(ii) and manganese(ii) metallomesogens. NEW J CHEM 2008. [DOI: 10.1039/b710745e] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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35
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Jensen TB, Terazzi E, Donnio B, Guillon D, Piguet C. Thermodynamics of dimerization in solution as a rational tool for inducing nematic vs. smectic organizations in lanthanidomesogens. Chem Commun (Camb) 2008:181-3. [DOI: 10.1039/b714861e] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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36
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Maringa N, Lenoble J, Donnio B, Guillon D, Deschenaux R. Liquid-crystalline methanofullerodendrimers which display columnar mesomorphism. ACTA ACUST UNITED AC 2008. [DOI: 10.1039/b717105f] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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37
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Escande A, Guénée L, Nozary H, Bernardinelli G, Gumy F, Aebischer A, Bünzli JCG, Donnio B, Guillon D, Piguet C. Rational Tuning of Melting Entropies for Designing Luminescent Lanthanide-Containing Thermotropic Liquid Crystals at Room Temperature. Chemistry 2007; 13:8696-713. [PMID: 17665377 DOI: 10.1002/chem.200700560] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
The connection of twelve peripheral and divergent dodecyloxy chains to a central tridentate aromatic binding unit provides the dodecacatenar ligand L11, for which room-temperature mesomorphism is detected. An enthalpically unbalanced large melting entropy (DeltaSmL11=226 J mol(-1) K(-1)) results from the programmed microsegregation induced in the crystalline phase, a phenomenon which is maintained in the associated lanthanide complexes [Ln(L11)(NO3)3] and [Ln(L11)(CF3CO2)3]2. Low-temperature melting processes (-43<or=Tm<or=-25 degrees C) producing room-temperature hexagonal columnar liquid-crystalline phases thus result for these novel lanthanidomesogens. A combined photophysical (high-resolution emission spectroscopy), thermodynamic (differential scanning calorimetry, DSC) and structural (small-angle X-ray diffraction, SA-XRD) investigation of the melting process shows minor structural changes occurring between the crystal (Cr) and the hexagonal columnar mesophase (Colh) in the complexes, which allows the assignment of the existence of these unusual first-order phase transitions to the negligible mixing entropy produced by the two viscous phases at low temperature. Extension of the concept of chemical tuning of melting entropies for the global design of room-temperature metallomesogens and liquid crystals is discussed.
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Affiliation(s)
- Aude Escande
- Department of Inorganic, Analytical and Applied Chemistry, University of Geneva, 30 quai E. Ansermet, -1211 Geneva 4, Switzerland
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Camerel F, Ziessel R, Donnio B, Bourgogne C, Guillon D, Schmutz M, Iacovita C, Bucher JP. Formation of gels and liquid crystals induced by PtPt and pi-pi* interactions in luminescent sigma-alkynyl platinum(II) terpyridine complexes. Angew Chem Int Ed Engl 2007; 46:2659-62. [PMID: 17171742 DOI: 10.1002/anie.200604012] [Citation(s) in RCA: 228] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Franck Camerel
- Laboratoire de Chimie Moléculaire, ECPM, UMR 7509, CNRS Université Louis Pasteur, 25 rue Becquerel, 67087 Strasbourg Cedex 02, France
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Lenoble J, Campidelli S, Maringa N, Donnio B, Guillon D, Yevlampieva N, Deschenaux R. Liquid−Crystalline Janus-Type Fullerodendrimers Displaying Tunable Smectic−Columnar Mesomorphism. J Am Chem Soc 2007; 129:9941-52. [PMID: 17658747 DOI: 10.1021/ja071012o] [Citation(s) in RCA: 90] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Janus-type liquid-crystalline fullerodendrimers were synthesized via the 1,3-dipolar cycloaddtition of two mesomorphic dendrons and C60. By assembling poly(aryl ester) dendrons functionalized with cyanobiphenyl groups, displaying lamellar mesomorphism, with poly(benzyl ether) dendrons carrying alkyl chains, which display columnar mesomorphism, we could tailor by design the liquid-crystalline properties of the title compounds as a function of each dendron size. The liquid-crystalline properties were examined by polarized optical microscopy, differential scanning calorimetry, and X-ray diffraction. Depending on the dendrimer generations, smectic (SmC and/or SmA phases) or columnar (Colr-c2mm or Colr-p2gg phases) mesomorphism was obtained. The supramolecular organization is governed by (1) the adequacy of the cross-sectional area of the dendrons, (2) the microsegregation of the dendrimer, (3) the deformation of the dendritic core, and (4) the dipolar interactions between the cyanobiphenyl groups. Comparison of the mesomorphic properties of two fullerodendrimers with those of model compounds (fullerene-free analogues) indicated that the C60 unit does not influence the type of mesophase that is formed. Molecular properties determined in solution (permanent dipole moment, specific dielectric polarization, molar Kerr constant) confirm that microsegregation persists in solution and strengthen the models proposed for the structure of the mesophases.
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Affiliation(s)
- Julie Lenoble
- Institut de Chimie, Université de Neuchâtel, Avenue de Bellevaux 51, Case Postale 158, 2009 Neuchâtel, Switzerland
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Abstract
In recent years, there has been an increasing interest in the field of liquid crystalline dendrimers. Such a fast development is, among other things, driven by the multiple possibilities offered by combining the mesomorphic properties of single mesogenic subunits with the supermolecular and versatile architectures of dendrimers to yield a new class of highly functional materials. The induction and the control of the mesomorphic properties (phase type and stability) in dendrimers can be achieved by a dedicated molecular design which depends on the chemical nature and structure of both the functional groups and the dendritic matrix. In particular, the intrinsic connectivity of the dendrimer such as the multivalency of the focal core and the multiplicity of the branches, both controlling the geometrical rate of growth, or the dendritic generation, plays a crucial role and influences at various stages the subtle relationships between the supermolecular structure and the mesophase structure and stability. In this critical review article, an account of the various types of dendritic systems that form liquid-crystalline mesophases along with a description of the self-organization of representative case-study supermolecules into liquid crystalline mesophases will be discussed. Some basics of thermotropic liquid crystals and dendrimers will be given in the introduction. Then, in the following sections, selected examples including side-chain, main-chain, fullerodendrimers, shape-persistent dendrimers, supramolecular dendromesogens and metallodendrimers, as representative families of LC dendrimers, will be described. In the conclusion some further developments will be highlighted. This review will not cover liquid crystalline hyperbranched and dendronized polymers that might be considered as being somehow less structurally "perfect".
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Affiliation(s)
- Bertrand Donnio
- Institut de Physique et Chimie des Matériaux de Strasbourg, Groupe des Matériaux Organiques, UMR 7504--CNRS/Université Louis Pasteur, 23 rue du Loess, BP 43, F-67034 Strasbourg Cedex 2, France.
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Matraszek J, Mieczkowski J, Pociecha D, Gorecka E, Donnio B, Guillon D. Molecular Factors Responsible for the Formation of the Axially Polar Columnar Mesophase ColhPA. Chemistry 2007; 13:3377-85. [PMID: 17226867 DOI: 10.1002/chem.200601192] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
The structure of hexacatenar bent-shape molecules has been systematically modified in order to determine the main molecular factors responsible for the appearance of the axially polar columnar mesophase. It was found that the stability of the polar phase is very sensitive to the subtle modifications of the molecular shape: the phase is solely preserved if the modification is made at the terminal parts of the mesogenic core, whilst any other modifications destabilize the phase. It can be concluded that the main factor driving the transition between the phase made of flat supramolecular discs and the axially polar phase made of the cone-like units is the ability to fulfill close packing conditions in order to eliminate voids between neighboring molecular rigid cores.
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Affiliation(s)
- Joanna Matraszek
- Department of Chemistry, Warsaw University, ul. Pasteura 1, 02-093 Warsaw, Poland
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Camerel F, Ziessel R, Donnio B, Bourgogne C, Guillon D, Schmutz M, Iacovita C, Bucher JP. Cover Picture: Formation of Gels and Liquid Crystals Induced by Pt⋅⋅⋅Pt and π–π* Interactions in Luminescent σ-Alkynyl Platinum(II) Terpyridine Complexes (Angew. Chem. Int. Ed. 15/2007). Angew Chem Int Ed Engl 2007. [DOI: 10.1002/anie.200790056] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Camerel F, Ziessel R, Donnio B, Bourgogne C, Guillon D, Schmutz M, Iacovita C, Bucher JP. Titelbild: Formation of Gels and Liquid Crystals Induced by Pt⋅⋅⋅Pt and π-π* Interactions in Luminescent σ-Alkynyl Platinum(II) Terpyridine Complexes (Angew. Chem. 15/2007). Angew Chem Int Ed Engl 2007. [DOI: 10.1002/ange.200790056] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Terazzi E, Guénée L, Morgantini PY, Bernardinelli G, Donnio B, Guillon D, Piguet C. Cover Picture: Tuning the Polarization Along Linear Polyaromatic Strands for Rationally Inducing Mesomorphism in Lanthanide Nitrate Complexes (Chem. Eur. J. 6/2007). Chemistry 2007. [DOI: 10.1002/chem.200790017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Terazzi E, Guénée L, Morgantini PY, Bernardinelli G, Donnio B, Guillon D, Piguet C. Tuning the Polarization Along Linear Polyaromatic Strands for Rationally Inducing Mesomorphism in Lanthanide Nitrate Complexes. Chemistry 2007; 13:1674-91. [PMID: 17225230 DOI: 10.1002/chem.200601389] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
The opposite orientation of the ester spacers in the rodlike ligands L 4C12 (benzimidazole-OOC-phenyl) and L 5C12 (benzimidazole-COO-phenyl) drastically changes the electronic structure of the aromatic systems, without affecting their meridional tricoordination to trivalent lanthanides, Ln(III), and their thermotropic liquid crystalline (i.e., mesomorphic) behaviors. However, the rich mesomorphism exhibited by the complexes [Ln(L 4C12)(NO3)3] (Ln=La-Lu) vanishes in [Ln(L 5C12)(NO3)3], despite superimposable molecular structures and comparable photophysical properties. Density functional theory (DFT) and time-dependant DFT calculations performed in the gas phase show that the inversion of the ester spacers has considerable effects on the electronic structure and polarization of the aromatic groups along the strands, which control residual intermolecular interactions responsible for the formation of thermotropic liquid-crystalline phases. As a rule of thumb, an alternation of electron-poor and electron-rich aromatic rings favors intermolecular interactions between the rigid cores and consequently mesomorphism, a situation encountered for L 4C12, L 5C12, [Ln(L 4C12)(NO3)3], but not for [Ln(L 5C12)(NO3)3]. The intercalation of an additional electron-rich diphenol ring on going from [Ln(L 5C12)(NO3)3] to [Ln(L 6C12)(NO3)3] restores mesomorphism despite an unfavorable orientation of the ester spacers, in agreement with our simple predictive model.
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Affiliation(s)
- Emmanuel Terazzi
- Department of Inorganic, Analytical and Applied Chemistry, University of Geneva, 30 quai E. Ansermet, 1211 Geneva 4, Switzerland
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Abstract
Amphiphiles with a dendritic structure are attractive materials as they combine the features of dendrimers with the self-assembling properties and interfacial behavior of amphiphiles. We have designed and synthesized three series of segmented amphiphilic block co-dendrimers (Janus-type) and studied their interfacial properties on the Langmuir trough. Various behaviors are observed with, as a rule, the lowest generation dendrimers behaving more or less like traditional amphiphiles while the larger molecules tend to exhibit more complicated isotherms, with a non-straightforward temperature dependence, one particular molecule seemingly forming supramolecular assemblies spontaneously. The results presented here, obtained on a series of molecules where many parameters have been varied systematically, show the limits that should be kept in mind when designing amphiphilic dendrimers.
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Affiliation(s)
- Izabela Bury
- Institut de Physique et Chimie des Matériaux de Strasbourg, Groupe des Matériaux Organiques, UMR7504 (CNRS-Université Louis Pasteur), Strasbourg Cedex 2, France
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Aebischer OF, Aebischer A, Donnio B, Alameddine B, Dadras M, Güdel HU, Guillon D, Jenny TA. Controlling the lateral aggregation of perfluoroalkylated hexa-peri-hexabenzocoronenes. ACTA ACUST UNITED AC 2007. [DOI: 10.1039/b616057c] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Mamlouk H, Heinrich B, Bourgogne C, Donnio B, Guillon D, Felder-Flesch D. A nematic [60]fullerene supermolecule: when polyaddition leads to supramolecular self-organization at room temperature. ACTA ACUST UNITED AC 2007. [DOI: 10.1039/b700460e] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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