TY  - JOUR
A1  - Reiche, Jürgen
A1  - Knochenhauer, Gerald
A1  - Dietel, Reinhard
A1  - Freydank, Anke-Christine
A1  - Zetzsche, Thomas
A1  - Pietsch, Ullrich
A1  - Brehmer, Ludwig
A1  - Barberka, Thomas Andreas
A1  - Geue, Thomas
T1  - Structure of thermally treated oxadiazoleamide Langmuir-Blodgett films
N2  - The thermal treatment of Y-type Langmuir-Blodgett (LB) films formed from the amphiphilic derivative of 2,5- diphenyl-1,3,4-oxadiazole 1 results in changes of the molecular packing. These changes have been analysed by a combination of X-ray specular reflectivity data, X-ray grazing incidence diffraction data and scanning force microscopy images, On the basis of these experimental data we have simulated possible supramolecular structures, These simulations provide insight into the intermolecular interactions giving rise to the observed structural transitions. The crystalline structure induced by thermal treatment of the LB films is characterized by a uniaxial texture, which is correlated with the dipping direction during deposition of the LB film.
Y1  - 1997
ER  - 
TY  - JOUR
A1  - Reiche, Jürgen
A1  - Schulz, Burkhard
A1  - Knochenhauer, Gerald
A1  - Dietzel, Birgit
A1  - Freydank, Anke-Christine
A1  - Zetzsche, Thomas
A1  - Brehmer, Ludwig
T1  - Supramolecular structures formed from heterocyclic aromatic molecules
N2  - This paper describes the formation and structure investigation of Langmuir monolayers and Langmuir-Blodgett multilayers formed from amphiphilic derivatives of 2,5-diphenyl-1,3,4-oxadiazole. The 2,5-diphenyl-1,3,4-oxadiazole group as a functional unit with interesting physical and chemical properties is maintained, while the head group, the length of the alkyl chain and the structure of the coupling unit between aromatic and aliphatic part of these linear short-chain amphiphiles is systematically varied in order to explore the influence of this change on the film forming properties and the stability of Langmuir and Langmuir-Blodgett films. Molecular mechanics simulations are shown by these systematic variations to be suitable for the prediction of optimal chemical structures allowing for a stable stratified molecular packing. The combination of a detailed structure investigation of the multilayers based on scanning force microscopy and X-ray data with molecular mechanics simulations yields an insight into the packing of the molecules and the intermolecular interactions.
Y1  - 1997
ER  - 
TY  - THES
A1  - Freydank, Anke-Christine
T1  - Synthese neuer amphiphiler aromatischer 1,3,4-Oxadiazole und ihre Anwendung zum Aufbau supramolekularer Architekturen
Y1  - 1997
CY  - Potsdam
ER  - 
TY  - JOUR
A1  - Reiche, Jürgen
A1  - Zetzsche, Thomas
A1  - Helms, Andreas
A1  - Freydank, Anke-Christine
A1  - Knochenhauer, Gerald
A1  - Schulz, Burkhard
A1  - Brehmer, Ludwig
T1  - Organized molecular films of oxadiazole compounds formed by vacuum deposition
Y1  - 1997
ER  -