76
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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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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77
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Ghobril C, Heinrich B, Dane EL, Grinstaff MW. Synthesis of Hydrophobic Carbohydrate Polymers and Their Formation of Thermotropic Liquid Crystalline Phases. ACS Macro Lett 2014; 3:359-363. [PMID: 24804154 PMCID: PMC3999795 DOI: 10.1021/mz5000703] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2014] [Accepted: 03/19/2014] [Indexed: 12/18/2022]
Abstract
The first synthesis of enantiopure glucose octyl ether polyamido-saccharides (GOE-PAS) with a defined molecular weight and narrow dispersity is reported using a controlled anionic ring-opening polymerization of a glucose-derived β-lactam sugar monomer possessing octyl ether chains. This new polymer structure is characterized by NMR, infrared (IR), optical rotation, gel permeation chromatography (GPC), and thermogravimetric analysis (TGA). At room temperature, the polymers form lamellar (Lam) phases. Upon heating to mild temperatures (ca. 60 °C), the shortest polymer shows a direct transition to the isotropic (Iso) liquid state, while the longer polymers give rise to a hexagonal columnar (Colh) phase before becoming isotropic at higher temperatures (ca. 120 °C).
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78
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Schwartz PO, Biniek L, Zaborova E, Heinrich B, Brinkmann M, Leclerc N, Méry S. Perylenediimide-Based Donor–Acceptor Dyads and Triads: Impact of Molecular Architecture on Self-Assembling Properties. J Am Chem Soc 2014; 136:5981-92. [DOI: 10.1021/ja4129108] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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79
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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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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80
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Choi EY, Mazur L, Mager L, Gwon M, Pitrat D, Mulatier JC, Monnereau C, Fort A, Attias AJ, Dorkenoo K, Kwon JE, Xiao Y, Matczyszyn K, Samoc M, Kim DW, Nakao A, Heinrich B, Hashizume D, Uchiyama M, Park SY, Mathevet F, Aoyama T, Andraud C, Wu JW, Barsella A, Ribierre JC. Photophysical, amplified spontaneous emission and charge transport properties of oligofluorene derivatives in thin films. Phys Chem Chem Phys 2014; 16:16941-56. [DOI: 10.1039/c4cp01134a] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We investigate the charge transport, photophysical and amplified spontaneous emission properties of a series of monodisperse solution-processable oligofluorenes functionalized with hexyl chains at the C9 position of each fluorene unit.
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81
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Kozhevnikov VN, Donnio B, Heinrich B, Bruce DW. Morphology-driven absorption and emission colour changes in liquid-crystalline, cyclometallated platinum(ii) complexes. Chem Commun (Camb) 2014; 50:14191-3. [DOI: 10.1039/c4cc06958g] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Platinum(ii) complexes of 1,3-bis(2-pyridyl)benzene containing two alkyl chains are unexpectedly mesomorphic and capable of changing absorption and emission colour depending on the phase obtained after thermal treatment.
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82
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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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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83
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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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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84
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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] [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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85
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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] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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86
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Sun Y, Chang H, Kabatek M, Song YY, Wang Z, Jantz M, Schneider W, Wu M, Montoya E, Kardasz B, Heinrich B, te Velthuis SGE, Schultheiss H, Hoffmann A. Damping in yttrium iron garnet nanoscale films capped by platinum. PHYSICAL REVIEW LETTERS 2013; 111:106601. [PMID: 25166689 DOI: 10.1103/physrevlett.111.106601] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2012] [Revised: 03/29/2013] [Indexed: 06/03/2023]
Abstract
Strong damping enhancement in nm-thick yttrium iron garnet (YIG) films due to Pt capping layers was observed. This damping is substantially larger than the expected damping due to conventional spin pumping, is accompanied by a shift in the ferromagnetic resonance field, and can be suppressed by the use of a Cu spacer in between the YIG and Pt films. The data indicate that such damping may originate from the ferromagnetic ordering in Pt atomic layers near the YIG/Pt interface and the dynamic exchange coupling between the ordered Pt spins and the spins in the YIG film.
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87
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Roeser J, Heinrich B, Bourgogne C, Rawiso M, Michel S, Hubscher-Bruder V, Arnaud-Neu F, Méry S. Dendronized Polymers with Silver and Mercury Cations Recognition: Complexation Studies and Polyelectrolyte Behavior. Macromolecules 2013. [DOI: 10.1021/ma400348v] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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88
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Rastei MV, Heinrich B, Gallani JL. Puckering stick-slip friction induced by a sliding nanoscale contact. PHYSICAL REVIEW LETTERS 2013; 111:084301. [PMID: 24010441 DOI: 10.1103/physrevlett.111.084301] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/28/2013] [Indexed: 06/02/2023]
Abstract
An atomic force microscope reveals that the sliding of a nanotip on a graphite surface occurs through a nanoscale stick-slip mechanism. The angle between the sliding direction and a stiff crystallographic axis determines the periodicity of the slip events defining domains of various friction properties. The experimental data are interpreted using the reaction rate theory, with the energy barrier driven by a local deformation of the surface and a thermally activated relaxation.
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89
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Terazzi E, Zaïm A, Bocquet B, Varin J, Guénée L, Dutronc T, Lemonnier J, Floquet S, Cadot E, Heinrich B, Donnio B, Piguet C. Implementing Liquid‐Crystalline Properties in Single‐Stranded Dinuclear Lanthanide Helicates (Eur. J. Inorg. Chem. 19/2013). Eur J Inorg Chem 2013. [DOI: 10.1002/ejic.201390083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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90
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Terazzi E, Zaïm A, Bocquet B, Varin J, Guénée L, Dutronc T, Lemonnier J, Floquet S, Cadot E, Heinrich B, Donnio B, Piguet C. Implementing Liquid‐Crystalline Properties in Single‐Stranded Dinuclear Lanthanide Helicates. Eur J Inorg Chem 2013. [DOI: 10.1002/ejic.201300628] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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91
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Domínguez C, Heinrich B, Donnio B, Coco S, Espinet P. Room-Temperature Columnar Mesophases in Triazine-Gold Thiolate Metal-Organic Supramolecular Aggregates. Chemistry 2013; 19:5988-95. [DOI: 10.1002/chem.201204256] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2012] [Revised: 12/30/2012] [Indexed: 11/11/2022]
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92
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Goldstein LJ, Oliveria CT, Heinrich B, Stemmer SM, Mala C, Selder S, Bevan P, Harbeck N. Abstract P5-20-01: A randomized double-blind phase II study of the combination of oral WX-671 plus capecitabine vs. capecitabine monotherapy in first-line HER2− negative metastatic breast cancer (MBC). Cancer Res 2012. [DOI: 10.1158/0008-5472.sabcs12-p5-20-01] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background: uPA and its inhibitor PAI-1 play a key role in tumor invasion, metastasis and tumor growth. High levels of uPA and PAI-1 in breast tumors are statistically significant prognostic factors of disease-free (DFS) and overall survival (OS), which were validated at the highest level of evidence, as well as predictors for benefit of adjuvant chemotherapy. WX-UK1 is an active site competitive inhibitor of uPA with an inhibition constant in the submicromolar range. WX-671 (upamostat) is an oral prodrug of WX-UK1. In preclinical animal tumor models, both WX-UK1 and WX-671 have been shown to reduce the growth rate of implanted tumors, to inhibit invasion, and reduce metastases. This current proof of concept study is designed to substantiate the anti-metastatic properties of upamostat for patients appropriate for first line therapy for MBC.
Methods: Female patients aged >18, with HER2 negative MBC appropriate for first line monotherapy with capecitabine, with adequate performance status, organ function, bone marrow reserve without brain metastases were eligible. Patients were randomized in a double-blind fashion to receive upamostat (200mg orally daily for 21 days) plus capecitabine (1000 mg/m2 orally twice daily for 14 days) vs. capecitabine (1000 mg/m2 orally twice daily for 14 days) in 3 week treatment cycles until progressive disease or unacceptable toxicity. The primary endpoint is to evaluate the efficacy of the combination of upamostat plus capecitabine compared to monotherapy as assessed by comparison of progression free survival. The secondary objectives are OS, objective response rates, safety and tolerability, and to assess the pharmacokinetics (PK) of upamostat and capecitabine when combined.
Results: Between August 2008 and April 2011,132 patients were enrolled. 17 patients are still receiving treatment. 26% of the patients are characterized as triple negative, 13% as only Estrogen Receptor (ER) positive and 4% as only Progesteron Receptor (PR) positive. 57 % of the patients are ER and PR positive.
Conclusions: Progression free survival, response rates and safety will be reported. This abstract is being submitted as a placeholder. A completed abstract will be submitted when the analyses are completed.
Citation Information: Cancer Res 2012;72(24 Suppl):Abstract nr P5-20-01.
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93
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Heinrich B, From M, Cochran J, Liao LX, Celiński Z, Schneider C, Myrtle K. Studies of Exchange Coupling in Fe (001) Whisker/Cr/Fe Structures using BLS and Rheed Techniques. ACTA ACUST UNITED AC 2012. [DOI: 10.1557/proc-313-119] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
ABSTRACTThe conditions for an almost perfect growth of smooth Cr (001) films on an iron whisker substrate have been investigated by means of reflection high energy electron diffraction (RHEED). The exchange interaction between 20 Monolayer thick Fe (001) films separated from a bulk whisker Fe (001) substrate by a variable number of Cr (001) Monolayers (ML) has been investigated by means of Brillouin light scattering experiments (BLS). These experiments show unambiguously that the exchange coupling strength between the iron film and the iron whisker can be described by a short wavelength oscillatory term superposed on a slowly varying antiferromagnetic background. The BLS data enabled one to separate the bilinear and the biquadratic contributions to the antiferromagnetic exchange coupling terms. Both the bilinear and the biquadratic coupling strengths exhibited a short period oscillatory dependence on the Cr interlayer thickness (∼2 Monolayers). Maxima in the bilinear antiferromagnetic coupling strength occur for an odd number of Cr Monolayers. This observation is not in agreement with first principles calculations. The first phase inversion has been found to occur between 4 and 5 ML of Cr.
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94
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Heinrich B, Arrott AS, Cochran JF, Urquhart KB, Myrtle K, Celinski Z, Zhong QM. In-Situ Techniques for Studying Epitaxially Grown Layers and Determining their Magnetic Properties. ACTA ACUST UNITED AC 2012. [DOI: 10.1557/proc-151-177] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
ABSTRACTUltrathin films of bcc Fe (001) on Ag (001) and Fe/Ni (001) bilayers on Ag were grown by molecular beam epitaxy. A wide range of surface science tools (RHEED, REELFS, AES, and XPS) were employed to establish the quality of epitaxial growth. Ferromagnetic resonance and Brillouin light scattering were used to extract the magnetic properties. Emphasis was placed on the study of magnetic anisotropies. Large uniaxial anisotropies with the easy axis perpendicular to the film surface were observed in all ultrathin structures studied. In sufficiently thin samples the saturation magnetization was oriented perpendicular to the film surface in the absence of an applied field. It has been demonstrated that in bcc Fe films the uniaxial perpendicular anisotropy originates at the film interfaces. Fe/Ni bilayers were also investigated. Ni grows in the pure bcc structure for the first 3–6ML and then transforms to a new structure which exhibits unique magnetic properties. Transformed ultrathin bilayers possesses large in-plane 4th order anisotropies far surpassing those observed in bulk Fe and Ni. The large 4th order anisotropies originate in crystallographic defects formed during the Ni lattice transformation.
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95
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Jo TS, McCurdy WL, Tanthmanatham O, Kim TK, Han H, Bhowmik PK, Heinrich B, Donnio B. Synthesis and characterization of luminescent tricationic salts of mesitylene and stilbazolium moieties. J Mol Struct 2012. [DOI: 10.1016/j.molstruc.2012.03.024] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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96
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Myśliwiec D, Donnio B, Chmielewski PJ, Heinrich B, Stępień M. Peripherally fused porphyrins via the Scholl reaction: synthesis, self-assembly, and mesomorphism. J Am Chem Soc 2012; 134:4822-33. [PMID: 22239060 DOI: 10.1021/ja210991f] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Oxidative coupling of activated aryl groups attached to β-positions of the porphyrin ring provides convenient access to derivatives containing peripherally fused phenanthrene and benzo[g]chrysene units. Tetra(benzochryseno)porphyrin, reported here for the first time, contains a nonplanar, sterically locked π system and shows very intense electronic absorptions in the Q range of the electronic spectrum. Tetraphenanthroporphyrins show a tendency to aggregate in solution. In one case, a discrete dimer is formed, whose structure was investigated spectroscopically and theoretically. Derivatives bearing long alkyl chains are mesomorphic and exhibit columnar phases (tetraphenanthroporphyrins) and a monoclinic 3D phase (tetrabenzochrysenoporphyrin). The symmetry of column packing in the columnar phases is dependent on the number of alkyl chains per molecule. X-ray diffraction measurements show that, in spite of their nonplanarity, the aromatic cores in the mesophases are tightly stacked within the column. The corresponding stacking patterns were derived from the structure of the dimer, on the basis of geometrical analysis and molecular modeling.
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97
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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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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98
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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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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99
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Lincker F, Attias AJ, Mathevet F, Heinrich B, Donnio B, Fave JL, Rannou P, Demadrille R. Influence of polymorphism on charge transport properties in isomers of fluorenone-based liquid crystalline semiconductors. Chem Commun (Camb) 2012; 48:3209-11. [DOI: 10.1039/c2cc17276c] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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100
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Romain C, Heinrich B, Laponnaz SB, Dagorne S. A robust zirconium N-heterocyclic carbene complex for the living and highly stereoselective ring-opening polymerization of rac-lactide. Chem Commun (Camb) 2012; 48:2213-5. [DOI: 10.1039/c2cc16819g] [Citation(s) in RCA: 111] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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