TY  - JOUR
A1  - Metzger, Robert M.
A1  - Chen, Bo
A1  - Höpfner, Ulf
A1  - Lakshmikantham, M. V.
A1  - Vuillaume, Dominique
A1  - Kawai, Tsuyoshi
A1  - Wu, Xiangli
A1  - Tachibana, Hiroaki
A1  - Hughes, Terry
A1  - Sakurai, Hiromi
A1  - Baldwin, Jeffrey W.
A1  - Hosch, Christina
A1  - Cava, Michael P.
A1  - Brehmer, Ludwig
A1  - Ashwell, Geoffrey J.
T1  - Unimolecular electrical rectification in Hexadecylquinolinium Tricyanoquinodimethanide
Y1  - 1997
ER  - 
TY  - JOUR
A1  - Zhu, Shigen
A1  - Schulz, Burkhard
A1  - Bruma, Maria
A1  - Brehmer, Ludwig
T1  - Comparative study of the thermal properties of related aromatic polyhydrazides and poly(1,3,4-oxadiazole)s
Y1  - 1996
UR  - http://www3.interscience.wiley.com/journal/5401/home?CRETRY=1&SRETRY=0
U6  - https://doi.org/10.1002/(SICI)1099-1581(199612)7:12<879::AID-PAT600>3.0.CO;2-X
SN  - 1042-7147
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  - 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  - 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  - 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  - 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  - Grasnick, G.
A1  - Herkner, G.
A1  - Katholy, Stefan
A1  - Brehmer, Ludwig
T1  - Pyroelektrisches Dünnschichtelement
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  - 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  - 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  - JOUR
A1  - Brehmer, Ludwig
T1  - Dünne organische Schichten : Anforderungen und Möglichkeiten für die Sensorik
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  - Dietzel, Birgit
A1  - Freydank, A.
A1  - Reiche, Jürgen
A1  - Brehmer, Ludwig
A1  - Knoblauch, H.
A1  - Knochenhauer, Gerald
A1  - Zetzsche, Thomas
T1  - Mono- und Multischichten von neuen aromatischen 1,3,4-Oxadiazolen
Y1  - 1995
ER  - 
TY  - JOUR
A1  - Penacorada, Florencio
A1  - Dietel, Reinhard
A1  - Reiche, Jürgen
A1  - Zetzsche, Thomas
A1  - Knobloch, Harald
A1  - Katholy, Stefan
A1  - Brehmer, Ludwig
T1  - Studium des Einflusses von Uranyl-Gegenionen auf die Struktur von Langmuir- und Langmuir-Blodgett Filmen der Arachinsäure
Y1  - 1995
ER  - 
TY  - JOUR
A1  - Bauer, J.
A1  - Schulz, Burkhard
A1  - Brehmer, Ludwig
A1  - Bötcher, M.
A1  - Jagdhold, U.
A1  - Höppner, K.
A1  - Kulesch, A.
A1  - Dietzel, Birgit
T1  - Anwendung von Langmuir-Blodgett-Schichten als Resist für die Niederspannungs-Elektronenstrahl-Lithografie
Y1  - 1995
ER  - 
TY  - JOUR
A1  - Helms, Andreas
A1  - Reiche, Jürgen
A1  - Stiller, Burkhard
A1  - Kobloch, H.
A1  - Brehmer, Ludwig
T1  - Herstellung dünner organischer Schichten durch Vakuumdeposition
Y1  - 1995
ER  - 
TY  - JOUR
A1  - Frübing, Peter
A1  - Grasnick, G.
A1  - Herkner, G.
A1  - Janietz, Dietmar
A1  - Brehmer, Ludwig
T1  - Pyroelektrische Untersuchungen an Polyvinylalkoholen mit Azobenzen / Alkoxy - Seitenketten
Y1  - 1995
ER  - 
TY  - JOUR
A1  - Knochenhauer, Gerald
A1  - Reiche, Jürgen
A1  - Barberka, Thomas Andreas
A1  - Woolley, Martin
A1  - Tredgold, Richard H.
A1  - Hodge, P.
A1  - Brehmer, Ludwig
T1  - Do perfluorianted chains always have to be twisted?
N2  - Short perfluorinated cabon chains do not take on helical structure when they are closely packed
Y1  - 1995
ER  - 
TY  - JOUR
A1  - Reiche, Jürgen
A1  - Knochenhauer, Gerald
A1  - Barberka, Thomas Andreas
A1  - Geue, Thomas
A1  - Pietsch, Ullrich
A1  - Brehmer, Ludwig
A1  - Hodge, P.
A1  - Tredgold, Richard H.
T1  - In-plane structure of perfluorotetra decanoic acid Langmuir-Blodgett films and films formed by vacuum deposition
Y1  - 1995
ER  - 
TY  - JOUR
A1  - Yusupov, R. G.
A1  - Frübing, Peter
A1  - Brehmer, Ludwig
A1  - Mislavski, B. V.
T1  - Langmuir Filme des Polymers "NAFION" als sensibles Element eines Feuchtesensors
Y1  - 1995
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  - 1995
ER  - 
TY  - JOUR
A1  - Schulz, Burkhard
A1  - Brehmer, Ludwig
A1  - Dietzel, Birgit
A1  - Zetzsche, Thomas
T1  - Preparation and characterization of ordered thin films based on aromatic poly(1,3,4-oxadiazole)s
Y1  - 1995
ER  - 
TY  - JOUR
A1  - Reiche, Jürgen
A1  - Penacorada, Florencio
A1  - Zetzsche, Thomas
A1  - Katholy, Stefan
A1  - Brehmer, Ludwig
T1  - Polyelektrolyt-Fettsäure-Multiphasen-LB-Schichten
Y1  - 1995
ER  - 
TY  - JOUR
A1  - Reiche, Jürgen
A1  - Dietzel, Birgit
A1  - Freydank, Anke-Christine
A1  - Geue, Thomas
A1  - Pietsch, Ullrich
A1  - Brehmer, Ludwig
T1  - Lateral structure of thermally treated oxadiazole Langmuir-Blodgett films
Y1  - 1995
ER  - 
TY  - JOUR
A1  - Schulz, Burkhard
A1  - Stiller, Burkhard
A1  - Zetzsche, Thomas
A1  - Knochenhauer, Gerald
A1  - Dietel, Reinhard
A1  - Brehmer, Ludwig
T1  - Characterization of 2,5-di(p-tolyl-1,3,4- oxadiazole) crystals by IR-spectroscopy and atomic force microscopy
Y1  - 1995
ER  - 
TY  - JOUR
A1  - Penacorada, Florencio
A1  - Yusupov, R. G.
A1  - Milaski, B.
A1  - Frübing, Peter
A1  - Brehmer, Ludwig
T1  - Elektrische Eigenschaften von polyionischen LB-Filmen
Y1  - 1995
ER  - 
TY  - JOUR
A1  - Knobloch, Harald
A1  - Woigk, S.
A1  - Brehmer, Ludwig
A1  - Yusupov, R. G.
A1  - Rakhnyanskaya, A.
T1  - Metalion adsorption to Langmuir-Blodgett films monitored by the optical waveguide technique
Y1  - 1995
ER  - 
TY  - JOUR
A1  - Brehmer, Ludwig
A1  - Liemant, Alfred
A1  - Müller, I.
A1  - Albrecht, Fred
T1  - Stochastic model for charge carrier transport in disordered solids
Y1  - 1995
ER  - 
TY  - JOUR
A1  - Brehmer, Ludwig
A1  - Frübing, Peter
A1  - Herkner, G.
A1  - Kaminorz, Yvette
T1  - Pyroelektrische Untersuchungen an dünnen Schichten von organischen Seitenkettenpolymeren
Y1  - 1995
ER  - 
TY  - JOUR
A1  - Brehmer, Ludwig
A1  - Grasnick, G.
A1  - Herkner, G.
A1  - Kaminorz, Yvette
T1  - Organic thin film pyrosensors
Y1  - 1995
ER  - 
TY  - JOUR
A1  - Brehmer, Ludwig
A1  - Dietzel, Birgit
A1  - Freydank, Anke-Christine
A1  - Katholy, Stefan
A1  - Knochenhauer, Gerald
A1  - Reiche, Jürgen
A1  - Schulz, Burkhard
A1  - Zetzsche, Thomas
T1  - Langmuir- und Langmuir-Blodgett-Filme amphiphiler Oxadiazole
Y1  - 1995
ER  - 
TY  - JOUR
A1  - Reiche, Jürgen
A1  - Penacorada, Florencio
A1  - Geue, Thomas
A1  - Pietsch, Ullrich
A1  - Brehmer, Ludwig
T1  - In-plane structure of uranylarachidate multilayers
Y1  - 1995
ER  - 
TY  - JOUR
A1  - Reiche, Jürgen
A1  - Freydank, A.
A1  - Dietzel, Birgit
A1  - Katholy, Stefan
A1  - Knochenhauer, Gerald
A1  - Zetzsche, Thomas
A1  - Schulz, Burkhard
A1  - Brehmer, Ludwig
T1  - Komplexe Strukturanalytik von Oxadiazol-Mono- und Multischichten
Y1  - 1995
ER  - 
TY  - JOUR
A1  - Penacorada, Florencio
A1  - Reiche, Jürgen
A1  - Katholy, Stefan
A1  - Brehmer, Ludwig
A1  - Rodriguez-Mendez, Maria-Luisa
T1  - Monolayers and multilayers of uranyl arachidate : 1. study of the interaction of dissolved uranyl ions with arachidic acid Langmuir monolayers
N2  - Langmuir monolayers of arachidic acid have been prepared on a subphase containing uranyl ions (O-U-O)ý+. The interaction between the uranyl ions and the monolayer of arachidic acid has been studied by means of surface pressure and surface potential isotherms and Brewster angle microscopy at different pH values (ranging from 1.5 to 8). A similar systematic study has been carried out in the presence of Cdý+ ions for comparison purposes. The surface pressure and surface potential isotherms demonstrate that the acid to salt conversion of arachidic acid in the presence of uranyl ions occurs at lower bulk pH values (pH=3.5) as compared with other bivalent metal counterions such as Cdý+. Changes in the surface morphology of the monolayer induced by the interaction with uranyl- and cadmium ions are analyzed and the correlation between the surface potential change and the morphology of the films is discussed.
Y1  - 1995
ER  - 
TY  - JOUR
A1  - Reiche, Jürgen
A1  - Janietz, Dietmar
A1  - Barberka, Thomas Andreas
A1  - Hofmann, Dieter
A1  - Brehmer, Ludwig
T1  - Comprehensive structure investigation of Langmuir-Blodgett films of disc-shaped molecules
N2  - The structure of mono- and multilayers of amphiphilic disc-shaped pentaynes wa inbestigated by Brewsterangle microscopy, X-ray specular reflection and grazing incidence diffraction (GID). X-ray specular reflection experiments confirm the "edge on" arrangement of the molecular discs. The molecular modelling of the Langmuir-Blodgett (LB)- multilayers predicts a columnar in-plane packing of the molecules. A GID experiment with monochromatic synchrotron radiation was used to verify the predicted multilayer structure on molecular level, while the Brewsterangle microscopy gave a deeper insight in the monolayer in-plane structure on micron scale.
Y1  - 1995
ER  - 
TY  - JOUR
A1  - Penacorada, Florencio
A1  - Angelova, Angelina
A1  - Kamusewitz, Helmut
A1  - Reiche, Jürgen
A1  - Brehmer, Ludwig
T1  - Scanning Force Microscopy and Wetting study of the Surface Modification of a Polypropylene Mambrane by Means of Langmuir-Blodgett Film Deposition
N2  - Polypropylene membranes with deposited ultrathin "siin" layers are attractive for separation and cleaning of gaseous mixtures. In the present study, the surface morphology and wetting hysteresis of composite membranes consisting of a microporous polypropylene support and Langmuir-Blodgett ("skin") films, are investigated. The effect of the interlayer molecular interactions and the substrate features on the integrity and homogeneity of the "skin" layers is examined. Langmuir-Blodgett films of arachidic acid and cadmium and calcium arachidate are characterized both on smooth silicon and on porous polypropylene supports. Contact angle measurements and scanning force microscopy (SFM) are applied for investigations of the membrane surface modification upon transfer of a different number of monolayers. It was found that the contact angle hysteresis of the bare membrane decreases after the LB-deposition of close-packed monolayers. Smoothing of the membrane surface is also evidenced by the SFM images, on different length scales, confirming a good coverage of the membrane pores.
Y1  - 1995
ER  - 
TY  - JOUR
A1  - Reiche, Jürgen
A1  - Kamusewitz, Helmut
A1  - Keller, Manuela
A1  - Brehmer, Ludwig
A1  - Peñacorada, Florencio
T1  - Study of gas transport through composite membranes with a stabilised Langmuir-Blodgett skin layer
N2  - The Langmuir-Blodgett (LB-) technique is used to deposit molecular reinforced separation layers on porous polymer substrates resulting in composite membranes for gas separation. The adsorption of a polycation to the arachidic acid Langmuir layer and the subsequent transfer of the highly ordered and stabilised monolayer onto a polypropylene membrane (Cellgard 2400) yields a laminated separation layer combining the advantageous high degree of order of fatty acid films and the stability of thin polymeric films. X-ray reflectivity data of these films confirm the transfer of the assembled polymer layer together with the fatty acid monolayer and the formation of ordered Y-type LB-films. SFM pictures show a dense film without pinholes completely covering the porous support. Gas permeation measurements are used to study the transport process of different gases through the composite membrane.
Y1  - 1995
ER  - 
TY  - JOUR
A1  - Schulz, Burkhard
A1  - Brehmer, Ludwig
A1  - Knochenhauer, Gerald
T1  - Supramolecular structures of aromatic 1,3,4-oxadiazole solids
Y1  - 1995
ER  - 
TY  - JOUR
A1  - Schulz, Burkhard
A1  - Brehmer, Ludwig
T1  - Preparation and characterization of ordered thin films based on aromatic poly(1,3,4-oxadiazole)s
Y1  - 1995
ER  - 
TY  - JOUR
A1  - Reiche, Jürgen
A1  - Brehmer, Ludwig
T1  - Einfluss des Transferverhältnisses auf die Monoschichtsymmetrie in Y-Typ Langmuir-Blodgett-Schichten
Y1  - 1995
ER  - 
TY  - JOUR
A1  - Katholy, Stefan
A1  - Reiche, Jürgen
A1  - Brehmer, Ludwig
T1  - Strukturuntersuchungen an Langmuir-Monoschichten organischer Amphiphile mittels Brewsterwinkelmikroskopie
Y1  - 1995
ER  - 
TY  - JOUR
A1  - Dietel, Reinhard
A1  - Penacorada, Florencio
A1  - Brehmer, Ludwig
T1  - Structural variations in Langmuir-Blodgett layers of arachidic acid studied by FTIR-reflection absorption spectroscopy
Y1  - 1995
ER  - 
TY  - JOUR
A1  - Knobloch, Harald
A1  - Katholy, Stefan
A1  - Orendi, H.
A1  - Hesse, J.
A1  - Ruhmann, Ralf
A1  - Prescher, Dietrich
A1  - Brehmer, Ludwig
T1  - Ellipsometric studies on photochromic ultra thin polymer films
Y1  - 1996
ER  - 
TY  - JOUR
A1  - Knobloch, Harald
A1  - Szada-Borryszkowski, Gunther v.
A1  - Woigk, S.
A1  - Helms, Andreas
A1  - Brehmer, Ludwig
T1  - Dispersive surface plasmon microscopy for the characterization of ultra thin organic films
Y1  - 1996
ER  - 
TY  - JOUR
A1  - Brehmer, Ludwig
A1  - Kaminorz, Yvette
A1  - Grasnick, G.
A1  - Herkner, G.
T1  - Organic thin film pyrosensors
Y1  - 1996
ER  - 
TY  - JOUR
A1  - Penacorada, Florencio
A1  - Reiche, Jürgen
A1  - Dietel, Reinhard
A1  - Zetzsche, Thomas
A1  - Stiller, Burkhard
A1  - Knobloch, Harald
A1  - Brehmer, Ludwig
T1  - Monolayers and multilayers of uranyl arachidate : 2. Influence of the subphase pH on the structure and stability of Langmuir-Blodgett films
N2  - In this second paper we describe the comprehensive structure investigations on multilayers of uranyl arachidate formed by Langmuir-Blodgett deposition from subphases of different pH on solid substrates by means of a combination of infrared spectroscopy, X-ray specular reflection, ellipsometry, and scanning force microscopy, The structure of these multilayers and their stability are obviously influenced by the subphase pH. The pH range of the acid to salt conversion determined for the Langmuir films is confirmed by the infrared spectroscopic data of the multilayers. While arachidic acid films, deposited from an uranyl acetate subphase of low pH, are found to have strongly distorted rough surface, the films of uranyl structure, The influence of the counterions on the alkyl chain conformation, chain packing, reorganization probability, and stability of the multilayer is discussed.
Y1  - 1996
ER  - 
TY  - JOUR
A1  - Liemant, Alfred
A1  - Brehmer, Ludwig
T1  - A mean field approximation for hopping transport in disordered materials
Y1  - 1996
ER  - 
TY  - JOUR
A1  - Brehmer, Ludwig
T1  - Ellipsometrie an photochromen ultradünnen Polymerschichten
Y1  - 1996
ER  - 
TY  - JOUR
A1  - Höpfner, Ulf
A1  - Frübing, Peter
A1  - Neumann, Werner
A1  - Kaminorz, Yvette
A1  - Brehmer, Ludwig
T1  - Polarization Processes of poly(DMDAAC) films studied by TSD current
Y1  - 1996
ER  -