@article{ReicheKamusewitzKelleretal.1995, author = {Reiche, J{\"u}rgen and Kamusewitz, Helmut and Keller, Manuela and Brehmer, Ludwig and Pe{\~n}acorada, Florencio}, title = {Study of gas transport through composite membranes with a stabilised Langmuir-Blodgett skin layer}, year = {1995}, abstract = {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.}, language = {en} } @article{PenacoradaDietelReicheetal.1995, author = {Penacorada, Florencio and Dietel, Reinhard and Reiche, J{\"u}rgen and Zetzsche, Thomas and Knobloch, Harald and Katholy, Stefan and Brehmer, Ludwig}, title = {Studium des Einflusses von Uranyl-Gegenionen auf die Struktur von Langmuir- und Langmuir-Blodgett Filmen der Arachins{\"a}ure}, year = {1995}, language = {de} } @article{KatholyReicheBrehmer1995, author = {Katholy, Stefan and Reiche, J{\"u}rgen and Brehmer, Ludwig}, title = {Strukturuntersuchungen an Langmuir-Monoschichten organischer Amphiphile mittels Brewsterwinkelmikroskopie}, year = {1995}, language = {de} } @article{PenacoradaAngelovaKamusewitzetal.1995, author = {Penacorada, Florencio and Angelova, Angelina and Kamusewitz, Helmut and Reiche, J{\"u}rgen and Brehmer, Ludwig}, title = {Scanning Force Microscopy and Wetting study of the Surface Modification of a Polypropylene Mambrane by Means of Langmuir-Blodgett Film Deposition}, year = {1995}, abstract = {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.}, language = {en} } @article{JanietzHofmannReiche1995, author = {Janietz, Dietmar and Hofmann, Dieter and Reiche, J{\"u}rgen}, title = {Reply to comment on "Molecular organization of amphiphilic disc-shaped penta-alkynes in LB mono- and multilayers"}, year = {1995}, abstract = {The model for the Langmuir-Blodgett (LB) film structure of amphiphilic disc-shaped penta-alkynes is refined. It is shown that LB experiments reported in a comment on one of our papers do not contradict the molecular organization within the LB films of the penta-alkynes we proposed.}, language = {en} } @article{ReichePenacoradaZetzscheetal.1995, author = {Reiche, J{\"u}rgen and Penacorada, Florencio and Zetzsche, Thomas and Katholy, Stefan and Brehmer, Ludwig}, title = {Polyelektrolyt-Fetts{\"a}ure-Multiphasen-LB-Schichten}, year = {1995}, language = {de} } @article{JutilaJanietzReicheetal.1995, author = {Jutila, Arimati and Janietz, Dietmar and Reiche, J{\"u}rgen and Lemmetyinen, Helge}, title = {Photophysical investigation of Langmuir-Blodgett films of amphiphilic discotic penta-alkynes}, year = {1995}, abstract = {Amphiphilic discotic pentakis (arylethynyl) benzene compounds 1 and 2 containing an enlarged aromatic core functioning as a chromophoric p-electron system were studied with regard to their photophysical properties within Langmuir-Blodgett (LB) films. The results obtained from steady-state absorption as well as fluorescence excitation and emission measurements will be discussed with regard to interchromophoric interactions in the LB films. Time-resolved fluorescence inves6igations revealed the formation of a ground-state complex as well as excimer formation. Thermal treatment causes irreversible destruction of the LB film structure of the discotic amphiphiles. Within droplets the reorganization of the original nematic-discotic (ND) mesophase of the bulk materials was found for the alcohol 2 as indicated by a Maltese Cross texture, whereas the acid 1 remained isotopic.}, language = {en} } @article{EnglischPietschReicheetal.1995, author = {Englisch, Uwe and Pietsch, Ullrich and Reiche, J{\"u}rgen and Dietzel, Birgit}, title = {Neutronenreflektivit{\"a}t von teildeuterierten LB-Filmen mit verschiedenen Verh{\"a}ltnissen on protonierten zu deuterierten Schichten}, year = {1995}, language = {de} } @article{EnglischBarberkaPietschetal.1995, author = {Englisch, Uwe and Barberka, Thomas Andreas and Pietsch, Ullrich and H{\"o}hne, U. and Reiche, J{\"u}rgen and Dietzel, Birgit}, title = {Neutronenreflektivit{\"a}t an Langmuir-Blodgett-Strukturen}, year = {1995}, language = {de} } @article{PenacoradaReicheKatholyetal.1995, author = {Penacorada, Florencio and Reiche, J{\"u}rgen and Katholy, Stefan and Brehmer, Ludwig and Rodriguez-Mendez, Maria-Luisa}, title = {Monolayers and multilayers of uranyl arachidate : 1. study of the interaction of dissolved uranyl ions with arachidic acid Langmuir monolayers}, year = {1995}, abstract = {Langmuir monolayers of arachidic acid have been prepared on a subphase containing uranyl ions (O-U-O){\´y}+. 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 Cd{\´y}+ 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 Cd{\´y}+. 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.}, language = {en} } @article{DietzelFreydankReicheetal.1995, author = {Dietzel, Birgit and Freydank, A. and Reiche, J{\"u}rgen and Brehmer, Ludwig and Knoblauch, H. and Knochenhauer, Gerald and Zetzsche, Thomas}, title = {Mono- und Multischichten von neuen aromatischen 1,3,4-Oxadiazolen}, year = {1995}, language = {de} } @article{Reiche1995, author = {Reiche, J{\"u}rgen}, title = {Mono- und Multischichten aus Polyelektrolyt-Carbons{\"a}ure-Komplexen}, year = {1995}, language = {de} } @article{ReicheDietzelFreydanketal.1995, author = {Reiche, J{\"u}rgen and Dietzel, Birgit and Freydank, Anke-Christine and Geue, Thomas and Pietsch, Ullrich and Brehmer, Ludwig}, title = {Lateral structure of thermally treated oxadiazole Langmuir-Blodgett films}, year = {1995}, language = {en} } @article{BrehmerDietzelFreydanketal.1995, author = {Brehmer, Ludwig and Dietzel, Birgit and Freydank, Anke-Christine and Katholy, Stefan and Knochenhauer, Gerald and Reiche, J{\"u}rgen and Schulz, Burkhard and Zetzsche, Thomas}, title = {Langmuir- und Langmuir-Blodgett-Filme amphiphiler Oxadiazole}, year = {1995}, language = {de} } @article{ReicheFreydankDietzeletal.1995, author = {Reiche, J{\"u}rgen and Freydank, A. and Dietzel, Birgit and Katholy, Stefan and Knochenhauer, Gerald and Zetzsche, Thomas and Schulz, Burkhard and Brehmer, Ludwig}, title = {Komplexe Strukturanalytik von Oxadiazol-Mono- und Multischichten}, year = {1995}, language = {de} } @article{ReichePenacoradaGeueetal.1995, author = {Reiche, J{\"u}rgen and Penacorada, Florencio and Geue, Thomas and Pietsch, Ullrich and Brehmer, Ludwig}, title = {In-plane structure of uranylarachidate multilayers}, year = {1995}, language = {en} } @article{ReicheKnochenhauerBarberkaetal.1995, author = {Reiche, J{\"u}rgen and Knochenhauer, Gerald and Barberka, Thomas Andreas and Geue, Thomas and Pietsch, Ullrich and Brehmer, Ludwig and Hodge, P. and Tredgold, Richard H.}, title = {In-plane structure of perfluorotetra decanoic acid Langmuir-Blodgett films and films formed by vacuum deposition}, year = {1995}, language = {en} } @article{ReicheKatholy1995, author = {Reiche, J{\"u}rgen and Katholy, Stefan}, title = {Herstellung und Strukturaufkl{\"a}rung d{\"u}nner organischer Schichten}, year = {1995}, language = {de} } @article{HelmsReicheStilleretal.1995, author = {Helms, Andreas and Reiche, J{\"u}rgen and Stiller, Burkhard and Kobloch, H. and Brehmer, Ludwig}, title = {Herstellung d{\"u}nner organischer Schichten durch Vakuumdeposition}, year = {1995}, language = {de} } @article{ReicheBrehmer1995, author = {Reiche, J{\"u}rgen and Brehmer, Ludwig}, title = {Einfluss des Transferverh{\"a}ltnisses auf die Monoschichtsymmetrie in Y-Typ Langmuir-Blodgett-Schichten}, year = {1995}, language = {de} } @article{KnochenhauerReicheBarberkaetal.1995, author = {Knochenhauer, Gerald and Reiche, J{\"u}rgen and Barberka, Thomas Andreas and Woolley, Martin and Tredgold, Richard H. and Hodge, P. and Brehmer, Ludwig}, title = {Do perfluorianted chains always have to be twisted?}, year = {1995}, abstract = {Short perfluorinated cabon chains do not take on helical structure when they are closely packed}, language = {en} } @article{KatholyReicheDietzeletal.1995, author = {Katholy, Stefan and Reiche, J{\"u}rgen and Dietzel, Birgit and Ruhmann, Ralf and Prescher, Dietrich}, title = {Copolymerer funktionalisierte Methacrylate}, year = {1995}, language = {de} } @article{ReicheJanietzBarberkaetal.1995, author = {Reiche, J{\"u}rgen and Janietz, Dietmar and Barberka, Thomas Andreas and Hofmann, Dieter and Brehmer, Ludwig}, title = {Comprehensive structure investigation of Langmuir-Blodgett films of disc-shaped molecules}, year = {1995}, abstract = {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.}, language = {en} } @article{Reiche1995, author = {Reiche, J{\"u}rgen}, title = {Antiphasen domains in Langmuir-Blodgett films}, year = {1995}, language = {en} } @article{Reiche1995, author = {Reiche, J{\"u}rgen}, title = {Antiphasen : Dom{\"a}nen in Langmuir-Blodgett Schichten}, year = {1995}, language = {de} }