TY - JOUR A1 - Neumann, Werner A1 - Kasper, Sabine A1 - Kasper, Roberto T1 - Discharge Currents in Polymer Solids between Blocking Contacts Y1 - 1991 SN - 0-7803-0113- 7 ER - TY - JOUR A1 - Neumann, Werner T1 - Stromträgerrelaxationen in hochohmigen Polymerfestkörpern Y1 - 1991 ER - TY - JOUR A1 - Reiche, Jürgen A1 - Dietel, Reinhard A1 - Lemmetyinen, Helge A1 - Janietz, Dietmar A1 - Lemmetyinen, Helge A1 - Brehmer, Ludwig T1 - Edge-on Langmuir-Blodgett multilayers derived from disc-shaped multiyne mesogens N2 - Langmuir-Blodgett(LB) multilayers were prepared from disc-shaped multiyne mesogens based on amphiphilic alkyl pentakis(aryl-ethynyl)benzene ethers. The two compounds used are characterized by five hydrophobic flexible chains and one hydrophilic substituent at the terminal position of the alkoxy chain. The LB films were analysed by X-ray scattering and spectroscopic measurements. An edge-on arrangement of the two discotic pentaalkynes within Y-type bilayers with a different packing density proved to be possible for the LB films of both compounds. Y1 - 1992 ER - TY - THES A1 - Sprengel, Jens-Uwe T1 - Analyse der Transfermatrizen geschichteter anisotroper Medien Y1 - 1992 ER - TY - JOUR A1 - Reiche, Jürgen A1 - Pietsch, Ullrich A1 - Fink, Hans-Peter A1 - Lemmetyinen, Helge T1 - A comparison fo x-ray methods for structure refinement of Langmuir-Blodgett multilayers N2 - The possibilities and limits of structure refinement of Langmuir-Blodgett films by means of symmetrical reflection of X- rays are described using the example of a stearic acid multilayer. Three different techniques for the determiantion of the electron density profile from reflectivity data are compared; a Fourier method, a Patterson method, and model calculations. The important role of the a priori information for finding the besft structure model is outlined. Y1 - 1992 ER - TY - JOUR A1 - Mikelskis, Helmut T1 - Combining issues of "girl-suited" science teaching, STS and constructivism in a physics textbook Y1 - 1992 SN - 0157-244X ER - TY - JOUR A1 - Mikelskis, Helmut T1 - Physiklernen heißt: Brücken schlagen zwischen toten Zahlen und sinnlichem Dasein Y1 - 1992 SN - 3-89088-061-4 ER - TY - JOUR A1 - Mikelskis, Helmut T1 - Wo bleibt das Phänomen im Experiment? Y1 - 1992 SN - 3-88064-212-5 ER - TY - THES A1 - Wedel, Armin T1 - Untersuchungen zum Dipolschaltverhalten an Polymerfestkörpern Y1 - 1992 ER - TY - THES A1 - Gerhard, Reimund T1 - Präparation und Untersuchung von Festkörperschichten für Sensorik und Photonik : eine Zusammenstellung von Veröffentlichungen Y1 - 1992 ER - TY - JOUR A1 - Mikelskis, Helmut T1 - Schneller als der Wind : zur Behandlung des Darrieus-Windrotors im Physikunterricht Y1 - 1993 ER - TY - JOUR A1 - Mikelskis, Helmut T1 - Zukunftsperspektiven physikdidaktischer Forschung im vereinigten Deutschland Y1 - 1993 SN - 3-88064-223-0 ER - TY - BOOK A1 - Duit, Reinders A1 - Mikelskis, Helmut T1 - Physik, um die Welt zu begreifen : ein Lehrbuch für die Jahrgangsstufe 5/6 ; [Hauptbd.], Nordrhein- Westfalen Y1 - 1993 SN - 3-425-03671-8 PB - Diesterweg CY - Frankfurt am Main ER - TY - BOOK A1 - Duit, Reinders A1 - Mikelskis, Helmut T1 - Physik - Chemie, um die Welt zu begreifen : ein Lehrbuch für die Orientierungsstufe ; [Hauptbd.], Niedersachsen Y1 - 1993 SN - 3-425-03675-0 VL - 3675 PB - Diesterweg CY - Frankfurt am Main ER - TY - JOUR A1 - Mikelskis, Helmut T1 - Zur Ökologisierung des Lernprozesses : Versuch über einen vernachlässigten Aspekt von Umweltbildung Y1 - 1993 SN - 3-89088-073-8 ER - TY - BOOK A1 - Marquardt-Mau, Brunhilde A1 - Mayer, Jürgen A1 - Mikelskis, Helmut T1 - Umwelt : Lexikon ökologisches Grundwissen Y1 - 1993 SN - 3-499-16337-3 VL - 6337 PB - Rowohlt CY - Reinbek bei Hamburg ER - TY - BOOK A1 - Hänsel, Horst A1 - Neumann, Werner A1 - Hudel, Erich T1 - Physik : Bd. 2 Elektrizität, Optik, Raum und Zeit Y1 - 1993 SN - 3-86025-304-2 VL - 2 PB - Spektrum Akad. Verl. CY - Heidelberg ER - TY - THES A1 - Pedzisz, Bozena T1 - Zur Rolle historischer Betrachtungen im Physikunterricht unter besonderer Berücksichtigung grundlegender Experimente Y1 - 1993 ER - TY - BOOK A1 - Hänsel, Horst A1 - Neumann, Werner A1 - Wedell, Reiner T1 - Physik : Bd. 1 Mechanik und Wärmelehre Y1 - 1993 SN - 3-86025-046-9 VL - 1 PB - Spektrum Akad. Verl. CY - Heidelberg ER - TY - JOUR A1 - Hubrig, Swetlana A1 - Mathys, Gautier T1 - Mass loss, magnetic field and chemical inhomogenities in the he-weak star HD 21699 Y1 - 1993 ER - TY - JOUR A1 - Janietz, Dietmar A1 - Hofmann, Dieter A1 - Reiche, Jürgen T1 - Molecular organization of amphiphilic disc-shaped penta-alkynes in LB-mono- and multilayers N2 - Amphiphilic disc-shaped penta-alkynes were studied with regard to their molecular organization in Langmuir-Blod- gett (LB) mono- and multilayers. It was found that each compound investigated forms edge-on arranged stable monolayers at the air-water interface. LB-multilayers derived from fivefold pentyl-substituted pentaynes are characterized by an edge-on ordering of the molecules within Y-type bilayers. One of these compounds, containing a hydoxy substituent as hydrophilic head group, is exemplified and two possible rectangular molecular assemblies perpendicular to the substrate, each with a columnar in-plane packing, will be discussed as a result of molecular modelling. Based on the experimental results, hexagonal layer packing in the LB-film of a disc-shaped penta-alkynyl carboxylic acid without lateral substituents proved to be possible, which, furthermore, could be confirmed by molecular mechanics simulation. Y1 - 1994 ER - TY - JOUR A1 - Hochheimer, H. D. A1 - Menon, V. A1 - Parthasarathy, R. A1 - Martin, C. R. A1 - Bechthold, Jeff A1 - Hor, P.-H. A1 - Lorenz, Bernd A1 - Spatz, J. P. T1 - High pressure study of the temperature dependence of the conductivity of template synthesized polyaniline and polypyrrole Y1 - 1994 ER - TY - JOUR A1 - Hochheimer, H. D. A1 - Menon, V. A1 - Parthasarathy, R. A1 - Martin, C. R. A1 - Bechthold, Jeff A1 - Hor, P.-H. A1 - Lorenz, Bernd A1 - Spatz, J. P. T1 - High pressure conductivity of template synthesized polypyrrole Y1 - 1994 ER - TY - JOUR A1 - Reiche, Jürgen A1 - Knochenhauer, Gerald T1 - Numerische Simulation und Röntgenbeugung an thermisch aufgedampften Multischichten perfluorierter Fettsäuren Y1 - 1994 ER - TY - JOUR A1 - Lorenz, Bernd A1 - Spatz, J. P. A1 - Hochheimer, H. D. A1 - Menon, V. A1 - Parthasarathy, R. A1 - Martin, C. R. A1 - Bechthold, Jeff A1 - Hor, P.-H. T1 - Dimensional crossover of the temperature dependence of the electrical conductivity of template synthesized polyaniline and polypyrrole Y1 - 1994 ER - TY - JOUR A1 - Lorenz, Bernd A1 - Tozer, S. W. A1 - Hochheimer, H. D. A1 - Menon, V. A1 - Parthasarathy, R. A1 - Martin, C. R. T1 - Magnetoresistance of conducting polymers Y1 - 1994 ER - TY - JOUR A1 - Lorenz, Bernd A1 - Spatz, J. P. A1 - Weishaupt, K. A1 - Hochheimer, H. D. A1 - Menon, V. A1 - Parthasarathy, R. A1 - Martin, C. R. A1 - Bechthold, Jeff A1 - Hor, P.-H. T1 - Observation of crossover from three to two dimensional variable range hopping in template synthesized polypyrrole and polyaniline Y1 - 1994 ER - TY - JOUR A1 - Reiche, Jürgen A1 - Barberka, Thomas Andreas A1 - Knochenhauer, Gerald A1 - Woolley, Martin A1 - Pietsch, Ullrich T1 - Comprehensive structure investigation and computer modelling of perfluorododecanoic acid multilayers formed by in-vacuo thermal evaporation Y1 - 1994 ER - TY - JOUR A1 - Werner, Klaus A1 - Barstow, Martin A. A1 - Holberg, J. B. A1 - Koester, D. A1 - Nousek, J. A. T1 - Extreme ultraviolet spectroscopy of white dwarfs Y1 - 1994 ER - TY - JOUR A1 - Reiche, Jürgen A1 - Barberka, Thomas Andreas A1 - Janietz, Dietmar A1 - Hofmann, Dieter A1 - Pietsch, Ullrich A1 - Brehmer, Ludwig T1 - X-ray structure investigation and computer modelling of Langmuir-Blodgett films formed from disc-shaped pentaalkines Y1 - 1994 ER - TY - JOUR A1 - Liperovskaya, E. V. A1 - Pochotelov, O. A. A1 - Liperovsky, Viktor A. A1 - Oleynik, M. A. A1 - Meister, Claudia-Veronika A1 - Christakis, N. T1 - A comparison of seismic and anthropogenic effects in the night-time sporadic E-layer of the ionosphere Y1 - 1994 ER - TY - JOUR A1 - Baier, Frank W. A1 - McGillivray, H. T. A1 - Flin, P. A1 - Krywult, J. T1 - The imadmissibility of radial number density profiles of galaxy clusters Y1 - 1994 ER - TY - JOUR A1 - Angelova, Angelina A1 - Penacorada, Florencio A1 - Stiller, Burkhard A1 - Zetzsche, Thomas A1 - Ionov, Radoslav A1 - Kamusewitz, Helmut A1 - Brehmer, Ludwig T1 - Wettability, surface morphology and stability of long chain ester multilayers obtained by different Langmuir- Blodgett deposition type Y1 - 1994 ER - TY - JOUR A1 - Janietz, Dietmar A1 - Festag, R. A1 - Schmidt, C. A1 - Wendorff, Joachim Heinz T1 - Self-organization of new oligomers containing disc-shaped side groups Y1 - 1994 ER - TY - JOUR A1 - Schulz, Burkhard A1 - Stiller, Burkhard A1 - Zetzsche, Thomas A1 - Knochenhauer, Gerald A1 - Dietel, Reinhard A1 - Brehmer, Ludwig T1 - Crystal structure of 2,5-Di(4- methoxycarbonyl-phenyl)-1,3,4-oxadiazole characterized by AFM and IR- spectroscopy Y1 - 1994 ER - TY - JOUR A1 - Lorenz, Bernd A1 - Miller, A. J. A1 - Hochheimer, H. D. A1 - Hönle, W. T1 - The observation of a new high pressure phase transition in tetramethyl ammonium tetrabromocuprate Y1 - 1994 ER - TY - JOUR A1 - Mercer, Frank W. A1 - McKenzie, M. A1 - Bruma, Maria A1 - Schulz, Burkhard T1 - Synthesis and properties of fluorinated polyimides and fluorinated poly(imide-amide)s containing pendent cyano groups Y1 - 1994 ER - TY - JOUR A1 - Liperovsky, Viktor A. A1 - Meister, Claudia-Veronika A1 - Haldoupis, Ch. A1 - Schlegel, K. T1 - Electrical currents and Farley-Buneman turbulence in mid-latitude sporadic E-layers Y1 - 1994 ER - TY - JOUR A1 - Sobisch, Titus A1 - Kühnemund, Lutz A1 - Hübner, Heike A1 - Reinisch, Gerhard A1 - Krägel, Jürgen T1 - Physicochemical aspects of in situ surfactant washing of oil contaminated soils Y1 - 1994 ER - TY - JOUR A1 - Schulz, Burkhard A1 - Knochenhauer, Gerald A1 - Brehmer, Ludwig A1 - Janietz, Silvia T1 - Stuctures and properties of aromatic poly(1,3,4-oxadiazole)s Y1 - 1994 ER - TY - JOUR A1 - Wüstneck, Rainer A1 - Miller, Reinhard A1 - Kriwanek, J. A1 - Holzbauer, H.-R. T1 - Quantification of synergistic interaction between different surfactants using a generalised Frumkin-Damaskin adsorption isotherm Y1 - 1994 ER - TY - JOUR A1 - Wüstneck, Rainer A1 - Fiedler, H. A1 - Miller, Reinhard A1 - Haage, K. T1 - Surface chemical characterisation of maleic acid mono[(4-alkyl-piperazine-2-yl)-ethylesters] : 2. The pH dependent adsorption behavior of an ampholytic surfactant Y1 - 1994 ER - TY - JOUR A1 - Hubrig, Swetlana A1 - Plachinda, S. I. A1 - Hünsch, M. A1 - Schröder, K.-P. T1 - Search for magnetic fields in late-type giants Y1 - 1994 ER - TY - JOUR A1 - Krägel, Jürgen A1 - Siegel, Stefan A1 - Miller, Reinhard A1 - Born, Michael A1 - Schano, Karl-Heinz T1 - Measurement of interfacial shear rheological properties : an automated apparatus Y1 - 1994 SN - 0927-7757 ER - TY - JOUR A1 - Bruma, Maria A1 - Mercer, Frank W. A1 - Schulz, Burkhard A1 - Dietel, Reinhard A1 - Fitch, J. A1 - Cassidy, Peter T1 - Study of crosslinking process in fluorinated poly(imide-amide)s containing pendant cyano groups Y1 - 1994 ER - TY - JOUR A1 - Eichler, Hans Joachim A1 - Haase, Alfred A1 - Menzel, Ralf A1 - Schwartz, J. T1 - Depolarization treatment and optimization of high power double pass neodym-rod amplifiers with SBS mirror Y1 - 1994 ER - TY - JOUR A1 - Brehmer, Ludwig A1 - Hahn, M. A1 - Seifert, M. A1 - Wernecke, R. A1 - Jäger, Werner A1 - Wonnenberg, R. A1 - Zehner, C. T1 - Verfahren zur Herstellung eines Feuchtsensor Y1 - 1994 ER - TY - JOUR A1 - Hänsel, Horst A1 - Waclawek, W. A1 - Weigt, Harry A1 - Kwak, A. T1 - Phthalocyanine chemisensors, part I : oscillation spectra of lanthanide diphthalocyanines Y1 - 1994 ER - TY - JOUR A1 - Wagner, R. A1 - Sonneck, G. A1 - Wüstneck, Rainer A1 - Jänicke, A. A1 - Herbst, M. A1 - Richter, L. T1 - The effect of dicyclopentadienyl moieties containing structures on the interfacial behaviour of silicone surfactants Y1 - 1994 ER - TY - JOUR A1 - Fiedler, H. A1 - Wüstneck, Rainer A1 - Weiland, B. A1 - Miller, Reinhard A1 - Haage, K. T1 - Surface chemical characterization of maleic acid mono[(4-alkyl piperazine-2-yl)- ethylesters] :1. The complex adsorption behavior of an ampholytic surfactant Y1 - 1994 ER - TY - JOUR A1 - Fruhner, Horst A1 - Wantke, K.-D. A1 - Krägel, Jürgen A1 - Kretzschmar, Günter T1 - Untersuchungen zur Stabilität der Flüssigkeitsbrücke beim Wulstbeschichtungsverfahren : IV. Einfluß viskoelastischer Fließeigenschaften auf die Stabilität der Flüssigkeitsbrücke Y1 - 1994 ER - TY - JOUR A1 - Grasnick, G. A1 - Herkner, G. A1 - Katholy, Stefan A1 - Brehmer, Ludwig T1 - Pyroelektrisches Dünnschichtelement Y1 - 1994 ER - TY - JOUR A1 - Janietz, Dietmar A1 - Möbius, Dietmar A1 - Festag, R. A1 - Wendorff, Joachim Heinz A1 - Ahuja, Rajeev C. A1 - Reiche, Jürgen T1 - Supramolecular organization of amphiphilic discotic mesogens Y1 - 1994 ER - TY - JOUR A1 - Bruma, Maria A1 - Mercer, Frank W. A1 - Schulz, Burkhard A1 - Dietel, Reinhard A1 - Fitch, J. A1 - Cassidy, Peter T1 - Study of crosslinking process in fluorinated poly(imide-amide)s containing pendant cyano groups Y1 - 1994 ER - TY - JOUR A1 - Brehmer, Ludwig A1 - Hahn, M. A1 - Seifert, M. A1 - Wernecke, R. A1 - Jäger, Werner A1 - Wonnenberg, R. A1 - Zehner, C. T1 - Feuchtesensor Y1 - 1994 ER - TY - JOUR A1 - Bruma, Maria A1 - Mercer, Frank W. A1 - Schulz, Burkhard A1 - Dietel, Reinhard A1 - Neumann, Werner T1 - Fluorinated poly(benzoxazole-imide)s Y1 - 1994 ER - TY - JOUR A1 - Lueck, H. A1 - Menzel, Ralf A1 - Sander, Rolf T1 - Inherent sample heating and temperature calibration in excited state absorption (ESA) measurements between room temperature and 77 kelvin Y1 - 1994 ER - TY - JOUR A1 - Angelova, Angelina A1 - Ionov, Radoslav A1 - Reiche, Jürgen A1 - Brehmer, Ludwig T1 - Head-to tail or head-to-head structure of Langmuir-Blodgett long chain ester multilayers? Y1 - 1994 ER - TY - JOUR A1 - Brehmer, Ludwig T1 - Dünne organische Schichten : Anforderungen und Möglichkeiten für die Sensorik Y1 - 1994 ER - TY - JOUR A1 - Bruma, Maria A1 - Schulz, Burkhard A1 - Mercer, Frank W. T1 - Synthesis and characterization of fluorinated poly(imide-pyridazine- amide)s Y1 - 1994 ER - TY - THES A1 - Frank, Bernd T1 - Thermisch stimulierte Depolarisationsstrom-Untersuchungen zum Einfluß von Wasser auf das dielektrische Spektrum von Polyamid 6 Y1 - 1994 ER - TY - JOUR A1 - Orgzall, Ingo A1 - Lorenz, Bernd T1 - Computer simulation of microstructures and geometric properties of a random system of penetrable disks : a model for compacted powders Y1 - 1994 ER - TY - JOUR A1 - Janietz, Silvia A1 - Schulz, Burkhard T1 - Electrochemical studies on thin films of poly(arylene-1,3,4-oxadiazole)s Y1 - 1994 ER - TY - JOUR A1 - Janietz, Dietmar A1 - Ahuja, Rajeev C. A1 - Möbius, Dietmar T1 - Monomeric and oligomeric discotic amphiphiles at the air : water interface Y1 - 1994 ER - TY - JOUR A1 - Knochenhauer, Gerald T1 - Thin organic layers : Langmuir-Blodgett films low dimensional quantum mechanics Y1 - 1994 ER - TY - JOUR A1 - Krägel, Jürgen A1 - Siegel, Stefan A1 - Miller, Reinhard T1 - Surface shear rheological studies of protein adsorption layers Y1 - 1994 ER - TY - JOUR A1 - Lorenz, Bernd A1 - Shen, Yuen R. A1 - Holzapfel, W. B. T1 - Characterization of the new luminescence pressure sensor SrFCl:Sm2+ Y1 - 1994 ER - TY - JOUR A1 - Lorenz, Bernd A1 - Orgzall, Ingo T1 - Optical absorption studies of sulfur at pressure up to 20 Gpa Y1 - 1994 ER - TY - JOUR A1 - Orgzall, Ingo A1 - Lorenz, H. A1 - Hinze, E. T1 - Formation of cubic BN in the system Mg3N2-BN : some pecularities Y1 - 1994 ER - TY - JOUR A1 - Orgzall, Ingo A1 - Lorenz, H. A1 - Hinze, E. T1 - Formation of the intermediate compound Mg3BN3 in the system Mg3N2-BN Y1 - 1994 ER - TY - JOUR A1 - Orgzall, Ingo A1 - Lorenz, Bernd T1 - Kinetics of photoinduced phase transitions in sulfur below 10 Gpa Y1 - 1994 ER - TY - JOUR A1 - Orgzall, Ingo A1 - Lorenz, H. A1 - Hinze, E. T1 - Observation of cBN formation in the system Mg3N2-BN Y1 - 1994 ER - TY - JOUR A1 - Orgzall, Ingo A1 - Lorenz, Bernd T1 - Structure and fractal properties in geological crystallization processes due to nucleation and growth Y1 - 1994 ER - TY - JOUR A1 - Schulz, Burkhard A1 - Janietz, Silvia T1 - Electrochemical studies on thin films of poly(arylene 1,3,4-oxadiazole)s Y1 - 1994 ER - TY - JOUR A1 - Schulz, Burkhard T1 - Eine neue Synthesevariante für aromatische Poly(1,3,4-oxadiazole) Y1 - 1994 ER - TY - JOUR A1 - Schulz, Burkhard T1 - Neue thermostabile Polyheterocyclen Y1 - 1994 ER - TY - JOUR A1 - Schulz, Burkhard T1 - New aspects of the solid-state structures and electrochemical properties of aromatic Poly(1,3,4- Oxadiazole)s Y1 - 1994 ER - TY - JOUR A1 - Schulz, Burkhard T1 - Struktur und Eigenschaften dünner Schichten aus aromatischen Poly(1,3,4- oxadiazol)en Y1 - 1994 ER - TY - JOUR A1 - Seeboth, A. A1 - Wüstneck, Rainer A1 - Krägel, Jürgen T1 - Gel dispersed liquid crystals Y1 - 1994 ER - TY - JOUR A1 - Wüstneck, Rainer A1 - Enders, P. A1 - Fiedler, H. T1 - Determination of aggregation numbers and ionisation degree of micelles using surface tension isotherms of maleic acid mono[(4-alkyl-piperazine-2-yl)ethyl esters] Y1 - 1994 ER - TY - THES A1 - Auraß, Henry T1 - Radiobeobachtungen der Sonnenkorona - ein Zugang zur Flarephysik : einige experimentelle Beiträge zum Verständnis der Dynamik des Flarerozesses Y1 - 1994 ER - TY - JOUR A1 - Baier, Frank W. T1 - Dominant galaxies in bimodal cluster Y1 - 1994 ER - TY - JOUR A1 - Baier, Frank W. A1 - Wipper, H. T1 - Luminosity distribution in cD clusters Y1 - 1994 ER - TY - JOUR A1 - Hubrig, Swetlana A1 - Mathys, Gautier T1 - The evolutionary state of magnetic Ap stars Y1 - 1994 ER - TY - JOUR A1 - Liperovsky, Viktor A. A1 - Meister, Claudia-Veronika T1 - Ionosphärische sporadische E-Schichten mittlerer Breiten als Stromgenerator Y1 - 1994 ER - TY - JOUR A1 - Meister, Claudia-Veronika T1 - Langevin equation for turbulent plasmas near regions of magnetic reconnection Y1 - 1994 ER - TY - JOUR A1 - Meister, Claudia-Veronika T1 - Stochastic forces in plasmas with magnetized particles Y1 - 1994 ER - TY - JOUR A1 - Meister, Claudia-Veronika T1 - Stromfluktuationen in kosmischen Plasmen mit Dichtegradienten Y1 - 1994 ER - TY - THES A1 - Schwarz, Udo T1 - Zeitreihenanalyse astrophysikalischer Aktivitätsphänomene Y1 - 1994 ER - TY - THES A1 - Atmanspacher, Harald T1 - Informationsdynamik : Grundlagen, Interpretation, Konsequenzen Y1 - 1994 ER - TY - JOUR A1 - Eichler, Hans Joachim A1 - Haase, Alfred A1 - Menzel, Ralf T1 - SBS-Phase Conjugation for Thermal Lens Compensation in 100 Watt Average Power Solid-State Lasers Y1 - 1994 ER - TY - JOUR A1 - Angelova, Angelina A1 - Reiche, Jürgen A1 - Ionov, Radoslav A1 - Janietz, Dietmar A1 - Lemmetyinen, Helge A1 - Brehmer, Ludwig T1 - Control of the structure of Langmuir-Blodgett films of a discotic liquid crystalline compound via the subphase composition and the adjacent molecular environment N2 - Changes of the molecular arrangenemt that can be induced by means of the LB technique in the multilayers of a disc-shaped multialkynyl amphiphile are monitored by means of small angle X-ray diffraction. Studies of the monolayers at the air-water interface reveal "edge-on" orientation of the discs. Specific effects of the counter- ions (Na+, Cd²+, Pb²+, and Ba²+) and sub-solution pH on the monolayer collapse pressure, transfer efficiency and molecular order in the multilayers are found. A correlation between the monolayer properties and the ability for formation of periodic discotic structures in the presence of divalent counterions is established. The discotic molecules retain their "edge-on" arrangement in the highly compressed transferred films with slight irregular interdigtation of the flexible wings and inclination to the substrate normal. The tilt and the inter- digitation are reduced when the discotic monolayers are deposited in alternating LB films with barium arachidate spacer layers. Y1 - 1994 ER - TY - THES A1 - Spahn, Frank T1 - Einfluß von Satelliten auf die Dynamik planetarer Ringe Y1 - 1994 ER - TY - JOUR A1 - Mikelskis, Helmut T1 - Inszenierung von Gelegenheiten des Naturverstehens : Konzeptionelle Betrachtungen zu einer empirischen Studie über ganzheitliches Lernen im Physikunterricht Y1 - 1994 ER - TY - BOOK A1 - Duit, Reinders A1 - Mikelskis, Helmut T1 - Physik, um die Welt zu begreifen : ein Lehrbuch für die Jahrgangsstufe 7/8 ; [Hauptbd.], Niedersachsen Y1 - 1994 SN - 3-425-03676-9 PB - Diesterweg; Konkordia-Verl. CY - Frankfurt am Main; Bühl ER - TY - JOUR A1 - Seehafer, Norbert T1 - Relaxation to equilibrium and inverse energy cascades in solar active regions Y1 - 1994 SN - 1-563-47099-3 SN - 0079-6050 ER - TY - JOUR A1 - Seehafer, Norbert T1 - Current helicity and the turbulent electromotive force Y1 - 1994 ER - TY - JOUR A1 - Seehafer, Norbert T1 - Alpha effect in the solar atmosphere Y1 - 1994 ER - TY - THES A1 - Pikovskij, Arkadij T1 - Dynamics of perturbations in chaotic dynamical systems Y1 - 1994 ER - TY - JOUR A1 - Regenstein, Wolfgang T1 - FTIR-Reflexionsspektroskopie dünner organischer Schichten auf Metalloberflächen Y1 - 1995 ER -