TY  - JOUR
A1  - Xie, Zai-Lai
A1  - Jelicic, Aleksandra
A1  - Wang, Feipeng
A1  - Rabu, Pierre
A1  - Friedrich, Alwin
A1  - Beuermann, Sabine
A1  - Taubert, Andreas
T1  - Transparent, flexible, and paramagnetic ionogels based on PMMA and the iron-based ionic liquid 1-butyl-3- methylimidazolium tetrachloroferrate(III) [Bmim][FeCl4]
N2  - The iron-containing ionic liquid (IL) 1-butyl-3-methylimidazolium tetrachloroferrate(III) [Bmim][FeCl4] has been used as a building block in the synthesis of transparent, ion-conducting, and paramagnetic ionogels. UV/Vis spectroscopy shows that the coordination around the Fe(III) ion does slightly change upon incorporation of the IL into PMMA. The thermal stability of the PMMA increases significantly with IL incorporation. In particular, the onset weight loss observed at ca. 265 degrees C for pure PMMA is completely suppressed. The ionic conductivity shows a strong temperature dependence and increases with increasing IL weight fractions. The magnetic properties are similar to those reported for the pure IL and are not affected by the incorporation into the PMMA matrix. The resulting ionogel is thus an interesting prototype for soft, flexible, and transparent materials combining the mechanical properties of the matrix with the functionality of the metal-containing IL, such as magnetism.
Y1  - 2010
UR  - http://www.rsc.org/Publishing/Journals/jm/index.asp
U6  - https://doi.org/10.1039/C0jm01733g
SN  - 0959-9428
ER  - 
TY  - JOUR
A1  - Schweizer, S.
A1  - Schuster, T.
A1  - Junginger, Matthias
A1  - Siekmeyer, Gerd
A1  - Taubert, Andreas
T1  - Surface modification of ickel/Titanium Alloy and Titanium Surfaces via a Polyelectrolyte Multilayer/Calcium Phosphate Hybrid Coating
N2  - The report shows that simple LbL deposition of positively charged chitosan and negatively charged heparin can be used to efficiently modify the native surface of both NiTi and Ti without any previous treatments. Moreover, mineralization of the polymer multilayers with calcium phosphate leads to surfaces with low contact angles around 70 and 20 degrees for NiTi and Ti, respectively. This suggests that a polymer multilayer/calcium phosphate hybrid coating could be useful for making NiTi or Ti implants that are at the same time antibacterial (via the chitosan), suppress blood clot formation (via the heparin), and favor fast endothelialization (via the improved surface hydrophilicity compared to the respective neat material).
Y1  - 2010
UR  - http://onlinelibrary.wiley.com/doi/10.1002/mame.200900347/pdf
U6  - https://doi.org/10.1002/mame.200900347
SN  - 1438-7492
ER  - 
TY  - JOUR
A1  - Ayi, Ayi A.
A1  - Khare, Varsha
A1  - Strauch, Peter
A1  - Girard, Jèrôme
A1  - Fromm, Katharina M.
A1  - Taubert, Andreas
T1  - On the chemical synthesis of titanium nanoparticles from ionic liquids
N2  - We report on attempts towards the synthesis of titanium nanoparticles using a wet chemical approach in imidazolium-based ionic liquids (ILs) under reducing conditions. Transmission electron microscopy finds nanoparticles in all cases. UV/Vis spectroscopy confirms the nanoparticulate nature of the precipitate, as in all cases an absorption band between ca. 280 and 300 nm is visible. IR spectroscopy shows that even after extensive washing and drying, some IL remains adsorbed on the nanoparticles. Raman spectroscopy suggests the formation of anatase nanoparticles, but X-ray diffraction reveals that, possibly, amorphous titania forms or that the nanoparticles are so small that a clear structure assignment is not possible. The report thus shows that (possibly amorphous) titanium oxides even form under reducing conditions and that the chemical synthesis of titanium nanoparticles in ILs remains elusive.
Y1  - 2010
UR  - http://www.springerlink.com/content/101572
U6  - https://doi.org/10.1007/s00706-010-0403-4
SN  - 0026-9247
ER  -