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  1. No Access

    Article

    Non-destructive depth-dependent morphological characterization of ferroelectric:semiconducting polymer blend films

    Herein, we investigate the technologically relevant blend of the ferroelectric polymer poly(vinylidene fluoride-co-trifluoroethylene), P(VDF-co-TrFE), with the semiconducting polymer poly(3-hexylthiophene), P3HT,...

    N. Spampinato, G. Pecastaings, M. Maglione, G. Hadziioannou… in Colloid and Polymer Science (2021)

  2. No Access

    Article

    Growth Front Roughening of Room Temperature Deposited Oligomer Thin Films

    Growth front scaling aspects are investigated for PPV-type oligomer thin films vapor- deposited onto silicon substrates at room temperature. For film thickness d~15-300 nm, commonly used in optoelectronic devi...

    D. Tsamouras, G. Palasantzas, J. Th. M. De Hosson… in MRS Online Proceedings Library (2011)

  3. No Access

    Article

    Organic Solar Cells Based on Evaporated Planar and Bulk Heterojunctions of a PPVpentamer and C60

    The technique of vacuum evaporation has been applied to deposit organic photovoltaic active layers. The five-ring PPV-type oligomer 2-methoxy-5-(2’-ethylhexyloxy)-1, 4-bis((4’, 4”-bisstyryl)styrylbenzene) (MEH...

    W. Geens, T. Aernouts, J. Poortmans, G. Hadziioannou in MRS Online Proceedings Library (2011)

  4. No Access

    Article

    Photo-Electron Spectroscopy Study of Energy Levels in Conjugated Oligomers

    We report on the valence orbital structure of poly(para-phenylenevinylene) (PPV)-like oligomers. We studied these molecules as isolated oligomers in the gas phase, as well as in thin films deposited on metal subs...

    S. C. Veenstra, A. Heeres, U. Stalmach, J. Wildeman… in MRS Online Proceedings Library (2011)

  5. No Access

    Article

    Self-assembly of rod-coil block copolymers from weakly to moderately segregated regimes

    We report on the self-assembly behaviour of two homologue series of rod-coil block copolymers in which, the rod, a π -conjugated polymer, is maintained fixed in size and chemical structure, while the coil is a...

    N. Sary, C. Brochon, G. Hadziioannou, R. Mezzenga in The European Physical Journal E (2007)

  6. No Access

    Article

    Fullerene–oligophenyleneethynylene conjugates: relationships between charge-carrier mobility, photovoltaic characteristics and chemical structure

    The charge-mobility properties of thin films prepared from different fullerene–oligophenyleneethynylene conjugates are reported. A direct relationship between the chemical structure, the charge-carrier mobilit...

    J.-F. Nierengarten, T. Gu, T. Aernouts, W. Geens, J. Poortmans… in Applied Physics A (2004)

  7. No Access

    Article

    On interface dipole layers between C60 and Ag or Au

    C60 layers on polycrystalline Ag and Au are studied by photoelectron spectroscopy. At these metal/C60 interfaces an electron transfer occurs from the metal to the lowest unoccupied orbital of C60. We found in the...

    S.C. Veenstra, A. Heeres, G. Hadziioannou, G.A. Sawatzky, H.T. Jonkman in Applied Physics A (2002)

  8. No Access

    Article

    Compatibilization of low-density polyethylene/polystyrene blends by segmented EB(PS-block-EB) n block copolymers

    Hydrogenatedsegmented poly[butadiene-block-(styrene-block-butadiene)n] block copolymers, which were developed by use of a polymeric iniferter technique, were tested on their compatibilizing effectiveness for (10/...

    E. Kroeze, G. ten Brinke, G. Hadziioannou in Polymer Bulletin (1997)

  9. No Access

    Article

    Nanorheology of strongly confined oligomeric lubricants

    Lubricant films confined in nanometric slit pores and subjected to shear flow are studied by non-equilibrium molecular dynamics in a planar Couette flow geometry. An inhomogeneous, layered density profile is d...

    E. Manias, G. ten Brinke, G. Hadziioannou in Journal of Computer-Aided Materials Design (1996)

  10. No Access

    Article

    Scattering by cyclic polymers and copolymers at large scattering vectors

    General formulae allowing the evaluation of the form factors of cyclic block copolymers are established and graphs for cyclic copolymers of the form (A-B)N are shown. WhenN is large, the linear and the cyclic cop...

    M. Kosmas, H. Benoît, G. Hadziioannou in Colloid and Polymer Science (1994)

  11. No Access

    Article

    Neutron reflectivity study of adsorbed diblock copolymers

    In this paper, we summarize our cumulative work on neutron reflectivity studies of polystyrene-poly(vinyl-2-pyridine) (PS-PVP) and polystyrene-polyethylene oxide (PS-PEO) adsorbed at a quartz-solvent interface...

    G. S. Smith, C. Toprakcioglu, S. M. Baker, J. B. Field, L. Dai… in Il Nuovo Cimento D (1994)

  12. No Access

    Article

    Craze fibril extension ratio measurements in glassy block copolymers

    The extension ratios of crazes in triblock copolymer films of poly(2-vinylpyridine)-polystyrene-poly(2-vinylpyridine) [PVP-PS-PVP] which had lamellar microphase domain structure were measured by transmission e...

    C. Creton, E. J. Kramer, G. Hadziioannou in Colloid and Polymer Science (1992)

  13. No Access

    Article

    Synthesis of poly[(silanylene)thiophene]s

    Poly[(silanylene)thiopene]s, copolymers with alternating thiophene, 2,2′-bithiophene, or 2,2′:5′,5″-terthiophene and mono-, di-, or tetrasilanylene units, were prepared by condensation of the dilithium salts o...

    J. Wildeman, J. K. Herrema, G. Hadziioannou… in Journal of Inorganic and Organometallic Po… (1991)

  14. No Access

    Article

    Interaction between components of polymer blends by scattering

    The Flory interaction coefficient χAB of binary polymer blends of high concentration may be determined from the study of light, x-ray, or neutron scattering at q=0. Neutron scattering measurements are particularl...

    G. Hadziioannou, J. Gilmer, R. S. Stein in Polymer Bulletin (1983)

  15. No Access

    Article

    ≪Monocristaux≫ de copolymères triséquencés styrène/isoprène/styrène présentant la structure cylindrique II. Étude de la déformation par élongation

    On a étudié par diffraction des rayons X aux petits angles des ≪monocristaux≫ de copolymère triséquencé styréne/isopréne/styréne présentant la structure cylindrique. On a porté son attention sur la déformation...

    G. Hadziioannou, A. Mathis, A. Skoulios in Colloid and Polymer Science (1979)

  16. No Access

    Article

    ≪Monocristaux≫ de copolymères triséquencés styrène/isoprène/styrène présentant la structure cylindrique III. Étude de la déformation par cisaillement

    On a étudié par diffraction des rayons X aux petits angles des ≪monocristaux≫ de copolymère triséquencé styrène/isoprène/styrène présentant la structure cylindrique. On a porté l'attention sur la déformation s...

    G. Hadziioannou, A. Mathis, A. Skoulios in Colloid and Polymer Science (1979)

  17. No Access

    Article

    Obtention de ≪ monocristaux ≫ de copolymères triséquencés styrène/isoprène/styrène par cisaillement plan

    When submitted to a plane shear flow in the molten state, SIS three-block copolymers orient themselves in a well developed single-crystalline texture. In the case of a cylindrical structure, the cylinders are ...

    G. Hadziioannou, A. Mathis, A. Skoulios in Colloid and Polymer Science (1979)

  18. No Access

    Article

    ≪ Monocristaux ≫ de copolymères triséquencés styrène/isoprène/styrène présentant la structure cylindrique: I. Étude de l'orientation par diffraction des rayons X aux petits angles

    Des copolymères triséquencés polystyrène-polyisoprène-polystyrène, présentant la structure en cylindres ont été soumis à un cisaillement plan.

    G. Hadziioannou, A. Mathis, A. Skoulios in Colloid and Polymer Science (1979)