@misc{ReicheKratzHofmannetal.2011, author = {Reiche, J{\"u}rgen and Kratz, Karl and Hofmann, Dieter and Lendlein, Andreas}, title = {Current status of Langmuir monolayer degradation of polymeric biomaterials}, series = {The international journal of artificial organs}, volume = {34}, journal = {The international journal of artificial organs}, number = {2}, publisher = {Wichtig}, address = {Milano}, issn = {0391-3988}, doi = {10.5301/IJAO.2011.6401}, pages = {123 -- 128}, year = {2011}, abstract = {Langmuir monolayer degradation (LMD) experiments with polymers possessing outstanding biomedical application potential yield information regarding the kinetics of their hydrolytic or enzymatic chain scission under well-defined and adjustable degradation conditions. A brief review is given of LMD investigations, including the author's own work on 2-dimensional (2D) polymer systems, providing chain scission data, which are not disturbed by simultaneously occurring transport phenomena, such as water penetration into the sample or transport of scission fragments out of the sample. A knowledge-based approach for the description and simulation of polymer hydrolytic and enzymatic degradation based on a combination of fast LMD experiments and computer simulation of the water penetration is briefly introduced. Finally, the advantages and disadvantages of this approach are discussed.}, language = {en} } @article{ReicheBarberkaJanietzetal.1994, author = {Reiche, J{\"u}rgen and Barberka, Thomas Andreas and Janietz, Dietmar and Hofmann, Dieter and Pietsch, Ullrich and Brehmer, Ludwig}, title = {X-ray structure investigation and computer modelling of Langmuir-Blodgett films formed from disc-shaped pentaalkines}, year = {1994}, language = {en} } @article{JanietzHofmannReiche1994, author = {Janietz, Dietmar and Hofmann, Dieter and Reiche, J{\"u}rgen}, title = {Molecular organization of amphiphilic disc-shaped penta-alkynes in LB-mono- and multilayers}, year = {1994}, abstract = {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.}, language = {en} } @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{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} }